Ashley J. Wirtz, M.D.
Family Medicine Physician · Mosine, WI
Ashley J. Wirtz, M.D. is a family medicine physician with a practice address in Mosine, Wisconsin, and NPI 1598104911, issued on Jun 19, 2013. Check the license (Wisconsin 63104, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ashley J. Wirtz
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 63104 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1881 County Road XX, Mosine, WI 54455
- Phone
- (715) 355-4040
- Enumerated
- Jun 19, 2013
- Record last updated
- Sep 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160829001378); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Verify Ashley J. Wirtz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 63104Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average family medicine physician in 2024
8,383 Medicare Part D claims for 508 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 239 claims were for opioids.
Most prescribed
- Levothyroxine Sodium534 claims
- Atorvastatin Calcium469 claims
- Losartan Potassium317 claims
- Omeprazole265 claims
- Amlodipine Besylate232 claims
- Hydrochlorothiazide230 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 practice group's MIPS final score for 2023 (Medicare payment program): 83.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Aspirus Medical Group, Inc.Kronenwetter, WI
- Aspirus Wausau Hospital IncWausau, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashley J. Wirtz among 3,765 family medicine physician records in Wisconsin
Ashley J. Wirtz, M.D. 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2007 among the 2,347 with a school on file
- Record last updated2016 · 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).
Family Medicine Physician providers in Wisconsin
There are 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Elizabeth Barr, MDMosinee, WI 544551528093903
- Gerald Grim, MDMosinee, WI 544551881709301
- Boyd Groth, MDMosinee, WI 544551861507378
- William Johnston, MDMosinee, WI 544551427017789
- Tou Shoua Lor, MDKronenwetter, WI 544551104184076
- William Nietert, MDMosinee, WI 544551255357042
- Susan Schneider, MDMosinee, WI 544551447264098
- Jerome Sheff, MDMosinee, WI 544551659369205
Common questions
What is Ashley J. Wirtz, M.D.'s NPI number?
Ashley J. Wirtz, M.D.'s National Provider Identifier (NPI) is 1598104911, issued on Jun 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ashley J. Wirtz, M.D. located?
The NPPES record lists a practice address at 1881 County Road XX, Mosine, WI, 54455. Phone: (715) 355-4040. Providers update this record themselves, so call before visiting.
How can I verify Ashley J. Wirtz, M.D.'s license?
NPPES lists Wisconsin license number 63104, 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 Ashley J. Wirtz, M.D. prescribe under Medicare Part D?
In 2024, Ashley J. Wirtz, M.D. had 8,383 Medicare Part D claims for 508 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Ashley J. Wirtz, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.7 of 100, reported for the practice group. 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.