Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary E. Mendelsohn, MD

Ophthalmology Physician in Woodcliff Lake, NJ · enumerated 2006.

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

National Provider Identifier

1720161888

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Registry record

Entity type Individual (Type 1)

Name Mary E. Mendelsohn

Credential MD

Sex Female

Practice address 577 Chestnut Ridge Rd, Woodcliff Lake, NJ, 07677

Phone (201) 782-1700

Fax (201) 782-1749

Enumeration date Oct 23, 2006

Last updated in NPPES Apr 1, 2014

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 25MA06492200 (NJ) 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
1463637	Other	GA	UNITED HEALTHCARE
5329298	Other	TX	AETNA
7114788	Other	TN	CIGNA
P418296	Other	CT	OXFORD

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 is the NPI number for Mary Mendelsohn?

The National Provider Identifier (NPI) for Mary Mendelsohn is 1720161888, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Mendelsohn practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-01.