Thomas Mcmahon, PHD
NPI 1174734438 · Clinical Child & Adolescent Psychologist · New Haven, CT
Thomas Mcmahon, PHD is a Clinical Child & Adolescent Psychologist provider in New Haven, CT (NPI 1174734438).
Provider details
- NPI number
- 1174734438
- Entity type
- Individual
- Primary specialty
- Clinical Child & Adolescent PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 001969 (CT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-25
- Last updated
- 2025-09-11
Frequently asked questions
- What is Thomas Mcmahon's NPI number?
- Thomas Mcmahon's National Provider Identifier (NPI) is 1174734438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Mcmahon's specialty?
- Thomas Mcmahon is listed in the NPPES registry with a primary specialty of Clinical Child & Adolescent Psychologist (Behavioral Health & Social Service Providers).
- Where is Thomas Mcmahon located?
- Thomas Mcmahon's practice location on file with NPPES is 34 Park St, New Haven, CT 06519.
- What is Thomas Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Thomas Mcmahon is (203) 974-7417.
- Is Thomas Mcmahon's NPI active?
- Yes — Thomas Mcmahon's NPI (1174734438) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.