Terrence Doherty, MD
NPI 1255435558 · Family Medicine Physician · Old Lyme, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terrence Doherty, MD is a Family Medicine Physician provider in Old Lyme, CT (NPI 1255435558).
Provider details
- NPI number
- 1255435558
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 029476 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,004 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 212 | $139 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 211 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 184 | $98 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 98 | $9 |
| Administration of Influenza Virus VaccineG0008 | 94 | $34 |
| Hemoglobin A1c Level83036 | 85 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 134 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 620 | 159 |
| Amlodipine Besylate | 589 | 162 |
| Losartan Potassium | 374 | 104 |
| Lisinopril | 313 | 81 |
| Alprazolam | 312 | 69 |
| Rosuvastatin Calcium | 296 | 87 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2017-12-08
Frequently asked questions
- What is Terrence Doherty's NPI number?
- Terrence Doherty's National Provider Identifier (NPI) is 1255435558, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terrence Doherty's specialty?
- Terrence Doherty is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Terrence Doherty located?
- Terrence Doherty's practice location on file with NPPES is 19 Halls Rd, Old Lyme, CT 06371-1457.
- What is Terrence Doherty's phone number?
- The practice phone number listed in the NPPES registry for Terrence Doherty is (860) 434-8300.
- Does Terrence Doherty accept Medicare?
- Terrence Doherty is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terrence Doherty's NPI active?
- Yes — Terrence Doherty's NPI (1255435558) is active in the NPPES registry as of the last update on 2017-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.