Grael O'Brien, M.D.
NPI 1366454621 · Pediatric Adolescent Medicine Physician · Hartford, CT
Grael O'Brien, M.D. is a Pediatric Adolescent Medicine Physician provider in Hartford, CT (NPI 1366454621).
Provider details
- NPI number
- 1366454621
- Entity type
- Individual
- Primary specialty
- Pediatric Adolescent Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 039887 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-08-13
- Last updated
- 2013-10-02
Frequently asked questions
- What is Grael O'Brien's NPI number?
- Grael O'Brien's National Provider Identifier (NPI) is 1366454621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grael O'Brien's specialty?
- Grael O'Brien is listed in the NPPES registry with a primary specialty of Pediatric Adolescent Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Grael O'Brien located?
- Grael O'Brien's practice location on file with NPPES is 131 Coventry St, Hartford, CT 06112-1548.
- What is Grael O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Grael O'Brien is (860) 714-3690.
- Is Grael O'Brien's NPI active?
- Yes — Grael O'Brien's NPI (1366454621) is active in the NPPES registry as of the last update on 2013-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.