Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian C. Buck, M.D.

Physical Medicine & Rehabilitation Physician in Austin, TX · enumerated 2005.

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

National Provider Identifier

1396747473

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Registry record

Entity type Individual (Type 1)

Name Brian C. Buck

Credential M.D.

Sex Male

Practice address 4201 Bee Cave Road, Suite C-102, Austin, TX, 78746

Phone (512) 279-2386

Fax (512) 279-2387

Enumeration date Jun 2, 2005

Last updated in NPPES May 12, 2011

Taxonomy & licenses

204R00000X Electrodiagnostic Medicine Physician Allopathic & Osteopathic Physicians · License H4878 (TX) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License H4878 (TX) Primary

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License H4878 (TX) Secondary

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
134872410	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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Brian Buck?

Brian Buck is registered in NPPES with the primary taxonomy of Physical Medicine & Rehabilitation Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

John Obermiller Physical Medicine & Rehabilitation Physician · Austin, TX NPI 1831191972 Brian C. Buck, M.D., P.A. Physical Medicine & Rehabilitation Physician · Austin, TX NPI 1316196082 John P. Obermiller, M.D., P.A. Physical Medicine & Rehabilitation Physician · Austin, TX NPI 1396998050

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-12.