Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William A Biggers Jr., M.D.

Emergency Medicine Physician in Round Rock, TX · enumerated 2005.

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

National Provider Identifier

1588640155

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Registry record

Entity type Individual (Type 1)

Name William A Biggers Jr.

Credential M.D.

Sex Male

Practice address 300 University Blvd, Round Rock, TX, 78665

Phone (512) 509-0100

Enumeration date Dec 15, 2005

Last updated in NPPES Dec 19, 2016

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License J3992 (TX) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 9801598 (NC) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 9801598 (NC) 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
930128838	Other	TX	RAILROAD MEDICARE PROV NO
NC8999E	Other	NC	MEDICARE PTAN
134115808	Medicaid	TX	-
134115809	Medicaid	TX	-
930117318	Other	TX	RAILROAD MCARE PROV NO
8G7963	Other	TX	BCBSTX PROV NO
8A2147	Other	TX	BCBSTX PROV NO

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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 Biggers?

William Biggers is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-19.