Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stanislava Portnoy, M.D.

Obstetrics & Gynecology Physician in Wellesley Hills, MA · enumerated 2005.

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

National Provider Identifier

1922098003

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Registry record

Entity type Individual (Type 1)

Name Stanislava Portnoy

Credential M.D.

Sex Female

Practice address 30 Washington St Fl 2, Wellesley Hills, MA, 02481

Phone (781) 263-9110

Fax (781) 263-9125

Enumeration date Oct 28, 2005

Last updated in NPPES Apr 9, 2025

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 221753 (MA) 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
2085062	Medicaid	MA	-

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 does Stanislava Portnoy practice?

The practice location on file with NPPES is in Wellesley Hills, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stanislava Portnoy?

The National Provider Identifier (NPI) for Stanislava Portnoy is 1922098003, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-09.