Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Michael J. Weiss, PH.D.
Psychologist in Fairfield, CT · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528366689
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Registry record
Entity type Individual (Type 1)
Name Dr. Michael J. Weiss
Credential PH.D.
Sex Male
Practice address 333 Bennett St, Fairfield, CT, 06825
Phone (203) 540-5186
Enumeration date Mar 14, 2011
Last updated in NPPES Mar 13, 2013
Taxonomy & licenses
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 4835 (MA) Secondary
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 4835 (MA) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 4835 (MA) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TH0004X Health Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TM1800X Intellectual & Developmental Disabilities Psychologist Behavioral Health & Social Service Providers · License 4835 (MA) Secondary
103TM1800X Intellectual & Developmental Disabilities Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TP2701X Group Psychotherapy Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TR0400X Rehabilitation Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 4835 (MA) Secondary
103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 003214 (CT) Secondary
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 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 Weiss?
Michael Weiss is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-13.