Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Mariano L Rosales Jr., MD

Individual provider Adolescent Medicine (Internal Medicine) Physician · NPI 1982658118

Dr. Mariano L Rosales Jr., MD is an Adolescent Medicine (Internal Medicine) Physician in Waupun, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

600 Fern St
Waupun, WI 53963-1018
Phone: (920) 324-3559
Fax: (920) 324-0258
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adolescent Medicine (Internal Medicine) Physician (primary) Taxonomy 207RA0000X · Licence 21906 (WI)

Record details

NPI number1982658118
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 20, 2006
Last updated in NPPESJuly 13, 2026

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients23
Services billed 55 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.