Gail Sullivan, MD
NPI 1477550721 · Geriatric Medicine (Internal Medicine) Physician · Farmington, CT
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gail Sullivan, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Farmington, CT (NPI 1477550721).
Provider details
- NPI number
- 1477550721
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 021426 (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
20 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
46 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $188 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 19 | $17 |
Typical Medicare-allowed amounts for these services range $17–$188 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 46 | 12 |
| Levothyroxine Sodium | 28 | — |
| Alendronate Sodium | 27 | — |
| Amlodipine Besylate | 20 | — |
| Oxycodone Hcl | 17 | — |
| Diclofenac Sodium | 16 | — |
| Hydrochlorothiazide | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-01
- Last updated
- 2022-09-26
Frequently asked questions
- What is Gail Sullivan's NPI number?
- Gail Sullivan's National Provider Identifier (NPI) is 1477550721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gail Sullivan's specialty?
- Gail Sullivan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gail Sullivan located?
- Gail Sullivan's practice location on file with NPPES is 263 Farmington Ave, Farmington, CT 06030-0001.
- What is Gail Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Gail Sullivan is (860) 679-8400.
- Does Gail Sullivan accept Medicare?
- Gail Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gail Sullivan's NPI active?
- Yes — Gail Sullivan's NPI (1477550721) is active in the NPPES registry as of the last update on 2022-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.