Michael Theisen, MD
NPI 1134167943 · Anesthesiology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Theisen, MD is a Anesthesiology Physician provider in Seattle, WA (NPI 1134167943).
Provider details
- NPI number
- 1134167943
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD211415 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
26 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Retinal Surgery00145 | 26 | $166 |
Typical Medicare-allowed amounts for these services range $166–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1400 Bellinger StreetEau Claire, WI 54703-5222Phone: (715) 838-5222
Registry dates
- Enumerated
- 2006-06-03
- Last updated
- 2025-03-05
- Certified
- 2025-03-05
Frequently asked questions
- What is Michael Theisen's NPI number?
- Michael Theisen's National Provider Identifier (NPI) is 1134167943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Theisen's specialty?
- Michael Theisen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Theisen located?
- Michael Theisen's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Michael Theisen's phone number?
- The practice phone number listed in the NPPES registry for Michael Theisen is (206) 520-5000.
- Does Michael Theisen accept Medicare?
- Michael Theisen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Theisen's NPI active?
- Yes — Michael Theisen's NPI (1134167943) is active in the NPPES registry as of the last update on 2025-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.