Clinicians affiliated with Spectrum Health

Acute Care Hospitals · Voluntary non-profit - Private · 100 Michigan St Ne, Grand Rapids, MI 49503 · Grand Rapids-Wyoming-Kentwood, MI · CCN 230038

Affiliation snapshotNovember 2, 2026CMS Doctors and Clinicians Facility Affiliation file, current snapshot (no end-of-2024 archive), applied to 2024

Activity year2024Medicare Part B claims, Original Medicare fee-for-service

2,950 clinicians affiliated with Spectrum Health are in the 2024 Medicare Part B data (3,414 listed in the affiliation file).

Each clinician's exact figures are in their Physician Report, from their page. View sample report · Already purchased? Open your report (earlier Local report and passes)

Affiliated clinicians by specialty, 2024

All specialties · Physician Assistant (587) · Nurse Practitioner (410) · Internal Medicine (245) · Family Practice (237) · Anesthesiology (182) · Diagnostic Radiology (159) · Emergency Medicine (132) · Certified Registered Nurse Anesthetist (CRNA) (97) · Orthopedic Surgery (59) · Neurology (57) · Cardiology (50) · General Surgery (46) · Obstetrics & Gynecology (41) · Pulmonary Disease (41) · Physical Medicine and Rehabilitation (38) · Gastroenterology (37) · Urology (36) · Hematology-Oncology (32) · Otolaryngology (32) · Pathology (32) · Ophthalmology (23) · Interventional Radiology (22) · Dermatology (19) · Nephrology (19) · Psychiatry (19) · Psychologist, Clinical (18) · Infectious Disease (16) · Endocrinology (15) · Rheumatology (15) · Neurosurgery (14) · Pain Management (14) · Pediatric Medicine (14) · Podiatry (14) · Interventional Cardiology (13) · Plastic and Reconstructive Surgery (11) · Radiation Oncology (11) · Vascular Surgery (11) · Clinical Cardiac Electrophysiology (10) · Hospitalist (10) · Sports Medicine (10) · Critical Care (Intensivists) (9) · Colorectal Surgery (Proctology) (8) · Medical Oncology (8) · Thoracic Surgery (8) · Advanced Heart Failure and Transplant Cardiology (7) · Allergy/ Immunology (7) · General Practice (7) · Geriatric Medicine (5) · Licensed Clinical Social Worker (5) · Sleep Medicine (5) · Surgical Oncology (5) · Hand Surgery (4) · Hematology (4) · Hospice and Palliative Care (4) · Gynecological Oncology (3) · Interventional Pain Management (3) · Cardiac Surgery (2) · Undersea and Hyperbaric Medicine (2) · Maxillofacial Surgery (1) · Medical Genetics and Genomics (1) · Micrographic Dermatologic Surgery (1) · Oral Surgery (Dentist only) (1) · Osteopathic Manipulative Medicine (1) · Preventive Medicine (1)

Cardiology affiliated with Spectrum Health, 2024

Alphabetical by last name; 50.

Name	City
Wissam M Abdallah, M.D.	Grand Rapids, MI
Mershed Alsamara, MD	Wyoming, MI
Thomas F Boyden, MD	Grand Rapids, MI
David Bryska, MD	Grand Rapids, MI
Rajus Chopra, M.D.	Holland, MI
Lynn J Cronin, M.D.	Norfolk, VA
Jeffrey M Decker, M.D.	Grand Rapids, MI
Kara Denby, M.D.	Boise, ID
Laura M Franey, MD	Wyoming, MI
Keith F Frank, D.O.	Holland, MI
William A Frauenheim	Holland, MI
Gunjan Gholkar, M.D	Wyoming, MI
George J Ghuneim, D.O.	Grand Rapids, MI
Rony D Gorges, M.D.	Wyoming, MI
Victor Hajjar, MD	Greenville, MI
Dustin T Harmon, D.O.	Grand Rapids, MI
Robert L Hooker, MD	Grand Rapids, MI
Wassim I Jawad, MD	Grand Rapids, MI
Timothy A Joseph, M.D.	Grand Rapids, MI
Barbara Karenko, DO	Wyoming, MI
Gary M Katzman, MD	Providence, RI
Mohamad A Kenaan, M.D.	Grand Rapids, MI
John A Key, DO	Wyoming, MI
Sandeep Khurana, M.D.	Grandville, MI
Menhel Kinno, M.D, , MPH	Chicago, IL
Paul J Kovack, D.O.	Wyoming, MI
David E Langholz, M.D.	Grand Rapids, MI
Ali Mahajerin, M.D.	Grand Rapids, MI
Tejinder S Mander, M.D.	Greenville, MI
David A Mcnamara, M.D., M.P.H.	Grand Rapids, MI
Michael W Mcnamara, M.D.	Wyoming, MI
William M Merhi, DO	Grand Rapids, MI
Gregory L Miller, M.D.	Grand Rapids, MI
John C Mulligan, D.O.	Hastings, MI
Abdel Rahman A Omer, M.D.	Grand Rapids, MI
Jose Antonio Rios Salcido, M.D.	Grand Rapids, MI
Suprotim Samaddar, D.O.	Commerce Township, MI
Matthew W Sevensma	Wyoming, MI
Harvinder P Singh, M.D.	Grand Rapids, MI
Douglas B Stewart, M.D.	Muskegon, MI
Eric B Stuart, M.D.	Muskegon, MI
Jose Mariano T Tan, MD-MBA	Grand Rapids, MI
Robert V Trask, M.D.	Springfield, IL
Alexander Turin, MD	Ann Arbor, MI
Ronald Vanderlaan, MD	Grand Rapids, MI
Michael C Vredenburg, D.O.	Grand Rapids, MI
Eric T Walchak, D.O.	Wyoming, MI
Daniel L West, M.D.	Muskegon, MI
Brian D Williamson, MD	Troy, MI
Raymond Y Yeow, MD	Ann Arbor, MI

Affiliation comes from the CMS Doctors and Clinicians Facility Affiliation file, hospital rows only; name, address and type from the CMS Hospital General Information file. CMS does not publish an end-of-year archive of the affiliation file, so the current snapshot is applied to the latest data year. A clinician listed with several hospitals or groups appears on each of their pages. How hospital pages are built