Board of Directors, Physician Group
Paul Merrick, MD, Chairman of the Board, DMG Physician Organization
Dr. Paul Merrick, a board-certified and renowned urologist, serves as the Chairman of the Board and CEO of the DMG Physician organization, the largest independent, multi-specialty group in Illinois.
In his role, Dr. Merrick leads the Board and physicians in their goal of making healthcare better for patients and communities by offering high-quality and compassionate care. He ensures that DMG’s physician-driven approach continues to lead to exceptional physician engagement and improved patient outcomes.
As a leader critical to the organization’s success, Dr. Merrick has played an important role in DMG’s growth during the last decade.
Understanding the importance of giving back, Dr. Merrick also helped establish the organization’s charitable foundation, the DMG Charitable Fund, which supports and grants funding to more than 30 Chicagoland nonprofit organizations that provide access to food, affordable housing and healthcare/wellness services to those in need.
He has been in practice since 1994, was a founding physician when DMG started in 1999 and has been leading the physician organization since 2009. He previously served as chairman of the Urology department for 13 years; he also served as Treasurer and remains a member of the Board of Directors.
Dr. Merrick earned his medical degree from Rush Medical College and completed his residency at Rush University Medical Center, where he served as chief resident of urology.
John Porcelli, MD, President
Dr. John Porcelli, board-certified in critical care, pulmonary medicine and sleep medicine, serves as President of DuPage Medical Group (DMG).
He works closely with the DMG leadership team to direct and improve all aspects of patient care, ensure continuous physician engagement and drive growth initiatives for the organization.
In his leadership role, Dr. Porcelli upholds humility, passion and commitment while he leads physicians in problem-solving and developing solutions for achieving higher quality, lower cost outpatient care. He also works to assure physicians have influence and opportunity in how they practice medicine.
In practice at DMG since 2004 and appointed president in 2019, he previously served as treasurer and member of the DMG Board of Directors, chairman of DMG’s critical care, pulmonary medicine and sleep medicine department, medical director of an intensive care unit at a local hospital and leader at several internal and external committees. As a full-time practicing physician, he brings extensive experience in treating lung cancer, COPD, acute lung injury, adult asthma, sleep disorders and sepsis.
Dr. Porcelli is passionate about healthcare because he finds the teamwork approach between physicians and patients gratifying.
He earned his undergraduate degree from the University of Notre Dame and his medical degree from Rush Medical College. He completed his residency in internal medicine at Rush University Medical Center and later completed fellowship training in critical care, pulmonary medicine and sleep medicine at Loyola University Medical Center, where he also served as chief fellow.
Dr. Porcelli enjoys spending time with his wife and six children and attending sporting events. Within the community, he actively participates in fundraising opportunities, volunteers with local charities and mentors college students who are interested in pursuing medical professions. The most rewarding accomplishment of Dr. Porcelli’s career thus far has been having the opportunity to serve patients as a DMG physician.
- DMG Physician of the Year in 2017
- DMG Specialist of the Year in 2010
Michael Fitzgerald, MD, Secretary
Dr. Michael Fitzgerald, a board-certified physician in Family Practice, serves as secretary of DuPage Medical Group (DMG). In his leadership role, he upholds integrity, commitment and accountability when empowering others. He also demonstrates humility, active listening and diplomacy.
Dr. Michael Fitzgerald is an experienced family medicine physician whose expertise includes diabetes, asthma, sports medicine and acute care issues. Dr. Fitzgerald focuses on teaching families, including children and the elderly, how to stay healthy, active, and injury-free. He has instructed medical students in a variety of settings, including family practice clinics, intensive care units and pediatric and obstetric wards.
He has been practicing at DMG since 2001 and is also a member of the American Academy of Family Practice, the Illinois Academy of Family Physicians and the American Medical Association.
He is passionate about healthcare because he treasures having the opportunity to make a positive impact on patients every day.
Dr. Fitzgerald earned his medical degree in 1998 from Loyola University Stritch School of Medicine in Maywood, Ill., and completed his residency at MacNeal Family Practice in Berwyn, Ill. He is affiliated with Edward Hospital.
In Dr. Fitzgerald’s free time, he enjoys traveling with family and friends and creating memorable experiences along the way. Within the community, he has instructed medical and nurse practitioner students during their clinical rotations through his clinic. The most rewarding accomplishment of his career thus far has been having the privilege to work with patients from all walks of life. He has gained great satisfaction from this experience and has enjoyed caring for patients throughout their different stages.
