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Gretchen Diefenbach, PHD
NPI 1154337939 · Clinical Psychologist · Hartford, CT
Gretchen Diefenbach, PHD is a Clinical Psychologist provider in Hartford, CT (NPI 1154337939).
Provider details
- NPI number
- 1154337939
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- 002370 (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
200 Retreat Avenue
Hartford Hospital Anxiety Disorders Center
Hartford, CT 06106
Phone: (860) 545-7685
Street-level locationGet directions
Mailing address
Po Box 40,000 Dept 634
Hartford, CT 06151-0634
Registry dates
- Enumerated
- 2006-07-31
- Last updated
- 2008-02-21
Frequently asked questions
- What is Gretchen Diefenbach's NPI number?
- Gretchen Diefenbach's National Provider Identifier (NPI) is 1154337939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Diefenbach's specialty?
- Gretchen Diefenbach is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gretchen Diefenbach located?
- Gretchen Diefenbach's practice location on file with NPPES is 200 Retreat Avenue, Hartford, CT 06106.
- What is Gretchen Diefenbach's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Diefenbach is (860) 545-7685.
- Is Gretchen Diefenbach's NPI active?
- Yes — Gretchen Diefenbach's NPI (1154337939) is active in the NPPES registry as of the last update on 2008-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.