IndividualActive
Mark Gang, PHD
NPI 1588684427 · Psychologist · Fairfield, CT
Mark Gang, PHD is a Psychologist provider in Fairfield, CT (NPI 1588684427).
Provider details
- NPI number
- 1588684427
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 562 (CT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(91/100 index)
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
2228 Black Rock Tpke
Suite 310
Fairfield, CT 06825-3237
Phone: (203) 336-4264
Fax: (203) 336-4265
Street-level locationGet directions
Mailing address
2228 Black Rock Tpke
Fairfield, CT 06825-3237
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Gang's NPI number?
- Mark Gang's National Provider Identifier (NPI) is 1588684427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gang's specialty?
- Mark Gang is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Gang located?
- Mark Gang's practice location on file with NPPES is 2228 Black Rock Tpke, Fairfield, CT 06825-3237.
- What is Mark Gang's phone number?
- The practice phone number listed in the NPPES registry for Mark Gang is (203) 336-4264.
- Is Mark Gang's NPI active?
- Yes — Mark Gang's NPI (1588684427) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.