Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Allan Grim, PH.D.

Audiologist in Oklahoma City, OK · enumerated 2005.

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

National Provider Identifier

1659361665

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Michael Allan Grim

Credential PH.D.

Sex Male

Practice address 921 Ne 13th St, Vamc Audiology #126, Oklahoma City, OK, 73104

Phone (405) 270-0501

Enumeration date Oct 21, 2005

Last updated in NPPES Apr 15, 2025

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 266 (OK) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
100666350A	Medicaid	OK	-
736017987108	Other	OK	DEPT OF REHAB

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.

Read the full guide → Validate an NPI →

Frequently asked questions

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.

What specialty is Michael Grim?

Michael Grim is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-15.