Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David M Zimmerman, M.D.

Hematology & Oncology Physician in Fort Wayne, IN · enumerated 2006 · practices at American Oncology Partners, P.A..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639148232

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Registry record

Entity type Individual (Type 1)

Name Dr. David M Zimmerman

Credential M.D.

Sex Male

Practice address 7910 W Jefferson Blvd Ste 108, Fort Wayne, IN, 46804

Phone (260) 484-8830

Enumeration date Mar 16, 2006

Last updated in NPPES May 15, 2025

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 01050092A (IN) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 01050092A (IN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3045412	Medicaid	OH	-
000000389089	Other	IN	ANTHEM
200387100	Medicaid	IN	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify David Zimmerman's NPI record?

Cross-check NPI 1639148232 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639148232 active?

Yes, as of the latest NPPES snapshot, NPI 1639148232 is active (record last updated 2025-05-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-15.