HealthcareDiscovery.AI / Doctors / Michigan / Kalamazoo / Critical Care Medicine (Internal Medicine)

Critical Care Medicine (Internal Medicine) in Kalamazoo, Michigan

Data updated monthly · Last refresh September 2026

12 Critical Care Medicine (Internal Medicine) providers practice in Kalamazoo. Listings are drawn from federal public records and are not endorsements.

Critical Care Medicine (Internal Medicine) providers in Kalamazoo

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. An Nguyen, MD
Kalamazoo, MI · $34 in drug and device payments (2025) · (269) 341-7762
Dr. Armand Tanase, M.D.
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 345-1161
Dr. James Hull, D.O
Kalamazoo, MI · $46 in drug and device payments (2025) · (269) 552-2882
Dr. James Shubert, D.O.
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 341-7762
Dr. Jeffrey Wilt, M.D.
Kalamazoo, MI · $348 in drug and device payments (2025) · (269) 337-6300
Dr. Joanna Olewicz, M.D.
Kalamazoo, MI · $21 in drug and device payments (2025) · (269) 552-2970
Dr. Julia Kaseman, D.O.
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 345-1161
Dr. Julie Bourbonnais, MD
Kalamazoo, MI · $33 in drug and device payments (2025) · (269) 341-7762
Dr. Matthew Rossing, MD
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 341-7762
Dr. Michael Warlick, MD
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 345-1161
Dr. Roy Putnam, D.O.
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 341-7762
Dr. Spencer Winters, M.D.
Kalamazoo, MI · No drug or device payments recorded (2025) · (269) 341-7762

Common questions

How many Critical Care Medicine (Internal Medicine) providers are in Kalamazoo, Michigan?

There are 12 Critical Care Medicine (Internal Medicine) providers with active NPI records practicing in Kalamazoo, according to federal NPPES data refreshed monthly.

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 Kalamazoo Critical Care Medicine (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.