William Hannan, MD
NPI 1265450498 · Pediatric Rheumatology Physician · Syracuse, NY
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hannan, MD is a Pediatric Rheumatology Physician provider in Syracuse, NY (NPI 1265450498).
Provider details
- NPI number
- 1265450498
- Entity type
- Individual
- Primary specialty
- Pediatric Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 159129 (NY)
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
- 2006-07-17
- Last updated
- 2014-08-13
Frequently asked questions
- What is William Hannan's NPI number?
- William Hannan's National Provider Identifier (NPI) is 1265450498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hannan's specialty?
- William Hannan is listed in the NPPES registry with a primary specialty of Pediatric Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Hannan located?
- William Hannan's practice location on file with NPPES is 750 E Adams St, Syracuse, NY 13210-2342.
- What is William Hannan's phone number?
- The practice phone number listed in the NPPES registry for William Hannan is (315) 464-5450.
- Does William Hannan accept Medicare?
- William Hannan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hannan's NPI active?
- Yes — William Hannan's NPI (1265450498) is active in the NPPES registry as of the last update on 2014-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.