Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Stevens Marsh III, DO

Physical Medicine & Rehabilitation Physician in Killeen, TX · enumerated 2005 · practices at William S Marsh III, Do, PA.

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

National Provider Identifier

1730162827

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Registry record

Entity type Individual (Type 1)

Name William Stevens Marsh III

Credential DO

Sex Male

Practice address 5320 E Central Texas Expy Ste 105, Killeen, TX, 76543

Phone (254) 519-1900

Fax (254) 519-1980

Enumeration date Nov 22, 2005

Last updated in NPPES Mar 4, 2021

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License K7580 (TX) 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
029536203	Medicaid	TX	-
8938MO	Other	TX	BLUE CROSS BLUE SHIELD
742914179	Other	TX	HUMANA/MILITARY-TRICARE
80495	Other	TX	SCOTT & WHITE PLAN

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 William Marsh?

William Marsh 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 →

Scarlett Foster Physician Assistant · Killeen, TX NPI 1144211004 William S Marsh III, Do, PA Physical Medicine & Rehabilitation Physician · Killeen, TX NPI 1063440014 Beth Vanderpool Physician Assistant · Killeen, TX NPI 1285718213

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-04.