NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William S Marsh III, Do, PA

Physical Medicine & Rehabilitation Physician in Killeen, TX · enumerated 2006 · authorized official William Marsh, Owner.

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

National Provider Identifier

1063440014

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name William S Marsh III, Do, PA
Practice address 5320 E Central Texas Expy Ste 105, Killeen, TX, 76543
Phone (254) 519-1900
Fax (254) 519-1980
Enumeration date Jun 29, 2006
Last updated in NPPES Aug 8, 2022

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians Primary
261QU0200X Urgent Care Clinic/Center Ambulatory Health Care Facilities Secondary

Authorized official

Name William Marsh
Title Owner
Phone (254) 519-1900

Other identifiers

Identifier Type State Issuer
00437R Other TX BLUE CROSS BLUE SHIELD
145079302 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is William S Marsh III, Do, PA located?
The practice location on file with NPPES is in Killeen, TX.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-08-08. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-08.