Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William G Robertson MD PA

Colon & Rectal Surgery Physician in Austin, TX · enumerated 2006 · authorized official William Robertson, President.

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

National Provider Identifier

1679582530

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Registry record

Entity type Organization (Type 2)

Legal business name William G Robertson MD PA

Practice address 4106 Medical Parkway, Austin, TX, 78756

Phone (512) 418-1755

Fax (512) 418-1010

Enumeration date Aug 7, 2006

Last updated in NPPES Dec 5, 2007

Taxonomy & classification

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License D9636 (TX) Primary

Authorized official

Name William Robertson

Title President

Phone (512) 418-1755

Other identifiers

Identifier	Type	State	Issuer
141127	Other	TX	AETNA

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 G Robertson MD PA located?

The practice location on file with NPPES is in Austin, TX.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-12-05. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-05.