Ernest James Fox, PA
Physician Assistant · Tucson, AZ
Ernest James Fox, PA is a physician assistant with a practice address in Tucson, Arizona, and NPI 1104809854, issued on Nov 28, 2005. Check the license with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ernest James Fox
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 5910 N LA Cholla Blvd, Tucson, AZ 85741
- Phone
- (520) 297-0404
- Enumerated
- Nov 28, 2005
- Record last updated
- Sep 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (520) 297-0436
- Medicaid ID
- 222338 AZ
- Medicare enrollment
- Enrolled (PECOS I20070515000153); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,666 in Arizona → Look up another NPI →
Also registered at 5910 N LA Cholla Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ernest James Fox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.4 times the Medicare Part D claims of the average physician assistant in 2024
6,136 Medicare Part D claims for 593 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Atorvastatin Calcium448 claims
- Ozempic383 claims
- Metformin Hcl342 claims
- Lantus Solostar326 claims
- Nano 2nd Gen Pen Needle251 claims
- Levothyroxine Sodium238 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $67.43
4 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tucson Endocrine Associates PLLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ernest James Fox among 3,666 physician assistant records in Arizona
Ernest James Fox, PA is one of 3,666 physician assistant records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2000 · median 2018 among the 2,207 with a school on file
- Record last updated2021 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
284 physician assistant records list a practice address in Tucson
They are 284 of the 18,788 NPPES records with a practice address in Tucson, and 3,666 physician assistant records in Arizona.
All 3,666 in Arizona → Every provider in Tucson → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kathleen Altman, PACTucson, AZ 857411912932096
- Renee Corrigan, P.A.-C.Tucson, AZ 857411780649913
- Anne Elliott, PATucson, AZ 857411003864141
- Nancy Favata, PATucson, AZ 857411790743409
- Christy Hall, PA-CTucson, AZ 857411356478424
- Kenneth Judkins, PA-CTucson, AZ 857411538165477
- Sandra Kunzman, PA-CTucson, AZ 857411851439541
- Danielle Moser, PA-CTucson, AZ 857411508993155
Common questions
What is Ernest James Fox, PA's NPI number?
Ernest James Fox, PA's National Provider Identifier (NPI) is 1104809854, issued on Nov 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ernest James Fox, PA located?
The NPPES record lists a practice address at 5910 N LA Cholla Blvd, Tucson, AZ, 85741. Phone: (520) 297-0404. Providers update this record themselves, so call before visiting.
How can I verify Ernest James Fox, PA's license?
Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Ernest James Fox, PA prescribe under Medicare Part D?
In 2024, Ernest James Fox, PA had 6,136 Medicare Part D claims for 593 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Ernest James Fox, PA's MIPS final score?
The 2023 MIPS final score is 98.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.