Registry data as of Aug 27, 2026

Gregory Layton, M.D.

Obstetrics & Gynecology Physician · Mesa, AZ

Gregory Layton, M.D. is an obstetrics & gynecology physician with a practice address in Mesa, Arizona, and NPI 1104881986, issued on Apr 18, 2006. Check the license (Arizona 23687, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1104881986
Name
Gregory Layton
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
23687 AZ
Self-reported in NPPES; status is on the state search
Practice location
4824 E Baseline RD Ste 129, Mesa, AZ 85206
Phone
(480) 644-1001
Enumerated
Apr 18, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 4824 E Baseline RD Ste 129

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

  1. Russell Beck, M.D.Obstetrics & Gynecology Physician1578672671
  2. Eericca Bickley, D.O.Obstetrics & Gynecology Physician1023250529
  3. Thomas Bickley, D.O.Obstetrics & Gynecology Physician1639318991
  4. Cassidy Ducray, APRNObstetrics & Gynecology Nurse Practitioner1144929084
  5. Jacqueline Johnstone, CNMAdvanced Practice Midwife1528149598
  6. Kaylee Powers, APRNWomen's Health Nurse Practitioner1154110146

Verify Gregory Layton in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 23687
    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
Open 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.

94% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

11 Medicare Part D claims, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Gregory Layton11
  2. Specialty average188

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: $332.39

9 payments, mostly food and beverage; the largest payer was Stryker Corporation. The 20,757 providers of this specialty with any payment received $1,147.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Layton$332.39
  2. Specialty average$1,147.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Women's Care Arizona, LLCMesa, AZ

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Obstetrics & Gynecology Physician providers in Arizona

There are 806 obstetrics & gynecology physician records in Arizona.

Other obstetrics & gynecology physician records in Arizona

  1. Michelle Abbate, MDTucson, AZ1184111940
  2. Judith Adams, MDGilbert, AZ1457644759
  3. Julie Adams, DOChandler, AZ1285607333
  4. Karen Adams, MDPhoenix, AZ1023192333
  5. Andrew Adamson, DOMesa, AZ1124330220
  6. Elana Addis, M.DTucson, AZ1730150582
  7. Eugene Adel, M.D.Mesa, AZ1609301621
  8. Oluwatoyosi Adeoye, MDPhoenix, AZ1316679921
  9. Farshad Agahi, M.D.Phoenix, AZ1386886430
  10. Enyonam Agamasu, M.D.Mesa, AZ1295023935

Common questions

What is Gregory Layton, M.D.'s NPI number?

Gregory Layton, M.D.'s National Provider Identifier (NPI) is 1104881986, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Layton, M.D. located?

The NPPES record lists a practice address at 4824 E Baseline RD Ste 129, Mesa, AZ, 85206. Phone: (480) 644-1001. Providers update this record themselves, so call before visiting.

How can I verify Gregory Layton, M.D.'s license?

NPPES lists Arizona license number 23687, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory Layton, M.D. prescribe under Medicare Part D?

In 2024, Gregory Layton, M.D. had 11 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.