- Named one of Chicago Magazine’s ‘Top Doctors’ in 2018
- Recognized in West Suburban Living Magazine in 2014 and 2017
Jean Houlihan, MD, Vice President
Dr. Jean Houlihan, board-certified in internal medicine, serves as vice president of DuPage Medical Group (DMG). In her leadership role, Dr. Houlihan upholds active listening, effective communication and open-mindedness. Using these qualities, she works to “see the big picture” and evaluate all sides of an issue when working toward a solution.
As a physician, Dr. Houlihan strives to partner with her patients, helping them manage a healthy lifestyle. Her clinical interests include women’s health, preventive care, cardiac health and cholesterol management.
She has been practicing in DuPage County since 1995 and has served on DMG’s leadership team since 2015. Dr. Houlihan is passionate about healthcare because it allows her to actively educate and engage patients while striving to provide accessible care for all.
Dr. Houlihan received her degree from Rush Medical College in Chicago. At Rush Medical College, she was awarded the Ramsey/Ramsey Scholarship for Academic Excellence in Leadership Qualities. She also received a Janet M. Glasgow Memorial Award of the American Women’s Association for graduating first in her class as a female student and a Nathan M. Freer Prize for being voted by faculty as an outstanding senior medical student. While completing her internship and residency at Rush Presbyterian-St. Luke’s Medical Center in Chicago, she received a Robert E. Slayton Prize for Special Competence, Sensitivity and Compassion in Medical Oncology and a Department of Internal Medicine Award for Excellent Work as a Resident. Furthermore, Dr. Houlihan is a member of the Alpha Omega Alpha Medical Honor Society.
Dr. Houlihan enjoys bonding with her large, close family in addition to biking, hiking, skiing, playing golf, traveling and practicing yoga. She also loves animals. Within the community, she volunteers on the DMG Charitable Fund advisory board. The most rewarding accomplishments of Dr. Houlihan’s career thus far have been taking care of her wonderful patients and being part of DMG’s leadership team.
Mathew Philip, MD, Treasurer
Dr. Mathew Philip, board-certified in internal medicine, serves as treasurer of DuPage Medical Group (DMG). He also serves as the Medical Director of Clinical Innovation for the organization where he focuses on integrating clinical innovations into DMG’s existing programs and bringing new concepts to life that will make healthcare better for patients and communities served. Within his leadership role, Dr. Philip upholds active listening, honesty, trust and strives to lead by example while empowering others.
Dr. Philip specializes in the management of senior patients with complex health issues at DMG’s BreakThrough Care Center location in Wheaton.
He joined DMG in 2009 and was appointed treasurer in 2019.
Dr. Philip is passionate about healthcare because he believes it serves as a foundational key for all people. Additionally, he enjoys how healthcare creates constant opportunities for improvement and endless chances to positively impact the lives of others.
He earned his medical degree from Northwestern University Feinberg School of Medicine and completed his residency in internal medicine at the University of Illinois at Chicago.
Dr. Philip is deeply connected to the healthcare field because he has seen its direct impact while his father was diagnosed with cancer. During this time, he saw how the medical field influenced his father’s faith, family and perseverance. Within the community, Dr. Philip is actively involved in medical mission trips and has traveled to Mexico, Haiti, Nepal and other locations. These trips allow him to treasure the importance of giving back to those less fortunate in addition to creating fresh perspectives about life. The most rewarding accomplishment of his career thus far has been choosing to be part of DMG. He cherishes DMG’s continuous mission focused on changing healthcare for the better.
- Awarded a medal of excellence by the US surgeon general in 2018
Donald Hoscheit, MD, Chief Medical Officer
Dr. Donald Hoscheit, board-certified gastroenterologist, serves as the Chief Medical Officer of DuPage Medical Group (DMG). In his leadership role, he upholds integrity, humility and accountability while empowering others. He further demonstrates communication and empathy as a physician.
He has been in practice at DMG for more than 30 years and has held many leadership roles within and outside the organization. In addition to serving as chief medical officer, he serves as a member of the DMG Board of Directors and as a leader on several of DMG’s internal committees. He also serves on the Physician’s Leadership Council and Credentials Committee at Northwestern Medicine Central DuPage Hospital and the finance committee at his church.
Dr. Hoscheit practices gastroenterology full-time, specializing in diseases and disorders of the digestive tract, endoscopic surgery, colon cancer detection and screening, colitis, Crohn’s disease and peptic ulcer disease.
He is passionate about healthcare and believes it is an honor and privilege to be trusted by someone to provide their care.
He earned his medical degree from the Loyola University Stritch School of Medicine and completed his internship, residency in internal medicine and fellowship training in clinical gastroenterology at the Loyola University Medical Center. He is a fellow of both the American College of Gastroenterology (ACG) and the American Gastroenterological Association (AGA).
