William Lapin, M.D.
NPI 1740624741 · Pediatric Rheumatology Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Lapin, M.D. is a Pediatric Rheumatology Physician provider in Hartford, CT (NPI 1740624741).
Provider details
- NPI number
- 1740624741
- Entity type
- Individual
- Primary specialty
- Pediatric Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 285316-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-04-20
- Last updated
- 2022-11-30
- Certified
- 2022-11-30
Frequently asked questions
- What is William Lapin's NPI number?
- William Lapin's National Provider Identifier (NPI) is 1740624741, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lapin's specialty?
- William Lapin is listed in the NPPES registry with a primary specialty of Pediatric Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Lapin located?
- William Lapin's practice location on file with NPPES is 282 Washington St, Hartford, CT 06106-3322.
- What is William Lapin's phone number?
- The practice phone number listed in the NPPES registry for William Lapin is (860) 837-5170.
- Does William Lapin accept Medicare?
- William Lapin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Lapin's NPI active?
- Yes — William Lapin's NPI (1740624741) is active in the NPPES registry as of the last update on 2022-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.