Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Joe K Gregory, DO

Internal Medicine Physician in Butte, MT · enumerated 2006.

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

National Provider Identifier

1336127463

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Registry record

Entity type Individual (Type 1)

Name Mr. Joe K Gregory

Credential DO

Sex Male

Practice address 435 S. Crystal, Suite 300, Butte, MT, 59701

Phone (406) 496-3600

Fax (406) 496-3653

Enumeration date Jan 9, 2006

Last updated in NPPES Oct 22, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2702 (AZ) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 12797 (MT) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
111097	Medicaid	AZ	-

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 NPI 1336127463 active?

Yes, as of the latest NPPES snapshot, NPI 1336127463 is active (record last updated 2011-10-22).

How do I verify Joe Gregory's NPI record?

Cross-check NPI 1336127463 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-22.