NPPES file of Aug 9, 2026

Justin Clark, PA-C

Physician Assistant · Phoenix, AZ

Justin Clark, PA-C is a physician assistant with a practice address in Phoenix, Arizona, and NPI 1801493226, issued on Oct 8, 2020. Check the license (Arizona 9159, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801493226
Name
Justin Clark
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
9159 AZ
Self-reported in NPPES; status is on the state search
Practice location
645 E Missouri Ave Ste 300, Phoenix, AZ 85012
Phone
(480) 500-2545
Enumerated
Oct 8, 2020
Record last updated
Jun 25, 2026
Medicare enrollment
Enrolled (PECOS I20260310000737); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 645 E Missouri Ave Ste 300

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brittany Aeschlimann, M.D.Pain Medicine (Anesthesiology) Physician1144682659
  2. Amalia Aleck, M.D.Anesthesiology Physician1467763284
  3. Jeanmarie Altieri, CRNACertified Registered Nurse Anesthetist1033214408
  4. Sean Barney, PA-CPhysician Assistant1629304332
  5. Carly Bass, RNRegistered Nurse1144749946
  6. Nicholas Baumler, D.O.Anesthesiology Physician1659542660

Verify Justin Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license 9159
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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53% fewer Medicare Part D claims than the average physician assistant in 2024

393 Medicare Part D claims for 228 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 43 claims were for opioids.

  1. Justin Clark393
  2. Specialty average830

Most prescribed

  1. Cefdinir39 claims
  2. Cephalexin27 claims
  3. Ondansetron Hcl27 claims
  4. Amoxicillin-Clavulanate Potass24 claims
  5. Prednisone24 claims
  6. Oxycodone-Acetaminophen20 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.

Industry payments in 2024: $17.54

1 payment: food and beverage; the largest payer was Rare Disease Therapeutics, 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.

  1. Justin Clark$17.54
  2. Specialty average$841.65

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

  1. Emergency Medicine Physicians OF Craven County PLLCNew Bern, NC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Justin Clark among 3,666 physician assistant records in Arizona

Justin Clark, PA-C 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 2020, is newer than 59% of them.

  • NPI issued2020 · 59% of these records are older, 36% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2022 · median 2018 among the 2,207 with a school on file
  • Record last updated2026 · 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).

923 physician assistant records list a practice address in Phoenix

They are 923 of the 31,399 NPPES records with a practice address in Phoenix, and 3,666 physician assistant records in Arizona.

The 8 physician assistant records with the nearest ZIP codes

  1. Sean Barney, PA-CPhoenix, AZ 850121629304332
  2. Jack Deleonardo, PACPhoenix, AZ 850121417068248
  3. Laura Fox, PA-CPhoenix, AZ 850121215285051
  4. Sherri Grondon, PAPhoenix, AZ 850121588784920
  5. Katherine Haworth, PA-CPhoenix, AZ 850121265573810
  6. Nicole Jorgenson, PA-CPhoenix, AZ 850121972780807
  7. Anthony Kelly, PAPhoenix, AZ 850121245286913
  8. Lisa Kilgore-Christensen, PA-CPhoenix, AZ 850121487613873

Common questions

What is Justin Clark, PA-C's NPI number?

Justin Clark, PA-C's National Provider Identifier (NPI) is 1801493226, issued on Oct 8, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Justin Clark, PA-C located?

The NPPES record lists a practice address at 645 E Missouri Ave Ste 300, Phoenix, AZ, 85012. Phone: (480) 500-2545. Providers update this record themselves, so call before visiting.

How can I verify Justin Clark, PA-C's license?

NPPES lists Arizona license number 9159, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Justin Clark, PA-C prescribe under Medicare Part D?

In 2024, Justin Clark, PA-C had 393 Medicare Part D claims for 228 beneficiaries; the average among physician assistant prescribers was 830. 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.