William K. Mayfield, MD
Obstetrics & Gynecology Physician · Vincennes, IN
William K. Mayfield, MD is an obstetrics & gynecology physician with a practice address in Vincennes, Indiana, and NPI 1619974284, issued on Jun 28, 2005. Check the license (Indiana 01036429A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- William K. Mayfield
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 01036429A IN
Self-reported in NPPES; status is on the state search - Practice location
- 700 Willow St Ste 203, Vincennes, IN 47591
- Phone
- (812) 882-1000
- Enumerated
- Jun 28, 2005
- Record last updated
- Apr 8, 2025
- Fax
- (812) 885-1004
- Medicaid ID
- 200040760A IN
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 894 in Indiana → Look up another NPI →
Also registered at 700 Willow St Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dustin Blackwell, DOObstetrics Physician1841682374
- Sarah Morrison, FNPFamily Nurse Practitioner1124736897
- Thomas O'Rourke, M.D.Obstetrics Physician1245292341
Verify William K. Mayfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01036429ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
62 Medicare Part D claims for 24 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Estradiol21 claims
- Osphena11 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.33
1 payment: food and beverage; the largest payer was Shield Therapeutics Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William K. Mayfield among 894 obstetrics & gynecology physician records in Indiana
William K. Mayfield, MD is one of 894 obstetrics & gynecology physician records with a practice address in Indiana. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 80% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Indiana
There are 894 obstetrics & gynecology physician records in Indiana.
All 894 in Indiana → Every provider in Vincennes → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Shalin Arnett, D.O.Vincennes, IN 475911346450053
- Eddie Kemper, MDTell City, IN 475861932170602
- Jeffrey Bohling, M.D.Newburgh, IN 476301659377380
- Marcia Cave, MDNewburgh, IN 476301962401646
- Michael Dukes, M.D.Newburgh, IN 476301730186339
- Frank Hilton, M.D.Newburgh, IN 476301457354938
- Marshall Howell, MDNewburgh, IN 476301164421848
- Otho Lackey, M.D.Newburgh, IN 476301710980073
Common questions
What is William K. Mayfield, MD's NPI number?
William K. Mayfield, MD's National Provider Identifier (NPI) is 1619974284, issued on Jun 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William K. Mayfield, MD located?
The NPPES record lists a practice address at 700 Willow St Ste 203, Vincennes, IN, 47591. Phone: (812) 882-1000. Providers update this record themselves, so call before visiting.
How can I verify William K. Mayfield, MD's license?
NPPES lists Indiana license number 01036429A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William K. Mayfield, MD prescribe under Medicare Part D?
In 2024, William K. Mayfield, MD had 62 Medicare Part D claims for 24 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is William K. Mayfield, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.