Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Michael P. Theisen, MD

Individual provider Anesthesiology Physician · NPI 1134167943

Michael P. Theisen, MD is an Anesthesiology in Seattle, Washington. Graduated from University of Washington School of Medicine in 1979, 47 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oregon, Washington and Wisconsin.

Years since qualifying
47
Trained at
University of Washington School of Medicine
Licensed in
OR, WA, WI
In the registry since
2006
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

325 9th Ave
Seattle, WA 98104-2420
Phone: (206) 520-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1400 Bellinger Street, Eau Claire, WI 54703-5222 — (715) 838-5222

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD00018370 (WA)
Anesthesiology Physician Taxonomy 207L00000X · Licence MD211415 (OR)
Anesthesiology Physician Taxonomy 207L00000X · Licence 13266 (WI)

Record details

NPI number1134167943
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 3, 2006
Last updated in NPPESMarch 5, 2025
Certification dateMarch 5, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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