Donald Thomas Hay, D.O.
Family Medicine Physician · Darlington, WI
Donald Thomas Hay, D.O. is a family medicine physician with a practice address in Darlington, Wisconsin, and NPI 1326040098, issued on Aug 12, 2005. Check the license (Wisconsin 72308, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Donald Thomas Hay
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 72308 WI
K8203 TX
Self-reported in NPPES; status is on the state search - Practice location
- 731 Clay St, Darlington, WI 53530
- Phone
- (608) 776-4497
- Enumerated
- Aug 12, 2005
- Record last updated
- Feb 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (608) 776-2317
- Medicaid ID
- 036099400 IL
- Medicare enrollment
- Enrolled (PECOS I20200124001588); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Med & Biosciences, College Of Osteo Med, 1996
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 731 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail Argall, APSWSocial Worker1689450876
- Robert Bernardoni, M. D.Family Medicine Physician1861417610
- Martin Cleary, MDFamily Medicine Physician1104890482
- Cheyanne Kubatzke, PA-CPhysician Assistant1932578333
- Lori Neumann, M. DFamily Medicine Physician1972522043
- Michelle Reisen-Garvey, PAPhysician Assistant1821002049
Verify Donald Thomas Hay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 72308Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average family medicine physician in 2024
2,895 Medicare Part D claims for 213 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 73 claims were for opioids.
Most prescribed
- Atorvastatin Calcium170 claims
- Eliquis103 claims
- Losartan Potassium81 claims
- Lisinopril76 claims
- Rosuvastatin Calcium76 claims
- Omeprazole75 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: $36.05
2 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.
Bills Medicare through one group practice
- Lafayette CountyDarlington, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald Thomas Hay among 3,765 family medicine physician records in Wisconsin
Donald Thomas Hay, D.O. is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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, 90% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2007 among the 2,347 with a school on file
- Record last updated2020 · 56% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Darlington
They are 8 of the 86 NPPES records with a practice address in Darlington, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Darlington → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Robert Bernardoni, M. D.Darlington, WI 535301861417610
- Martin Cleary, MDDarlington, WI 535301104890482
- Lori Neumann, M. DDarlington, WI 535301972522043
- Michael Robiolio, M. D.Darlington, WI 535301679592745
- Michele Roelli, MDDarlington, WI 535301790770550
- Nicolas Sanhueza Castillo, M.D.Darlington, WI 535301770017048
- Matthew Solverson, M.D.Darlington, WI 535301154300507
- Jennifer Stevens, MDDeerfield, WI 535311962457531
Common questions
What is Donald Thomas Hay, D.O.'s NPI number?
Donald Thomas Hay, D.O.'s National Provider Identifier (NPI) is 1326040098, issued on Aug 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Donald Thomas Hay, D.O. located?
The NPPES record lists a practice address at 731 Clay St, Darlington, WI, 53530. Phone: (608) 776-4497. Providers update this record themselves, so call before visiting.
How can I verify Donald Thomas Hay, D.O.'s license?
NPPES lists Wisconsin license number 72308, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donald Thomas Hay, D.O. prescribe under Medicare Part D?
In 2024, Donald Thomas Hay, D.O. had 2,895 Medicare Part D claims for 213 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.