Lloyd Seyler, MD
NPI 1477686327 · Internal Medicine Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lloyd Seyler, MD is a Internal Medicine Physician provider in Hartford, CT (NPI 1477686327).
Provider details
- NPI number
- 1477686327
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 014935 (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
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-13
- Last updated
- 2018-08-30
Frequently asked questions
- What is Lloyd Seyler's NPI number?
- Lloyd Seyler's National Provider Identifier (NPI) is 1477686327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lloyd Seyler's specialty?
- Lloyd Seyler is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lloyd Seyler located?
- Lloyd Seyler's practice location on file with NPPES is 80 Seymour Street, Hartford, CT 06102.
- What is Lloyd Seyler's phone number?
- The practice phone number listed in the NPPES registry for Lloyd Seyler is (860) 545-0500.
- Does Lloyd Seyler accept Medicare?
- Lloyd Seyler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lloyd Seyler's NPI active?
- Yes — Lloyd Seyler's NPI (1477686327) is active in the NPPES registry as of the last update on 2018-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.