Ellen Seyller, MD
NPI 1558940445 · Family Medicine Physician · Cromwell, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Seyller, MD is a Family Medicine Physician provider in Cromwell, CT (NPI 1558940445).
Provider details
- NPI number
- 1558940445
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 082545 (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
5 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 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 114 | 27 |
| Lisinopril | 67 | 19 |
| Amlodipine Besylate | 57 | 19 |
| Pantoprazole Sodium | 46 | 11 |
| Apixabanbrand: Eliquis | 40 | — |
| Gabapentin | 39 | — |
| Metoprolol Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-07
- Last updated
- 2025-11-05
- Certified
- 2025-11-05
Frequently asked questions
- What is Ellen Seyller's NPI number?
- Ellen Seyller's National Provider Identifier (NPI) is 1558940445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Seyller's specialty?
- Ellen Seyller is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Seyller located?
- Ellen Seyller's practice location on file with NPPES is 70 Shunpike Rd, Cromwell, CT 06416.
- What is Ellen Seyller's phone number?
- The practice phone number listed in the NPPES registry for Ellen Seyller is (860) 358-5280.
- Does Ellen Seyller accept Medicare?
- Ellen Seyller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Seyller's NPI active?
- Yes — Ellen Seyller's NPI (1558940445) is active in the NPPES registry as of the last update on 2025-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.