Sparrow Care Network Board of Managers

The SCN Board of Managers was created to establish and oversee the vision and mission of SCN through the management of operations, policies, procedures, and payer relationships.

Cynthia Buchweitz, M.D. bio

Cynthia Buchweitz, M.D.

Dr. Buchweitz is a graduate of Michigan State University College of Human Medicine and the Sparrow/MSU Family Medicine Residency Program. She is board-certified in Family Medicine and has been with Sparrow Medical Group North since 2001. Dr. Buchweitz currently serves as the practice leader at SMG-North in addition to seeing Patients.

Joseph Bustamante, D.O., FACEP

Dr. Bustamante received his medical degree from Michigan State University College of Osteopathic Medicine and completed his residency in Emergency Medicine at the MSU-Affiliated Emergency Residency in 1992. He joined Memorial Healthcare in 1992, practicing Emergency Medicine and served as the Medical Director for the ED from 2004-2013. He has served on numerous committees including Chief of Staff from 2012-2017. He served as president of the Michigan College of Emergency Physicians from 2002-2003 and is an Oral Board examiner for ABEM. He currently serves as the Chief Medical Officer at Memorial.

Linda Chermak, M.D.

Dr. Chermak completed her undergraduate studies at the University of San Diego, and her graduate studies in African History at the University of Cape Town and UCLA. She earned her medical degree from Michigan State University's College of Human Medicine and completed the Sparrow Family Medicine Residency program. Since 2013, Dr. Chermak has been a Family Medicine Physician at Family Care Specialists in Charlotte, a primary care practice of Hayes Green Beach (SHE), where she also serves as the PCMH Physician Champion. Dr. Chermak loves teaching medical students and recently received the College of Human Medicine's Community Faculty Member of the Year award.

Douglas Edema, M.D. bio

Douglas Edema, M.D., MPA, FACHE

Dr. Edema is the President of Sparrow Medical Group and Sparrow Care Network. He is responsible for the strategic direction and operations of Sparrow’s employed medical group, which now numbers more than 400 providers and Sparrow Care Network which numbers over 600 physicians. Dr. Edema has held various hospital, health plan, and medical group leadership roles throughout his career. He is a graduate of Hope College, the Michigan State University College of Human Medicine and the Grand Rapids Family Medicine Program and received a master’s degree in Public Administration from Western Michigan University.

Peter Graham, M.D.

Dr. Graham is the Executive Medical Director of Physician’s Health Plan. In his role with Sparrow Health System’s affiliate health plan, he oversees medical management, quality, credentialing, and network services. He has also been instrumental in Sparrow’s clinically integrated network development, especially the creation of a population health services organization, as well as trying to advance All Things Quadruple Aim. He has also served as the Vice President of Sparrow Medical Group, and medical director of Sparrow Home Care. Dr. Graham is also the past Chair of the Michigan Board of Medicine. Dr. Graham is a Family Physician by training and teaches in the Sparrow/Michigan State University Family Medicine residency program. He is a graduate of the University of Michigan – Ann Arbor, the Michigan State University College of Human Medicine, and its residency program.

Gregory A. Holzhei, D.O., MHA, CPE

Dr. Holzhei completed his undergraduate studies at Michigan State University, medical school at Des Moines University, and residency at Garden City Osteopathic Hospital. Since 2003, Dr. Holzhei has been a Family Physician at Sparrow St. Johns Professional Associates. He holds a Master’s Degree in Healthcare Administration and is a Certified Physician Executive. Holzhei, a Board Member for Sparrow Medical Group since 2012, also served as Chief of Staff at Sparrow Clinton Hospital from 2011-2012 and sat on Sparrow Clinton Hospital’s Board of Directors during that time.

Heidi Johnson, D.O.

Dr. Johnson is a graduate of the Michigan State University College of Osteopathic Medicine. She completed her internship at MSU Genesys Regional Medicine Center in Flint, Michigan. She completed her Family Medicine residency with MSU at Bay Medical Center in Bay City, Michigan. Dr. Johnson is board-certified in Family Medicine and has been practicing with Sparrow Medical Group North in Lansing since 2006.

Lucas Julien, M.D. bio

Lucas A Julien, M.D.

Dr. Julien completed his general surgery training at Michigan State University and a fellowship in colon and rectal surgery at Creighton University in Omaha, Nebraska. He has contributed to several scientific publications and is coauthor of a chapter in the textbook Shackelford's Surgery of the Alimentary Tract, 7th edition. Dr. Julien moved back to Lansing nine years ago to practice as a full-time board-certified colon and rectal surgeon and general surgeon with Capitol Colorectal Surgery, LLC which has served Lansing and Mid-Michigan for over 40 years. He is currently the managing partner at Capitol Colorectal. Dr. Julien is a past chair of the Department of Surgery at Sparrow Health and currently serves as a member of the Sparrow Care Network Performance Evaluation Advisory Committee. He lives in Grand Ledge with his wife and three daughters.

William Peterson, M.D.

Dr. Peterson received his medical degree from the Michigan State University College of Human Medicine and completed residency training in Anesthesiology and Critical Care Medicine and a fellowship in Cardiovascular and Thoracic Anesthesiology at Johns Hopkins Hospital. He was an Assistant Professor in Cardiac Anesthesiology before returning to Sparrow Hospital at the start of the open heart surgery program in 1994. Previous leadership roles at Sparrow Hospital include Medical Director of Cardiovascular Services and Chairman of the Department of Anesthesiology. Dr. Peterson currently serves as the Medical Director of the Operating Room and Anesthesia Services.

Paula Reichle

Reichle is Chief Financial Officer and Senior Vice President of Sparrow Health System, a $1.1 billion in annual net revenue integrated delivery system providing tertiary and trauma services in an eight-county region in Mid-Michigan. She has executive responsibility for all financial service functions and supply chain management, among other areas. Ms. Reichle previously held key leadership positions at the former Ingham Regional Medical Center in Lansing and was an executive in the financial services industry. A certified public accountant, she received her undergraduate degree from the Eli Broad School of Business Administration at Michigan State University and her graduate degree from the Richard DeVos Graduate School of Management at Northwood University. She has been involved in numerous community and volunteer activities, including serving on the Accounting Advisory Boards for MSU and Lansing Community College.

Joseph Ruth

Ruth is the Executive Vice President and Chief Operating Officer of Sparrow Health System. He is responsible for the day-to-day operations of the flagship hospital, the growth and development of Sparrow Medical Group, and the integrated delivery networks of Sparrow Care Network and Sparrow Physician Health Network. Joe is a graduate of Michigan State University and Northwood University, where he earned Bachelors and Master’s Degrees, respectively. Mr. Ruth also has lead responsibilities in the development and implementation of the System’s Strategic Plan, regional growth, and Merger and Acquisition activities.

Not pictured, Camy Chapin, M.D.