Quick answers
- Which hospitals does Clayton Chen work at?
- Medicare's official clinician data lists Clayton Chen at 3 hospitals: Fairview Lakes Health Services, M Health Fairview University of MN Medical Center and NorthBay Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Clayton Chen see patients?
- Medicare's clinician data lists 2 practice locations, including Vacaville, CA and Minneapolis, MN. Call before your visit to confirm the address.
- What is Clayton Chen's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Clayton Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Clayton Chen 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 Clayton Chen?
- (707) 624-8000, as listed in official Medicare / NPI Registry data.
- What is Clayton Chen's NPI number?
- 1598837569. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Clayton Chen works
Medicare's Facility Affiliation Data lists Clayton Chen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fairview Lakes Health ServicesWyoming, MN · Acute Care Hospital · CCN 240050
- M Health Fairview University of MN Medical CenterMinneapolis, MN · Acute Care Hospital · CCN 240080
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · CCN 050367
Practice locations
Addresses where Clayton Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1020 Nut Tree Rd, Suite 390Vacaville, CA 95687 (707) 624‑8000
- 516 Delaware St SEMinneapolis, MN 55455 (612) 625‑4400
Group practices
Medicare enrollment lists Clayton Chen as a member of these groups (CMS data updated 2026-10-02).
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- University of Minnesota Physicians164 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Medical school | Virginia Commonwealth University, School Of Medicine |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598837569 |
| 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