William Tamborlane, MD
NPI 1124001342 · Pediatric Endocrinology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Tamborlane, MD is a Pediatric Endocrinology Physician provider in New Haven, CT (NPI 1124001342).
Provider details
- NPI number
- 1124001342
- Entity type
- Individual
- Primary specialty
- Pediatric Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 017434 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$857 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-22
- Last updated
- 2026-05-24
Frequently asked questions
- What is William Tamborlane's NPI number?
- William Tamborlane's National Provider Identifier (NPI) is 1124001342, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Tamborlane's specialty?
- William Tamborlane is listed in the NPPES registry with a primary specialty of Pediatric Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is William Tamborlane located?
- William Tamborlane's practice location on file with NPPES is 2 Church St S, New Haven, CT 06519-1717.
- What is William Tamborlane's phone number?
- The practice phone number listed in the NPPES registry for William Tamborlane is (203) 764-9199.
- Does William Tamborlane accept Medicare?
- William Tamborlane is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Tamborlane's NPI active?
- Yes — William Tamborlane's NPI (1124001342) is active in the NPPES registry as of the last update on 2026-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.