NPPES file of Aug 9, 2026

Jacob Layfield

Physician Assistant · Mesa, AZ

Jacob Layfield is a physician assistant with a practice address in Mesa, Arizona, and NPI 1366105777, issued on Oct 21, 2021. Check the license 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
1366105777
Name
Jacob Layfield
Primary taxonomy
Physician Assistant 363A00000X
License numbers
62136 CA
5671883 ID
Self-reported in NPPES; status is on the state search
Practice location
5850 E Still Cir, Mesa, AZ 85206
Phone
(480) 219-6000
Enumerated
Oct 21, 2021
Record last updated
Mar 2, 2026
Medicare enrollment
Enrolled (PECOS I20251216000002); accepts Medicare assignment
Medical or professional school
At Still Un Of Hlth Sciences, Col Of Osteo Med, Mesa, 2022
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 5850 E Still Cir

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

  1. Kristen Abel, PA-CPhysician Assistant1346037181
  2. Nidal Abukhalil, PA-SPhysician Assistant1104667757
  3. Allison AdamsPhysician Assistant1790574986
  4. Alexander Aguilar, PA-CPhysician Assistant1467293563
  5. Izabelle AlasPhysician Assistant1255120499
  6. Kathryn AlayvillaMedical Physician Assistant1922732270

Verify Jacob Layfield in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck 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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64% fewer Medicare Part D claims than the average physician assistant in 2024

298 Medicare Part D claims for 182 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 32 claims were for opioids.

  1. Jacob Layfield298
  2. Specialty average830

Most prescribed

  1. Cephalexin47 claims
  2. Naproxen37 claims
  3. Prednisone21 claims
  4. Oxycodone-Acetaminophen18 claims
  5. Ondansetron Odt17 claims
  6. Cyclobenzaprine Hcl13 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.

Bills Medicare through 2 group practices

  1. Kootenai Urgent Care LLCCoeur D Alene, ID
  2. Permanente Medical Group IncFresno, CA

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

Jacob Layfield among 3,666 physician assistant records in Arizona

Jacob Layfield 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 2021, is newer than 64% of them.

  • NPI issued2021 · 64% of these records are older, 30% 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).

472 physician assistant records list a practice address in Mesa

They are 472 of the 9,151 NPPES records with a practice address in Mesa, and 3,666 physician assistant records in Arizona.

The 8 physician assistant records with the nearest ZIP codes

  1. Karen Bjorn, PAMesa, AZ 852061912920968
  2. James Burkett, PA-CMesa, AZ 852061801807334
  3. Kelly Connor, PA-CMesa, AZ 852061376669739
  4. Christopher Davis, PA-CMesa, AZ 852061659457281
  5. Loren Eberhard, PAMesa, AZ 852061225284755
  6. Jennifer Godwin, PAMesa, AZ 852061063556355
  7. Michael Jackson, P.A.Mesa, AZ 852061154394039
  8. Jillian Jackson, PAMesa, AZ 852061336246628

Common questions

What is Jacob Layfield's NPI number?

Jacob Layfield's National Provider Identifier (NPI) is 1366105777, issued on Oct 21, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Jacob Layfield located?

The NPPES record lists a practice address at 5850 E Still Cir, Mesa, AZ, 85206. Phone: (480) 219-6000. Providers update this record themselves, so call before visiting.

How can I verify Jacob Layfield's license?

Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Jacob Layfield prescribe under Medicare Part D?

In 2024, Jacob Layfield had 298 Medicare Part D claims for 182 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.