Mariano L. Rosales, M.D.
Adolescent Medicine (Internal Medicine) Physician · Waupun, WI
Mariano L. Rosales, M.D. is an adolescent medicine (internal medicine) physician with a practice address in Waupun, Wisconsin, and NPI 1982658118, issued on May 20, 2006. Check the license (Wisconsin 21906, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mariano L. Rosales
- Credential
- M.D.
- Primary taxonomy
- Adolescent Medicine (Internal Medicine) Physician 207RA0000X
- License number
- 21906 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Fern St, Waupun, WI 53963
- Phone
- (920) 324-3559
- Enumerated
- May 20, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (920) 324-0258
- Medicaid ID
- 30219800 WI
- Entity
- Type 1 · individual
3 nearest adolescent medicine (internal medicine) physician records → All 4 in Wisconsin → Look up another NPI →
Verify Mariano L. Rosales in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 21906Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average adolescent medicine (internal medicine) physician in 2024
995 Medicare Part D claims for 69 beneficiaries, against an average of 3,639 among the 177 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium71 claims
- Losartan Potassium52 claims
- Metoprolol Tartrate47 claims
- Metformin Hcl46 claims
- Losartan-Hydrochlorothiazide35 claims
- Metoprolol Succinate31 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.
Adolescent Medicine (Internal Medicine) Physician providers in Wisconsin
There are 4 adolescent medicine (internal medicine) physician records in Wisconsin.
All 4 in Wisconsin → Every provider in Waupun → Adolescent Medicine (Internal Medicine) Physician nationwide →
The 3 adolescent medicine (internal medicine) physician records with the nearest ZIP codes
- Dharmesh Babaria, MDEau Claire, WI 547011053421206
- Miroslaw Rogalski, MDUnion Grove, WI 531821598868630
- Brenda Grass, MDFond Du Lac, WI 549351356332753
Common questions
What is Mariano L. Rosales, M.D.'s NPI number?
Mariano L. Rosales, M.D.'s National Provider Identifier (NPI) is 1982658118, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mariano L. Rosales, M.D. located?
The NPPES record lists a practice address at 600 Fern St, Waupun, WI, 53963. Phone: (920) 324-3559. Providers update this record themselves, so call before visiting.
How can I verify Mariano L. Rosales, M.D.'s license?
NPPES lists Wisconsin license number 21906, 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 Mariano L. Rosales, M.D. prescribe under Medicare Part D?
In 2024, Mariano L. Rosales, M.D. had 995 Medicare Part D claims for 69 beneficiaries; the average among adolescent medicine (internal medicine) physician prescribers was 3,639. 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.