William Fox Jr
NPI 1427542927 · Adult Health Nurse Practitioner · Litchfield Park, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Fox Jr is a Adult Health Nurse Practitioner provider in Litchfield Park, AZ (NPI 1427542927).
Provider details
- NPI number
- 1427542927
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- AP11408 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 17 |
| Atorvastatin Calcium | 16 |
| Levothyroxine Sodium | 15 |
| Lisinopril | 15 |
| Omeprazole | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 9520 W Palm LnPhoenix, AZ 85037-4403Phone: (480) 443-8400
Registry dates
- Enumerated
- 2018-06-18
- Last updated
- 2023-12-18
- Certified
- 2023-12-18
Frequently asked questions
- What is William Fox Jr's NPI number?
- William Fox Jr's National Provider Identifier (NPI) is 1427542927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Fox Jr's specialty?
- William Fox Jr is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Fox Jr located?
- William Fox Jr's practice location on file with NPPES is 19590 W San Miguel Ave, Litchfield Park, AZ 85340-5422.
- What is William Fox Jr's phone number?
- The practice phone number listed in the NPPES registry for William Fox Jr is (623) 377-0825.
- Does William Fox Jr accept Medicare?
- William Fox Jr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Fox Jr's NPI active?
- Yes — William Fox Jr's NPI (1427542927) is active in the NPPES registry as of the last update on 2023-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.