John Garrison, M.D.
NPI 1932189222 · Anesthesiology Physician · Shelton, CT
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Garrison, M.D. is a Anesthesiology Physician provider in Shelton, CT (NPI 1932189222).
Provider details
- NPI number
- 1932189222
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 033002 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% 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)
- 282 Washington StHartford, CT 06106-3322Phone: (860) 545-9520
Registry dates
- Enumerated
- 2006-01-20
- Last updated
- 2023-08-23
- Certified
- 2023-08-23
Frequently asked questions
- What is John Garrison's NPI number?
- John Garrison's National Provider Identifier (NPI) is 1932189222, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Garrison's specialty?
- John Garrison is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Garrison located?
- John Garrison's practice location on file with NPPES is 2 Trap Falls Road, Shelton, CT 06484-7353.
- What is John Garrison's phone number?
- The practice phone number listed in the NPPES registry for John Garrison is (203) 929-7353.
- Does John Garrison accept Medicare?
- John Garrison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Garrison's NPI active?
- Yes — John Garrison's NPI (1932189222) is active in the NPPES registry as of the last update on 2023-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.