Dr. Hoscheit enjoys spending time with his family and practicing his faith; both activities challenge him every day. When time allows, he also likes to read, travel, hike and cycle. Within the community, he has served on hospital and medical society boards. The most rewarding accomplishment of his career thus far has been seeing his gastroenterology department grow from a group of four to a group of over 30 excellent caring providers. He is proud he can have a role in DMG’s growth and work alongside and learn from compassionate, dedicated physicians and administrative leaders.
- Elected as a fellow of the ACG and AGA
Christina E. Bratis, MD
Board-certified in internal medicine, Dr. Christina E. Bratis has extensive experience as a hospitalist.
Dr. Bratis joined DMG in August 2009. As a leader, she is known for being calm and fair and is recognized for her focus on understanding the perspective of others.
She is passionate about healthcare due to the irrefutable impact it has on her patients and their communities, forming the foundation of a happy and productive life.
She received her medical degree in 2005 from Rush Medical College, completed her residency at the University of Illinois at Chicago, and served an additional year there as chief resident in internal medicine. She is affiliated with Advocate Good Samaritan Hospital, Edward Hospital, Elmhurst Hospital, and Northwestern Medicine Central DuPage Hospital.
Dr. Bratis loves connecting with her family and friends in her free time. She enjoys food, travel, the outdoors, and running. Within the community, she played an instrumental role as the Clinical Leader of the McCormick Place Alternate Care Facility, the first local field facility built to address the city of Chicago and state of Illinois’ COVID-19 response. The most rewarding accomplishment of Dr. Bratis’ career thus far has been being able to develop connections with her patients, working to earn their trust as she cares for them through the often vulnerable and stressful experience of being in the hospital.
Shilpa Reddy Cherukupally, MD
Dr. Shilpa Reddy Cherukupally, board-certified otolaryngologist, has more than 15 years of experience within her specialty. Her medical interests include: minimally invasive sinus surgery, in-office balloon sinuplasty, sinus surgery in adults and children, treatment of nasal obstruction and snoring in adults and children as well as pediatric otolaryngology conditions. In her leadership role, Dr. Cherukupally upholds communication, collaboration and empathy when empowering others. Practicing at DMG since August 2005, she previously served as director of pediatric otolaryngology at Cornell Medical Center/New York Presbyterian Hospital as well as the assistant professor of Otolaryngology Head and Neck Surgery at Cornell Medical School.
Dr. Cherukupally is passionate about healthcare because she cherishes how the medical field is an outlet to meaningfully improve people’s daily lives.
She received her undergraduate degree from Duke University and her medical degree from Baylor College of Medicine in 1997. She completed her residency through Harvard Medical School at the Massachusetts Eye and Ear Infirmary and completed her fellowship training in pediatric otolaryngology at University of Chicago Comer Children’s Hospital. Dr. Cherukupally is affiliated with Edward Hospital and Northwestern Medicine Central DuPage Hospital.
Dr. Cherukupally enjoys spending time with her husband and two children, traveling and indulging in various cuisines as an avid foodie. Additionally, she has climbed Mount Kilimanjaro and ran the Chicago Marathon. Within the community, she has participated in humanitarian missions with non-profit organization, “Medical Missions for Children.” The most rewarding accomplishment of Dr. Cherukupally’s career thus far has been winning the CUE award for teaching at Harvard.
- Named one of Castle Connolly’s ‘Top Doctors’ in 2019
- Named one of Castle Connolly’s ‘Top Doctors’ in 2017
David Dungan, MD
Dr. David Dungan, board-certified in internal medicine and pediatrics, is an experienced internist and pediatrician who specializes in high quality personalized healthcare for all ages. In his leadership role, Dr. Dungan upholds active listening, consensus building, and integrity. He takes this same approach to the delivery of care of his patients.
His special areas of clinical interest are cholesterol, hypertension, nutrition and diabetes, including obesity prevention and lifestyle medicine.
Dr. Dungan joined DMG in 2000; outside of his medical practice, he chairs the Quality Assurance and Utilization Management Committee of DuPage Medical Group. In addition, he serves as board chair for FORWARD (Finding Opportunities that Result in Wellness for All Residents of DuPage), a 501c3 charitable organization which is dedicated to building community-based systems to counter the growing problem of chronic disease and health disparities. Also, Dr. Dungan has been awarded as a Fellow of the American Academy of Pediatrics and a Fellow of the American College of Physicians.
He is passionate about healthcare because of the overall experience demonstrated between patients and providers; there is an ability for patients to generate self-improvement.
