John Toksoy, M. D.
NPI 1396773511 · Internal Medicine Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Toksoy, M. D. is a Internal Medicine Physician provider in New Haven, CT (NPI 1396773511).
Provider details
- NPI number
- 1396773511
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D.
- Sex
- Male
- Sole proprietor
- No
- License
- 038460 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 394 | 134 |
| Losartan Potassium | 387 | 123 |
| Amlodipine Besylate | 291 | 92 |
| Simvastatin | 228 | 66 |
| Rosuvastatin Calcium | 208 | 68 |
| Levothyroxine Sodium | 163 | 54 |
| Hydrochlorothiazide | 162 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2011-02-25
Frequently asked questions
- What is John Toksoy's NPI number?
- John Toksoy's National Provider Identifier (NPI) is 1396773511, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Toksoy's specialty?
- John Toksoy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Toksoy located?
- John Toksoy's practice location on file with NPPES is 55 Lock Street, New Haven, CT 06520-8237.
- What is John Toksoy's phone number?
- The practice phone number listed in the NPPES registry for John Toksoy is (203) 432-0076.
- Does John Toksoy accept Medicare?
- John Toksoy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Toksoy's NPI active?
- Yes — John Toksoy's NPI (1396773511) is active in the NPPES registry as of the last update on 2011-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.