Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Clarence E. Grim, M.D.

Geriatric Medicine (Internal Medicine) Physician in Las Vegas, NV · enumerated 2006.

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

National Provider Identifier

1760404768

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Registry record

Entity type Individual (Type 1)

Name Mr. Clarence E. Grim

Credential M.D.

Sex Male

Practice address Las Vegas, NV, 89144

Phone (414) 916-0841

Enumeration date Jul 25, 2006

Last updated in NPPES Mar 10, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 36279 (WI) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 36279 (WI) Secondary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 14040 (NV) 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
32093400	Medicaid	WI	-

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

What is the NPI number for Clarence Grim?

The National Provider Identifier (NPI) for Clarence Grim is 1760404768, a Type 1 (individual) record in the CMS NPPES registry.

Where does Clarence Grim practice?

The practice location on file with NPPES is in Las Vegas, NV. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-10.