Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Masha Maslennikov, WHNP-BC

Women's Health Nurse Practitioner in Suffern, NY · enumerated 2019.

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

National Provider Identifier

1265994693

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Registry record

Entity type Individual (Type 1)

Name Masha Maslennikov

Credential WHNP-BC

Sex Female

Practice address 257 Lafayette Ave Ste 380, Suffern, NY, 10901

Phone (845) 777-3569

Fax (845) 533-7464

Enumeration date Apr 4, 2019

Last updated in NPPES Apr 14, 2023

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209019111 (IL) Secondary

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 421474 (NY) Primary

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 Masha Maslennikov practice?

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

What is the NPI number for Masha Maslennikov?

The National Provider Identifier (NPI) for Masha Maslennikov is 1265994693, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-14.