Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Michael Holtzman, DC

Chiropractor in Fort Sill, OK · enumerated 2006 · practices at Reynolds Army Community Hospital.

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

National Provider Identifier

1811080112

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Michael Holtzman

Credential DC

Sex Male

Practice address 2640 Miner Rd, Fort Sill, OK, 73503

Phone (580) 248-4212

Fax (580) 248-4214

Enumeration date Oct 2, 2006

Last updated in NPPES Mar 11, 2025

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 3742 (OK) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Gregory Holtzman's NPI record?

Cross-check NPI 1811080112 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1811080112 active?

Yes, as of the latest NPPES snapshot, NPI 1811080112 is active (record last updated 2025-03-11).

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Margaret Bleckler Occupational Therapist · Fort Sill, OK NPI 1801931498 Stacey Colemanhughes Occupational Therapy Assistant · Lawton, OK NPI 1366564049 Jayrone Cortez Chiropractor · Fort Sill, OK NPI 1477746279 Elena Furdui-Carr General Practice Dentistry · Fort Sill, OK NPI 1396024667 Reynolds Army Community Hospital Military/U.S. Coast Guard Outpatient Clinic/Center · Fort Sill, OK NPI 1932480068 Leon Nguyen Optometrist · Fort Sill, OK NPI 1508352287 Joseph I Santos Physical Therapist · Fort Sill, OK NPI 1336750561 Jennifer Eng Optometrist · Fort Sill, OK NPI 1578155982

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-11.