Quick answers
- Which hospitals does Michael E. Tjarksen work at?
- Medicare's official clinician data lists Michael E. Tjarksen at 1 hospital: Waukesha Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael E. Tjarksen see patients?
- Medicare's clinician data lists 2 practice locations, including Mukwonago, WI and Pewaukee, WI. Call before your visit to confirm the address.
- What is Michael E. Tjarksen's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Michael E. Tjarksen accept Medicare assignment?
- Yes. Medicare's clinician data says Michael E. Tjarksen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Michael E. Tjarksen?
- (262) 303-5055, as listed in official Medicare / NPI Registry data.
- What is Michael E. Tjarksen's NPI number?
- 1639152747. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael E. Tjarksen works
Medicare's Facility Affiliation Data lists Michael E. Tjarksen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Waukesha Memorial HospitalWaukesha, WI · Acute Care Hospital · CCN 520008
Practice locations
Addresses where Michael E. Tjarksen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1231 S Rochester St, Suite 100Mukwonago, WI 53149 (262) 303‑5055
- N15W28300 Golf RdPewaukee, WI 53072 (262) 303‑5055
Group practices
Medicare enrollment lists Michael E. Tjarksen as a member of this group (CMS data updated 2026-10-02).
- Orthopaedic Associates of Wisconsin SC109 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Mukwonago
Clinicians with the same Medicare primary specialty in Mukwonago, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639152747 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians