Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kermit R Erwin, MD

Obstetrics & Gynecology Physician in Defiance, OH · enumerated 2005.

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

National Provider Identifier

1821081464

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Registry record

Entity type Individual (Type 1)

Name Kermit R Erwin

Credential MD

Sex Male

Practice address 1250 Ralston Ave, Suite 205, Defiance, OH, 43512

Phone (419) 782-5774

Fax (419) 782-6103

Enumeration date Aug 30, 2005

Last updated in NPPES Apr 30, 2012

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 35077260 (OH) 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
160050275	Other	OH	RRMC
03536	Other	OH	PHC
4228849	Other	OH	AETNA
2165688	Medicaid	OH	-
0702351	Other	OH	UHC
000000177993	Other	OH	ANTHEM

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

What specialty is Kermit Erwin?

Kermit Erwin is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-30.