William Defazio, PA-C
NPI 1184819807 · Medical Physician Assistant · Sacramento, CA
William Defazio, PA-C is a Medical Physician Assistant provider in Sacramento, CA (NPI 1184819807).
Provider details
- NPI number
- 1184819807
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA 19321 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-09-06
- Last updated
- 2007-09-06
Frequently asked questions
- What is William Defazio's NPI number?
- William Defazio's National Provider Identifier (NPI) is 1184819807, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Defazio's specialty?
- William Defazio is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Defazio located?
- William Defazio's practice location on file with NPPES is 3911 Norwood Ave, Sacramento, CA 95838-3361.
- What is William Defazio's phone number?
- The practice phone number listed in the NPPES registry for William Defazio is (916) 929-8575.
- Is William Defazio's NPI active?
- Yes — William Defazio's NPI (1184819807) is active in the NPPES registry as of the last update on 2007-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.