William Daniell
NPI 1255173019 · Physician Assistant · Phoenix, AZ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Daniell is a Physician Assistant provider in Phoenix, AZ (NPI 1255173019).
Provider details
- NPI number
- 1255173019
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 11442 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
- 2024-06-11
- Last updated
- 2025-12-11
- Certified
- 2025-12-11
Frequently asked questions
- What is William Daniell's NPI number?
- William Daniell's National Provider Identifier (NPI) is 1255173019, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Daniell's specialty?
- William Daniell is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Daniell located?
- William Daniell's practice location on file with NPPES is 18444 N 25th Ave Ste 210, Phoenix, AZ 85023-1264.
- What is William Daniell's phone number?
- The practice phone number listed in the NPPES registry for William Daniell is (866) 974-2673.
- Does William Daniell accept Medicare?
- William Daniell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Daniell's NPI active?
- Yes — William Daniell's NPI (1255173019) is active in the NPPES registry as of the last update on 2025-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.