Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Shey, Robbins & Mastrantonio, M.D., P.C.

Obstetrics & Gynecology Physician in Yonkers, NY · enumerated 2007 · authorized official John Mastrantonio, President.

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

National Provider Identifier

1841342896

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Registry record

Entity type Organization (Type 2)

Legal business name Shey, Robbins & Mastrantonio, M.D., P.C.

Practice address 1915 Central Park Ave # 25, Yonkers, NY, 10710

Phone (914) 961-0201

Fax (914) 961-6365

Enumeration date Jan 18, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 101929 (NY) Primary

Authorized official

Name John Mastrantonio

Title President

Phone (914) 961-0201

Other identifiers

Identifier	Type	State	Issuer
4359A	Other	NY	MAGNACARE (YONKERS)
966031	Other	NY	EMPIRE HEALTH CHOICE
1002168	Other	NY	UNITED HEALTH CARE
WS389	Other	NY	OXFORD
00750076	Other	NY	GHI
0H0577	Other	NY	HEALTHNET
2476578006	Other	NY	CIGNA
46767	Other	NY	GHI HMO
101929B14	Other	NY	COVENTRY
4096891	Other	NY	AETNA
4359B	Other	NY	MAGNACARE (BRONX)
101929A14	Other	NY	COVENTRY
62193178	Other	NY	MULTIPLAN
101929	Other	NY	HIP
21147	Other	NY	CMO
966031	Other	NY	EMPIRE BCBS
0530998	Other	NY	AETNA USHC

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

Where is Shey, Robbins & Mastrantonio, M.D., P.C. located?

The practice location on file with NPPES is in Yonkers, NY.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.