He received his medical degree in 1988 from Loyola University Stritch School of Medicine in Maywood. Dr. Dungan completed his combined residency in internal medicine and pediatrics at Loyola University Medical Center/Foster McGaw Hospital in 1992. He is affiliated with Advocate Good Samaritan Hospital.
Dr. Dungan is the proud father of triplets, who are now young adults. As a champion of healthy lifestyle habits, he enjoys culinary medicine as well as the arts and recreational sports. Within the community, he has served on various hospital committees, has been a speaker for new mom/baby classes and donated his time to community organizations. He and his wife are active supporters and fundraisers for Misericordia, because of their belief in the way this organization has helped their daughter and many others with intellectual disabilities thrive. He also has coached youth baseball, volunteered with his parish’s health team and served periodically as a community instructor for clinical medical residents and advanced nursing students. Currently, Dr. Dungan represents DMG on the DuPage Health Coalition, a consortium of health care providers committed to providing access to healthcare for residents of DuPage County. The most rewarding accomplishment of his career thus far has been learning that his two sons have chosen medicine as careers; he hopes their decisions to enter this field were reflective of his own care philosophy that he strives to implement daily to his patients.
Juliet Fallah, MD
Dr. Juliet Fallah, board-certified in radiology, serves on DuPage Medical Group’s (DMG) radiology team and is the radiation safety officer of DMG. She developed policies and implemented protocols for DMG patients to minimize and track imaging radiation exposure. In her leadership role, Dr. Fallah upholds inclusiveness, creativity and inspiration when empowering others.
Dr. Fallah has been practicing at DMG for several years, following her work at Advocate Good Samaritan Hospital where she developed the PET/CT program as well as the CT angiography program.
She is passionate about healthcare because she loves having the chance to truly help people.
She completed her fellowship training in chest imaging at the Mallinckrodt Institute of Radiology at Barnes-Jewish Hospital in St. Louis.
Dr. Fallah is an avid reader and firm supporter of the arts. She also enjoys traveling and is constantly in awe of her two children. Within the community, she fundraises for Medglobal International and has mentored many students in their journeys into the medical field. The most rewarding accomplishments of Dr. Fallah’s career thus far have been spearheading the PET/CT oncologic imaging program at DMG, launching our screening low dose chest CT program and implementing our program to provide the lowest radiation dose possible during imaging procedures.
- Recognized in International Women’s Forum 2018, 2019
Senior Management Team
Steve Nelson, CEO
Steve Nelson is the Chief Executive Officer of DuPage Medical Group. For more than 30 years, Steve has been dedicated to improving the healthcare system for both patients and clinicians through his experiences at both payer and provider organizations. Prior to joining DMG he served as the CEO of UnitedHealthcare, a $190 billion division of UnitedHealth Group. During his 15-year tenure, he served in key leadership positions in both the Commercial and Government businesses and drove efforts that resulted in increased growth, employee engagement and customer satisfaction. Steve also brings to bear significant provider experience having served in a variety of executive roles with Henry Ford Health System.
As CEO, Steve works collaboratively with the leadership team and Board of Directors of the physician group to set the strategy for the organization and to execute plans to deliver on its promise of making healthcare better for patients and the communities served.
Steve earned his Bachelor of Arts degree in Biology from Portland State University and holds a Master’s degree in both Business Administration and Health Services Administration from the University of Michigan.
Steve and his wife Keri are active in their community and the outdoors and love spending time with family. Steve, himself, is an avid triathlete and five-time IRONMAN finisher, including the IRONMAN World Championship.
Mike Pacetti, CFO
Mike Pacetti serves as CFO of DuPage Medical Group.
Since joining DMG as one of the founding leaders at its start in 1999, Mike has served as the CFO and a valued leader in the organization. In his role, he oversees the strategic and financial planning, cash management, accounting, budgeting, financial reporting, patient accounts, coding and compliance, safety and risk management and physician recruitment.
In 2012, Mike was selected as an honoree by the Daily Herald Business Ledger’s first annual “CFO of the Year Awards.” Prior to joining DMG in 1999, he was the controller of Suburban Heights Medical Center, a group practice in the South suburbs of Chicago with over 60 physicians and a variety of ancillary services, including a surgery center.
During his tenure at DMG, Mike has guided the organization through a number of strategic initiatives and acquisitions, including serving as co-CEO.
He earned his bachelor’s degree in accounting from Illinois State University and is a certified public accountant.
Mike enjoys spending time with his wife and three kids. An avid Chicago sports fan, he often can be found cheering on the Chicago Cubs and Chicago Bears in addition to hosting tailgate festivities on game days.
Donna Cooper, COO
Donna Cooper serves as Chief Operating Officer of DuPage Medical Group (DMG). In her leadership role, she upholds integrity, humility and resilience while empowering others.
