William Diez, PA-C
NPI 1780054858 · Physician Assistant · Redlands, CA
William Diez, PA-C is a Physician Assistant provider in Redlands, CA (NPI 1780054858).
Provider details
- NPI number
- 1780054858
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Medical Physician Assistant363AM0700X
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
10 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2015-10-01
- Last updated
- 2022-09-28
- Certified
- 2022-09-28
Frequently asked questions
- What is William Diez's NPI number?
- William Diez's National Provider Identifier (NPI) is 1780054858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Diez's specialty?
- William Diez is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Diez located?
- William Diez's practice location on file with NPPES is 330 Alabama St Ste D, Redlands, CA 92373-8097.
- What is William Diez's phone number?
- The practice phone number listed in the NPPES registry for William Diez is (855) 901-0911.
- Is William Diez's NPI active?
- Yes — William Diez's NPI (1780054858) is active in the NPPES registry as of the last update on 2022-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.