Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Alexsandra Prawak-Pasieka, M.D.

Internal Medicine Physician in Buffalo, NY · enumerated 2006.

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

National Provider Identifier

1225145485

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Registry record

Entity type Individual (Type 1)

Name Alexsandra Prawak-Pasieka

Credential M.D.

Sex Female

Practice address Buffalo, NY, 14211

Phone (716) 891-9444

Fax (716) 891-9445

Enumeration date Aug 24, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 117792 (NY) 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
000506436001	Other	NY	BLUE CROSS OF WNY
00632384	Medicaid	NY	-
00010141101	Other	NY	UNIVERA

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

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 Alexsandra Prawak-Pasieka?

Alexsandra Prawak-Pasieka 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.