Quick answers
- Which hospitals does Derek Passer work at?
- Medicare's official clinician data lists Derek Passer at 3 hospitals: Aspirus Rhinelander Hospital, Aspirus Riverview Hospital & Clinics Inc and Olean General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Derek Passer see patients?
- Medicare's clinician data lists 4 practice locations, including Rhinelander, WI, Wisconsin Rapids, WI and Olean, NY. Call before your visit to confirm the address.
- What is Derek Passer's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Derek Passer accept Medicare assignment?
- Yes. Medicare's clinician data says Derek Passer 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 Derek Passer?
- (715) 361-2000, as listed in official Medicare / NPI Registry data.
- What is Derek Passer's NPI number?
- 1174055693. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Derek Passer works
Medicare's Facility Affiliation Data lists Derek Passer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aspirus Rhinelander HospitalRhinelander, WI · Acute Care Hospital · CCN 520019
- Aspirus Riverview Hospital & Clinics IncWisconsin Rapids, WI · Acute Care Hospital · CCN 520033
- Olean General HospitalOlean, NY · Acute Care Hospital · CCN 330103
Practice locations
Addresses where Derek Passer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2251 N Shore DrRhinelander, WI 54501 (715) 361‑2000
- 410 Dewey StWisconsin Rapids, WI 54494 (715) 423‑6060
- 420 Dewey StWisconsin Rapids, WI 54494 (715) 422‑7750
- 515 Main StOlean, NY 14760 (716) 323‑6570
Group practices
Medicare enrollment lists Derek Passer as a member of these groups (CMS data updated 2026-10-02).
- Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.574 clinicians in the group
- Aspirus Riverview Hospital and Clinics Inc172 clinicians in the group
- Great Lakes Anesthesiology PC89 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Rhinelander
Clinicians with the same Medicare primary specialty in Rhinelander, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174055693 |
| 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