Warren C. Hayes, M.D.
Family Medicine Physician · Red Oak, IA
Warren C. Hayes, M.D. is a family medicine physician with a practice address in Red Oak, Iowa, and NPI 1932215274, issued on Aug 21, 2006. Check the license (Iowa 28321, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Warren C. Hayes
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 28321 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Senate Ave, Red Oak, IA 51566
- Phone
- (712) 623-7250
- Enumerated
- Aug 21, 2006
- Record last updated
- Feb 9, 2024
- Fax
- (712) 623-7257
- Medicaid IDs
- 47068731710 NE
1932215274 IA - Medicare enrollment
- Enrolled (PECOS I20050419001076); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1990
- Entity
- Type 1 · individual
Also registered at 1400 Senate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claudia Balta, P.A.Physician Assistant1003153636
- Eduard Grass Garcia, MDSurgery Physician1679729479
- Peggy Hayes, PHARMD, RP.Pharmacist1386806263
- Melanne Hilderbrand, DPTPhysical Therapist1609257518
- Christopher Johnson, MD OBGYNObstetrics & Gynecology Physician1508852666
- Lila Lassen, ARNPNurse Practitioner1245488543
Verify Warren C. Hayes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 28321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average family medicine physician in 2024
12,732 Medicare Part D claims for 503 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 359 claims were for opioids.
Most prescribed
- Levothyroxine Sodium831 claims
- Losartan Potassium831 claims
- Atorvastatin Calcium812 claims
- Amlodipine Besylate667 claims
- Pantoprazole Sodium451 claims
- Metoprolol Succinate348 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: $20.08
1 payment: food and beverage; the largest payer was Sanofi Pasteur Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
One hospital affiliation
- Montgomery County Memorial HospitalRed Oak, IA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
6 family medicine physician records list a practice address in Red Oak
They are 6 of the 112 NPPES records with a practice address in Red Oak, and 2,336 family medicine physician records in Iowa.
All 6 in Red Oak → All 2,336 in Iowa → Every provider in Red Oak →
Other family medicine physician records in Iowa
- Jennifer Aanestad, M.D.Durant, IA1386649341
- Amjad Abdelhady, MDSioux City, IA1033966700
- Afsana Abdullah, D.O.Bettendorf, IA1760583066
- Raja Ali Abdullah, MDCedar Falls, IA1356101000
- Laura Abels, DOAnkeny, IA1427313527
- Matthew AbendrothDes Moines, IA1972918894
- Mabra Abernathy, M.D.Coralville, IA1316922545
- Jennifer Abler, D.O.Altoona, IA1528159068
- Michael Abouassaly, M.D.West Burlington, IA1184790909
- Safa Abukhalil, M.B.B.SWest Des Moines, IA1982084463
Common questions
What is Warren C. Hayes, M.D.'s NPI number?
Warren C. Hayes, M.D.'s National Provider Identifier (NPI) is 1932215274, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren C. Hayes, M.D. located?
The NPPES record lists a practice address at 1400 Senate Ave, Red Oak, IA, 51566. Phone: (712) 623-7250. Providers update this record themselves, so call before visiting.
How can I verify Warren C. Hayes, M.D.'s license?
NPPES lists Iowa license number 28321, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Warren C. Hayes, M.D. prescribe under Medicare Part D?
In 2024, Warren C. Hayes, M.D. had 12,732 Medicare Part D claims for 503 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.