GERALD K BAYER M.D.
NPI 1285726729
Internal Medicine - Medical Oncology in Green Bay, WI

Q: What is Gerald Bayer's NPI number?

The NPI number for Gerald Bayer is 1285726729. It was assigned to this individual provider in the NPPES registry on September 29, 2006.

Q: What is Gerald Bayer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Gerald Bayer was last updated on June 29, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 29, 2006

835 S VAN BUREN ST, GREEN BAY, WI 54301(920) 432-6049(920) 884-3271 Get Directions Write a Review

NPPES record last updated: June 29, 2010. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Gerald K Bayer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GERALD K BAYER M.D. (NPI 1285726729) is an individual medical oncology provider in Green Bay, Wisconsin, licensed in Wisconsin (22282) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1285726729

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameGERALD K BAYERCredential: M.D.

Location Address835 S VAN BUREN STGreen Bay, WI 54301-3526

Mailing AddressPo Box 13453Green Bay, WI 54307-3453 · (920) 593-3745 · Fax (920) 884-3271

Phone(920) 432-6049

Fax(920) 884-3271

Sole ProprietorNo

Enumeration DateSeptember 29, 2006

Last NPPES UpdateJune 29, 2010

✔ NPI 1285726729 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

Licenses✔ Licensed in WI · 22282✔ Licensed in MI · 4301051043

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

835 S VAN BUREN ST, Green Bay, WI 54301

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Other Identifiers 7

Medicaid101793808MI

OtherGB051043MI · Blue Cross Blue Shield Mi

Medicare UPINB51433

Medicare ID-Type Unspecified000107071WI

Medicare ID-Type UnspecifiedM84790004MI

Medicaid30278200WI

Other900002925Rr Medicare

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARY LYNN BARTEL MD

Pediatrics

835 S VAN BUREN ST, ROOM 1041
GREEN BAY, WI 54301

Brown County (920) 496-4700

DR. EKMINI WIJESINGHE MD

Hospitalist

835 S VAN BUREN ST, ST VINCENT HOSPITAL
GREEN BAY, WI 54301

Brown County (920) 272-1586

SALLY SCHLISE MD

Radiology (Radiation Oncology)