Dr. Michael A. Westerman, PHD

Dr. Michael A. Westerman is a Clinical Psychologist provider (Psychologist) practicing in Fishkill, NY, registered in the NPPES registry with NPI 1356550305 since 2007. The credential PHD stands for Doctor of Philosophy.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1356550305
Entity type	Individual (Type 1)
Name	Dr. Michael A. Westerman
Credential	PHD
Sex	Male
Practice address	Fishkill, NY, 12524
Phone	8458967787
Enumeration date	2007-05-22
Last updated in NPPES	2007-07-08

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103TC0700X	Clinical Psychologist	Primary	7161	NY

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

Copy-ready billing details

Provider: Michael Westerman, PHD
NPI: 1356550305
Taxonomy: 103TC0700X (Clinical Psychologist)
Address: Fishkill, NY, 12524

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1710191549	Marsha Shelov	Individual	Clinical Psychologist	Fishkill, NY
1821302688	Patricia Thomas	Individual	Clinical Psychologist	Fishkill, NY

Verify this record

Cross-check NPI 1356550305 against the authoritative CMS record: view Dr. Michael A. Westerman on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Westerman?

Michael Westerman is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.