Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Irma Pfister, MD

Internal Medicine Physician in Sugar Land, TX · enumerated 2006 · practices at Ks Sc LLC.

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

National Provider Identifier

1790740926

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Registry record

Entity type Individual (Type 1)

Name Irma Pfister

Credential MD

Sex Female

Practice address 11555 University Blvd, Sugar Land, TX, 77478

Phone (713) 442-9100

Enumeration date Apr 19, 2006

Last updated in NPPES Jun 15, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License M7520 (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
88D049	Other	TX	BCBS
189340604	Medicaid	TX	-
189340603	Medicaid	TX	-
189340606	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

What specialty is Irma Pfister?

Irma Pfister is registered in NPPES with the primary taxonomy of Internal 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 2021-06-15.