Gregory Ouellet, MD
NPI 1851666085 · Geriatric Medicine (Internal Medicine) Physician · New Haven, CT
Gregory Ouellet, MD is a Geriatric Medicine (Internal Medicine) Physician provider in New Haven, CT (NPI 1851666085).
Provider details
- NPI number
- 1851666085
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 20 York StT-209New Haven, CT 06510-3220Phone: (203) 688-5555Fax: (203) 688-4516
Registry dates
- Enumerated
- 2012-03-21
- Last updated
- 2018-07-11
Frequently asked questions
- What is Gregory Ouellet's NPI number?
- Gregory Ouellet's National Provider Identifier (NPI) is 1851666085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ouellet's specialty?
- Gregory Ouellet is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Ouellet located?
- Gregory Ouellet's practice location on file with NPPES is 874 Howard Ave, New Haven, CT 06519.
- What is Gregory Ouellet's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ouellet is (203) 688-9423.
- Is Gregory Ouellet's NPI active?
- Yes — Gregory Ouellet's NPI (1851666085) is active in the NPPES registry as of the last update on 2018-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.