William Clark
Medical Physician Assistant · Prescott, AZ
William Clark is a medical physician assistant with a practice address in Prescott, Arizona, and NPI 1184362659, issued on May 24, 2022. Check the license (Arizona 9297, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Clark
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 9297 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1042 Willow Creek RD, Prescott, AZ 86301
- Phone
- (928) 379-0838
- Enumerated
- May 24, 2022
- Record last updated
- Dec 5, 2023
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 996 in Arizona → Look up another NPI →
Verify William Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 9297Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average medical physician assistant in 2024
637 Medicare Part D claims for 452 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 127 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen75 claims
- Cephalexin68 claims
- Prednisone44 claims
- Ondansetron Odt43 claims
- Cefdinir39 claims
- Amoxicillin-Clavulanate Potass32 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.
William Clark among 996 medical physician assistant records in Arizona
William Clark is one of 996 medical physician assistant records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 86% of them.
- NPI issued2022 · 86% of these records are older, 10% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2023 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 medical physician assistant records list a practice address in Prescott
They are 22 of the 1,818 NPPES records with a practice address in Prescott, and 996 medical physician assistant records in Arizona.
All 996 in Arizona → Every provider in Prescott → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Delmas Abbott, PA-CPrescott, AZ 863011437452836
- Heather Buttrum, PAPrescott, AZ 863011033738901
- Jennifer Cougill, PA-CPrescott, AZ 863011518217447
- William Duff, RPA-CPrescott, AZ 863011780603456
- Danielle Fetting, PAPrescott, AZ 863011285002931
- Denise Gallus, PAPrescott, AZ 863011720618374
- John IversonPrescott, AZ 863011467864470
- Geoffrey Lagary, PA-CPrescott, AZ 863011265491344
Common questions
What is William Clark's NPI number?
William Clark's National Provider Identifier (NPI) is 1184362659, issued on May 24, 2022. An NPI identifies a provider in billing; it is not a license.
Where is William Clark located?
The NPPES record lists a practice address at 1042 Willow Creek RD, Prescott, AZ, 86301. Phone: (928) 379-0838. Providers update this record themselves, so call before visiting.
How can I verify William Clark's license?
NPPES lists Arizona license number 9297, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does William Clark prescribe under Medicare Part D?
In 2024, William Clark had 637 Medicare Part D claims for 452 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
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.