HealthcareDiscovery.AI / Doctors / Wisconsin / Green Bay / Medical Oncology

Medical Oncology in Green Bay, Wisconsin

Data updated monthly · Last refresh September 2026

10 Medical Oncology providers practice in Green Bay. Listings are drawn from federal public records and are not endorsements.

Medical Oncology providers in Green Bay

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. Alexander Starr, MD
Green Bay, WI · $650 in drug and device payments (2025) · (920) 884-3135
Dr. David Groteluschen, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · (920) 884-3135
Dr. Evan Wenig
Green Bay, WI · No drug or device payments recorded (2025) · (866) 884-3135
Dr. Gerald Bayer, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · (920) 432-6049
Dr. Hassan Tahsildar, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · (920) 435-8326
Dr. James Mcgovern, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · (920) 866-3318
Dr. Kamal Kant Singh Abbi, M.D.
Green Bay, WI · $131 in drug and device payments (2025) · (920) 884-3135
Dr. Maria De Villa, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · Telehealth · (920) 435-8326
Dr. Ruth Warren, DO
Green Bay, WI · $112 in drug and device payments (2025) · (920) 884-3135
Dr. Thomas Saphner, M.D.
Green Bay, WI · No drug or device payments recorded (2025) · (920) 884-3135

Common questions

How many Medical Oncology providers are in Green Bay, Wisconsin?

There are 10 Medical Oncology providers with active NPI records practicing in Green Bay, 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 Green Bay Medical Oncology across Wisconsin

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.