William Pfeiffer, MD
NPI 1447345707 · Pediatrics Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Pfeiffer, MD is a Pediatrics Physician provider in Honolulu, HI (NPI 1447345707).
Provider details
- NPI number
- 1447345707
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD-7467 (HI)
Specialties & taxonomies
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
- 2006-10-04
- Last updated
- 2021-11-29
Frequently asked questions
- What is William Pfeiffer's NPI number?
- William Pfeiffer's National Provider Identifier (NPI) is 1447345707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Pfeiffer's specialty?
- William Pfeiffer is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Pfeiffer located?
- William Pfeiffer's practice location on file with NPPES is 1010 Pensacola St, Honolulu, HI 96814-2118.
- What is William Pfeiffer's phone number?
- The practice phone number listed in the NPPES registry for William Pfeiffer is (808) 432-2000.
- Does William Pfeiffer accept Medicare?
- William Pfeiffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Pfeiffer's NPI active?
- Yes — William Pfeiffer's NPI (1447345707) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.