HealthcareDiscovery.AI / Doctors / Michigan / Grand Rapids / Internal Medicine

Internal Medicine in Grand Rapids, Michigan

Data updated monthly · Last refresh September 2026

451 Internal Medicine providers practice in Grand Rapids, and 24% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Grand Rapids

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Jennifer Hemingway, D.O.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-9536
Dr. Jennifer Rosso, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Jennifer Vacca, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 719-0919
Dr. Jeremy Gentile, DO
Grand Rapids, MI · $3,094 in drug and device payments (2025) · (616) 391-3139
Dr. Jessica O'neil, D.O.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Jessica Smith, M.D.
Grand Rapids, MI · $146 in drug and device payments (2025) · (616) 391-3139
Dr. Jody Banister, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 685-6919
Dr. Joel Vanderiet, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 774-0276
Dr. John Heslip, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-7800
Dr. John Houskamp, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 840-8000
Dr. John Maurer, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 459-3158
Dr. John Parent, MD
Grand Rapids, MI · $143 in drug and device payments (2025) · (616) 391-3777
Dr. John Sisson, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 391-3777
Dr. Jonathan Koons, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Jonathon Richards, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Jordan Cantor, DO
Grand Rapids, MI · $18 in drug and device payments (2025) · (616) 548-6161
Dr. Jordan Murman, MD
Grand Rapids, MI · $14 in drug and device payments (2025) · (616) 391-3777
Dr. Joseph Michael Jacob, MD
Grand Rapids, MI · $20 in drug and device payments (2025) · (616) 391-3139
Dr. Joshua Greendyk, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-1774
Dr. Joshua Kuperus
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3777
Dr. Joshua Owuor, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3777
Dr. Josip Divic, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. June Hillelson, D.O.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 261-1976
Dr. Justin Davies, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 942-7400
Dr. Justin Rieth, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3777
Dr. Kaladevi Nadarajan, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (906) 360-4639
Dr. Karen Gawel, MD
Grand Rapids, MI · $71 in drug and device payments (2025) · (616) 267-8880
Dr. Kartik Patel, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 774-0276
Dr. Kassy Kneen, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Katarzyna Purzycka, DO
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3777
Dr. Kathleen Jarrett, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 391-3139
Dr. Kathleen Jenkinson, DO
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Kathleen O'hare, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 365-9575
Dr. Kathleen Simmons, D.O.
Grand Rapids, MI · $73 in drug and device payments (2025) · (616) 391-3139
Dr. Kathryn Driza, D.O.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 774-0276
Dr. Kavitha Golipelly, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 774-0276
Dr. Keerthi Sajja, DO
Grand Rapids, MI · $27 in drug and device payments (2025) · (616) 685-4615
Dr. Keith Crane, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 957-9237
Dr. Keith Smart, D.O.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Kelly Barcheski, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 267-8338
Dr. Kelly Parker, DO
Grand Rapids, MI · $24 in drug and device payments (2025) · (616) 391-3139
Dr. Kenneth Fawcett, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-7800
Dr. Kenneth Nelson, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 957-9237
Dr. Keowa Vasquez, M.D.
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Kevin Krueger, DO
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3139
Dr. Khan Nedd, M.D.
Grand Rapids, MI · $210 in drug and device payments (2025) · (616) 954-0600
Dr. Kristen Kitzsteiner, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 685-3800
Dr. Kristin Essenberg, DO
Grand Rapids, MI · No drug or device payments recorded (2025) · Telehealth · (616) 267-7700
Dr. Kyle Rau, DO
Grand Rapids, MI · $246 in drug and device payments (2025) · (616) 391-3139
Dr. Laith Fakhouri, MD
Grand Rapids, MI · No drug or device payments recorded (2025) · (616) 391-3777

Conditions Internal Medicine providers in Grand Rapids, Michigan commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Grand Rapids, Michigan?

There are 451 Internal Medicine providers with active NPI records practicing in Grand Rapids, according to federal NPPES data refreshed monthly.

How many Internal Medicine providers in Grand Rapids received drug or device company payments?

109 of 451 (24%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in Grand Rapids treat?

Internal Medicine providers in Grand Rapids commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Grand Rapids Internal Medicine across Michigan

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.