Quick answers
- Which hospitals does Frederick E. Tonnos work at?
- Medicare's official clinician data lists Frederick E. Tonnos at 4 hospitals: Sierra Nevada Memorial Hospital, Sutter Amador Hospital, Sutter Auburn Faith Hospital and Sutter Roseville Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frederick E. Tonnos see patients?
- Medicare's clinician data lists 3 practice locations, including Roseville, CA and Carmichael, CA. Call before your visit to confirm the address.
- What is Frederick E. Tonnos's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Frederick E. Tonnos accept Medicare assignment?
- Yes. Medicare's clinician data says Frederick E. Tonnos 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.
- Does Frederick E. Tonnos offer telehealth?
- Medicare's clinician data says Frederick E. Tonnos offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Frederick E. Tonnos?
- (916) 781-1000, as listed in official Medicare / NPI Registry data.
- What is Frederick E. Tonnos's NPI number?
- 1700900032. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frederick E. Tonnos works
Medicare's Facility Affiliation Data lists Frederick E. Tonnos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sierra Nevada Memorial HospitalGrass Valley, CA · Acute Care Hospital · CCN 050150
- Sutter Amador HospitalJackson, CA · Acute Care Hospital · CCN 050014
- Sutter Auburn Faith HospitalAuburn, CA · Acute Care Hospital · CCN 050498
- Sutter Roseville Medical CenterRoseville, CA · Acute Care Hospital · CCN 050309
Practice locations
Addresses where Frederick E. Tonnos is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Medical Plaza DrRoseville, CA 95661 (916) 781‑1000
- 1451 Secret Ravine Pkwy, Suite 150Roseville, CA 95661
- 6620 Coyle Ave, Suite 212Carmichael, CA 95608
Group practices
Medicare enrollment lists Frederick E. Tonnos as a member of this group (CMS data updated 2026-10-02).
- Orthopedic Trauma Surgeons of Northern California16 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Roseville
Clinicians with the same Medicare primary specialty in Roseville, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1700900032 |
| 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