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

Thomas A Stoa, MD

Individual provider Preventive Medicine/Occupational Environmental Medicine Physician · NPI 1659361152

Thomas A Stoa, MD is registered under Family Practice in Onalaska, Wisconsin. Graduated from Baylor College of Medicine in 1985, 41 years ago. Practices with Mayo Clinic Health System-Southwest Wisconsin Region Inc, a 552-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
41
Trained at
Baylor College of Medicine
Licensed in
WI
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

191 Theater Rd
Onalaska, WI 54650-8679
Phone: (608) 392-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 37510 (WI)
Preventive Medicine/Occupational Environmental Medicine Physician Taxonomy 2083P0500X · Licence 37510 (WI)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 37510 (WI)

Record details

NPI number1659361152
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 26, 2005
Last updated in NPPESAugust 20, 2024
Certification dateAugust 20, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Also practisesPREVENTIVE MEDICINE
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Mayo Clinic Health System-Southwest Wisconsin Region Inc — 552 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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 patients36
Services billed 37 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mayo Clinic Health System-Southwest Wisconsin Region Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 552 clinicians in the practice; 12 are shown here.

Other providers in Onalaska