John Nastasi
NPI 1487117594 · Surgical Physician Assistant · Fullerton, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Nastasi is a Surgical Physician Assistant provider in Fullerton, CA (NPI 1487117594).
Provider details
- NPI number
- 1487117594
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 56355 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2019-04-08
- Last updated
- 2021-12-01
- Certified
- 2021-12-01
Frequently asked questions
- What is John Nastasi's NPI number?
- John Nastasi's National Provider Identifier (NPI) is 1487117594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Nastasi's specialty?
- John Nastasi is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Nastasi located?
- John Nastasi's practice location on file with NPPES is 100 W Valencia Mesa Dr # 211, Fullerton, CA 92835-3768.
- What is John Nastasi's phone number?
- The practice phone number listed in the NPPES registry for John Nastasi is (714) 778-1032.
- Does John Nastasi accept Medicare?
- John Nastasi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Nastasi's NPI active?
- Yes — John Nastasi's NPI (1487117594) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.