She partners collaboratively with physicians and leaders throughout the organization to ensure an exceptional patient experience while guiding strategic growth, new service lines and improving efficiencies across all DMG operations sites.
Donna joined DMG in 2018 with more than 20 years of healthcare industry experience, most recently serving as chief operating officer of Advocate Medical Group (AMG). In a previous role, she served as president of Advocate Dreyer Medical Clinic where she directed various healthcare business operations on all levels.
Prior to her tenure with Advocate, Donna worked as the chief financial officer and then CEO of Physicians Clinic of Iowa. She also previously held positions at a managed care company where she negotiated payer, vendor and Physician-Hospital Organization (PHO) contracts.
Getting up every morning knowing she works in an industry that centers upon making a difference and improving lives, ignites Donna’s passion for her work. This reminder balances her business knowledge and expertise within an industry focused on health and healing.
Donna is a graduate of the University of Iowa, where she received both her bachelor’s degree in Accounting and master’s degrees in Health Administration.
Donna enjoys spending time with her husband, three children, family and friends. As a fitness enthusiast, she also treasures time keeping up with her own health, running 35 – 40 miles per week. Within the community, Donna is active in her local school district and volunteers with the American Heart Association, in addition to local food pantries. The most rewarding accomplishment of her career thus far has been having the opportunity to be part of the DMG leadership team during the COVID-19 pandemic. Donna has appreciated closely collaborating with fellow DMG team members to ensure all patients, physicians and associates remained safe and informed during this unprecedented time.
- Recognized as one of Chicago United’s ‘Business Leaders of Color’ in 2013
- Nominated Cedar Rapids ‘Forty Under 40’ in 2006
Nick Martin, CTO
Nick Martin serves as the Chief Technology Officer of DuPage Medical Group (DMG). In his leadership role, Nick upholds innovation, compassion and team building while empowering others.
With more than 15 years of experience in healthcare IT, Nick is a key leader on the senior management team, where he provides expertise in application development, infrastructure, analytics and consumer experience.
Prior to joining DMG in 2018, he held positions with UnitedHealth Group’s Optum, first as vice president of innovation research and development, then as CIO of its international division, where he directed all aspects of technology, from strategic planning and desktop support to transforming and implementing IT platforms to support business growth in the U.K., South America and Australia.
Nick also previously served as the senior information technology director of UnitedHealthcare Medicare and Retirement, as well as the information technology director of Pharmacy Solutions/Consumer Health Products, where he established the vision and executed the information technology strategy for sales, marketing and service businesses.
Nick’s passion lies in the development of healthcare technologies. As a digital transformation evangelist and innovator, he has developed award-winning mobile applications designed to drive consumer engagement and improve individuals’ health and well-being. He believes applying technology to the point of care will yield a transformative impact on how healthcare is delivered.
Nick enjoys soccer, both as an avid fan and active player. The greatest accomplishment of his career thus far has been launching a market mobile solution that was leveraged by over a million healthcare consumers within the first year.
Tracey Salinski JD, LL.M, General Counsel & Senior Vice President, Legal
Tracey Salinski serves as General Counsel and Senior Vice President at Legal of DuPage Medical Group (DMG). In her leadership role, she upholds accountable work standards across her team and implements support, mentorship, educational and growth opportunities while empowering others.
With more than 20 years of specialized legal experience, she has deep expertise in corporate healthcare legal matters, including mergers, acquisitions and healthcare regulatory matters. She is responsible for developing DMG’s enterprise legal strategies and oversees its legal department, which includes compliance and risk management. She also provides valuable legal counsel to DMG’s executive leadership team, Board of Directors and physicians.
Prior to joining DMG, she held positions with law firms and healthcare organizations in the Chicagoland area, most recently serving as Associate General Counsel at Sonova US. She was previously a supervising attorney at Inside Out Legal, LLC, where she provided legal advice as interim Chief Legal Officer to a regional hospital system. Before moving to an in-house role, Tracey was a partner in the healthcare group at Arnstein & Lehr.
Tracey is passionate about healthcare because she finds the patient-centered experience encouraging and fulfilling.
She received her bachelor’s degree from the University of Michigan, J.D. degree from Michigan State University College of Law and Master of Laws from The John Marshall Law School.
Tracey enjoys spending time with family and friends in Chicago, partaking in the Chicago restaurant scene and exploring our city’s diverse neighborhoods. Within the community, she aspires to mentor underprivileged youth in Chicago. The most rewarding accomplishment of Tracey’s career thus far has been being chosen to lead the legal function as General Counsel at DMG.