DR. WILLIAM BLAINE LAPIN M.D.
NPI 1740624741
Pediatrics - Pediatric Rheumatology in Hartford, CT
About Dr. William Blaine Lapin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM BLAINE LAPIN M.D. (NPI 1740624741) is an individual pediatric rheumatology provider in Hartford, Connecticut, licensed in Connecticut (62434) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William Blaine Lapin M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show William Lapin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut and Massachusetts enrollments
- 601 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HARTFORD, CT 06106
HARTFORD, CT 06106
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Lapin's NPI number?
The NPI number for William Lapin is 1740624741. It was assigned to this individual provider in the NPPES registry on April 20, 2013.
Where is William Lapin located?
William Lapin practices at 282 Washington St, Hartford, CT 06106. The listed phone number is (860) 837-5170.
What is William Lapin's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Rheumatology, with taxonomy code 2080P0216X.
Is William Lapin enrolled in Medicare?
Yes. William Lapin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for William Lapin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Lapin reassigns Medicare benefits to Connecticut Children's Specialty Group, Inc. (Hartford, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Lapin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Lapin accept?
Health plans from Anthem Blue Cross and Blue Shield list William Lapin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Lapin was last updated on November 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. William Blaine Lapin, M.D. · NPI 1740624741
Pediatric Rheumatology physician in Hartford, Connecticut. Individual provider, active in the CMS NPPES registry since April 20, 2013.
## Identity
- **NPI:** 1740624741 (Entity type: Individual)
- **Enumerated:** April 20, 2013
- **Primary specialty:** Pediatrics - Pediatric Rheumatology · taxonomy 2080P0216X
- **State license:** 62434 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 282 WASHINGTON ST, Hartford, CT 06106-3322
- **Phone:** (860) 837-5170
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Connecticut Children's Specialty Group, Inc. (NPI 1669448882, Hartford, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** November 30, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1740624741) · Data from the CMS NPPES public registry.