Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Mark Kowalski, PHD
Psychologist in Guilderland, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316045727
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Registry record
Entity type Individual (Type 1)
Name Dr. John Mark Kowalski
Credential PHD
Sex Male
Practice address 2280 Western Ave, Guilderland, NY, 12084
Phone (518) 456-5056
Fax (518) 456-6512
Enumeration date Sep 20, 2006
Last updated in NPPES Jul 10, 2007
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 015576-1 (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.
Frequently asked questions
Is NPI 1316045727 active?
Yes, as of the latest NPPES snapshot, NPI 1316045727 is active (record last updated 2007-07-10).
How do I verify John Kowalski's NPI record?
Cross-check NPI 1316045727 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Julie Lloyd Social Worker · Guilderland, NY NPI 1437138880 Karner Psychological Associates PC Psychologist · Guilderland, NY NPI 1619913258 Joan Stapleton Social Worker · Guilderland, NY NPI 1699705186 William Knauer Social Worker · Guilderland, NY NPI 1881616811 W Mooney Psychologist · Guilderland, NY NPI 1790883247 Stephen Phelps Psychologist · Guilderland, NY NPI 1851488357 June Morier Social Worker · Guilderland, NY NPI 1245327758 Erin Oneill Social Worker · Guilderland, NY NPI 1902994148
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-10.