William T. Swearingen, DO
Family Medicine Physician · Mercer, WI
William T. Swearingen, DO is a family medicine physician with a practice address in Mercer, Wisconsin, and NPI 1336168236, issued on Jul 19, 2006. Check the license (Wisconsin 13210-321, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William T. Swearingen
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 13210-321 WI
3993 OK
Self-reported in NPPES; status is on the state search - Practice location
- 5110N W Hwy 51, Mercer, WI 54547
- Phone
- (888) 652-5033
- Enumerated
- Jul 19, 2006
- Record last updated
- Dec 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20040727000334); accepts Medicare assignment
- Medical or professional school
- Oklahoma State University College Of Osteopathic Medicine, 1997
- Entity
- Type 1 · individual
Verify William T. Swearingen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 13210-321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average family medicine physician in 2024
4,081 Medicare Part D claims for 312 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium249 claims
- Lisinopril191 claims
- Losartan Potassium170 claims
- Levothyroxine Sodium162 claims
- Amlodipine Besylate150 claims
- Metformin Hcl100 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): 91.2 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: $78.04
4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Bills Medicare through one group practice
- Norman Regional Providers Primary CareOklahoma City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2 family medicine physician records list a practice address in Mercer
They are 2 of the 11 NPPES records with a practice address in Mercer, and 3,765 family medicine physician records in Wisconsin.
All 2 in Mercer → All 3,765 in Wisconsin → Every provider in Mercer →
Other family medicine physician records in Wisconsin
- Ashraf AbbasAppleton, WI1558723775
- Ghudran Abdulal, MDNew Berlin, WI1083622666
- Yusuf Abdullah, DOSun Prairie, WI1437788478
- Vanessa Abejuela-Matt, D.O.Mount Pleasant, WI1558687749
- Emily Abeyta, MDWaukesha, WI1386905107
- Jeanette Abraham, MDWeston, WI1205895810
- Sarada Abraham, M.D.Oconomowoc, WI1962851972
- Kirsten Abramson, MDMadison, WI1417909979
- Alexandra Adams, MD PHDMadison, WI1184689291
- David AdamsMadison, WI1992986897
Common questions
What is William T. Swearingen, DO's NPI number?
William T. Swearingen, DO's National Provider Identifier (NPI) is 1336168236, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William T. Swearingen, DO located?
The NPPES record lists a practice address at 5110N W Hwy 51, Mercer, WI, 54547. Phone: (888) 652-5033. Providers update this record themselves, so call before visiting.
How can I verify William T. Swearingen, DO's license?
NPPES lists Wisconsin license number 13210-321, 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 William T. Swearingen, DO prescribe under Medicare Part D?
In 2024, William T. Swearingen, DO had 4,081 Medicare Part D claims for 312 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is William T. Swearingen, DO's MIPS final score?
The 2023 MIPS final score is 91.2 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.