Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin Guillermo, MD

Family Medicine Physician in Webster, TX · enumerated 2005.

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

National Provider Identifier

1851385272

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Registry record

Entity type Individual (Type 1)

Name Benjamin Guillermo

Credential MD

Sex Male

Practice address 250 Blossom St, Ste 400, Webster, TX, 77598

Phone (281) 604-1300

Fax (281) 724-0225

Enumeration date Aug 31, 2005

Last updated in NPPES Oct 5, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License J6979 (TX) Primary

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
080110914	Other	TX	RAILROAD MEDICARE
5994569	Other	TX	AETNA
045336701	Medicaid	TX	-
86Z063	Other	TX	BCBS
87583Z	Other	TX	HMO BLUE

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

What specialty is Benjamin Guillermo?

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

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-05.