NPPES file of Aug 9, 2026

Mark Stanley Mayfield, MD

Family Medicine Physician · Oklahoma City, OK

Mark Stanley Mayfield, MD is a family medicine physician with a practice address in Oklahoma City, Oklahoma, and NPI 1376567081, issued on Jul 26, 2006. Check the license (Oklahoma 38659, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; 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
1376567081
Name
Mark Stanley Mayfield
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
38659 OK
H4022 TX
Self-reported in NPPES; status is on the state search
Practice location
4629 NW 23RD St, Oklahoma City, OK 73127
Phone
(405) 251-8880
Enumerated
Jul 26, 2006
Record last updated
May 23, 2025
Fax
(405) 665-7024
Medicaid IDs
201015480A OK
129384708 TX
129384706 TX
129384707 TX
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 4629 NW 23RD St

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

  1. Charlyce Davis, MDInternal Medicine Physician1144360256
  2. Kevin Epperson, M.D.Family Medicine Physician1063705416
  3. Andria Medina, MDInternal Medicine Physician1598059701
  4. Bich-Thy Ngo, MDGeriatric Medicine (Internal Medicine) Physician1174715932
  5. Laura O'Hara, MS, RD, LDRegistered Dietitian1922645357
  6. Rebecca Poe, APRN CNPFamily Nurse Practitioner1851732036

Verify Mark Stanley Mayfield in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
    Search for license 38659
    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 Oklahoma 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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90% fewer Medicare Part D claims than the average family medicine physician in 2024

368 Medicare Part D claims for 124 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Mark Mayfield368
  2. Specialty average3,544

Most prescribed

  1. Gabapentin25 claims
  2. Amlodipine Besylate12 claims
  3. Atorvastatin Calcium11 claims
  4. Lisinopril11 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.

Mark Stanley Mayfield among 2,303 family medicine physician records in Oklahoma

Mark Stanley Mayfield, MD is one of 2,303 family medicine physician records with a practice address in Oklahoma. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 53% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

478 family medicine physician records list a practice address in Oklahoma City

They are 478 of the 22,359 NPPES records with a practice address in Oklahoma City, and 2,303 family medicine physician records in Oklahoma.

The 8 family medicine physician records with the nearest ZIP codes

  1. Kevin Epperson, M.D.Oklahoma City, OK 731271063705416
  2. Brooke Frantz, MDOklahoma City, OK 731271912497470
  3. Tyler Freeman, M.D.Oklahoma City, OK 731271376993659
  4. Zane Harvey, M.D.Oklahoma City, OK 731271609099803
  5. Kristen Jordan, MDOklahoma City, OK 731271699069906
  6. Patrick Lo, DOOklahoma City, OK 731271295742039
  7. Kenneth Smith, M.D.Oklahoma City, OK 731271972528396
  8. Rachel Diaz, DOOklahoma City, OK 731281326614918

Common questions

What is Mark Stanley Mayfield, MD's NPI number?

Mark Stanley Mayfield, MD's National Provider Identifier (NPI) is 1376567081, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Stanley Mayfield, MD located?

The NPPES record lists a practice address at 4629 NW 23RD St, Oklahoma City, OK, 73127. Phone: (405) 251-8880. Providers update this record themselves, so call before visiting.

How can I verify Mark Stanley Mayfield, MD's license?

NPPES lists Oklahoma license number 38659, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark Stanley Mayfield, MD prescribe under Medicare Part D?

In 2024, Mark Stanley Mayfield, MD had 368 Medicare Part D claims for 124 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.