NPI Portal NPI Lookup & Verification

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

Dr. John Joseph Comcowich, PH.D.

Cognitive & Behavioral Psychologist in Rockville Centre, NY · enumerated 2009.

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

National Provider Identifier

1982837266

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Registry record

Entity type Individual (Type 1)
Name Dr. John Joseph Comcowich
Credential PH.D.
Sex Male
Practice address Rockville Centre, NY, 11570
Phone (516) 594-1157
Fax (516) 594-1157
Enumeration date Sep 2, 2009
Last updated in NPPES Sep 2, 2009

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 009303 (NY) Secondary
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 009303 (NY) 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

What specialty is John Comcowich?
John Comcowich is registered in NPPES with the primary taxonomy of Cognitive & Behavioral Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-02.