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

Dr. William Gregory Penny, M.D.

Anatomic Pathology & Clinical Pathology Physician in Fort Smith, AR · enumerated 2015.

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

National Provider Identifier

1689069478

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Registry record

Entity type Individual (Type 1)

Name Dr. William Gregory Penny

Credential M.D.

Sex Male

Practice address Fort Smith, AR, 72903

Phone (479) 452-9416

Fax (479) 242-1990

Enumeration date Mar 30, 2015

Last updated in NPPES Feb 18, 2020

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

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License E-11963 (AR) Primary

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

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 William Penny's NPI record?

Cross-check NPI 1689069478 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689069478 active?

Yes, as of the latest NPPES snapshot, NPI 1689069478 is active (record last updated 2020-02-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-18.