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

Gary T Brock, M.D.

Pediatric Orthopaedic Surgery Physician in Houston, TX · enumerated 2005.

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

National Provider Identifier

1891783304

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Registry record

Entity type Individual (Type 1)

Name Gary T Brock

Credential M.D.

Sex Male

Practice address Houston, TX, 77030

Phone (713) 799-2300

Fax (713) 794-0283

Enumeration date Oct 10, 2005

Last updated in NPPES Jun 20, 2022

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

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License H0211 (TX) Secondary

207XP3100X Pediatric Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License H0211 (TX) 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
134889802	Medicaid	TX	-

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 Gary Brock's NPI record?

Cross-check NPI 1891783304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891783304 active?

Yes, as of the latest NPPES snapshot, NPI 1891783304 is active (record last updated 2022-06-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-20.