Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Michael David Yammer, PH.D.

School Psychologist in Teaneck, NJ · enumerated 2007.

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

National Provider Identifier

1255543658

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael David Yammer

Credential PH.D.

Sex Male

Practice address Teaneck, NJ, 07666

Phone (201) 833-9399

Fax (201) 833-9398

Enumeration date May 6, 2007

Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 35SI00344700 (NJ) Secondary

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 35SI00344700 (NJ) Secondary

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 35SI00344700 (NJ) Secondary

103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 35SI00344700 (NJ) Secondary

103TS0200X School Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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

How do I verify Michael Yammer's NPI record?

Cross-check NPI 1255543658 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1255543658 active?

Yes, as of the latest NPPES snapshot, NPI 1255543658 is active (record last updated 2025-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.