Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Anne M Rivera, MS PA

Physician Assistant in Chatham, NJ · enumerated 2006.

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

National Provider Identifier

1861509390

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Registry record

Entity type Individual (Type 1)

Name Mary Anne M Rivera

Credential MS PA

Sex Female

Practice address 40 Main St, Chatham, NJ, 07928

Phone (973) 635-0800

Enumeration date Aug 23, 2006

Last updated in NPPES Dec 13, 2016

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 25MP00129300 (NJ) 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

What is the NPI number for Mary Anne Rivera?

The National Provider Identifier (NPI) for Mary Anne Rivera is 1861509390, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Anne Rivera practice?

The practice location on file with NPPES is in Chatham, 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 2016-12-13.