Quick answers
- Which hospitals does Royce A. Chrys work at?
- Medicare's official clinician data lists Royce A. Chrys at 5 hospitals: Alta Bates Summit Medical Center, Alta Bates Summit Medical Center - Alta Bates Camp…, Eden Medical Center, Sutter Delta Medical Center and Sutter Solano Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Royce A. Chrys see patients?
- Medicare's clinician data lists 2 practice locations, including Castro Valley, CA and Oakland, CA. Call before your visit to confirm the address.
- What is Royce A. Chrys's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Royce A. Chrys accept Medicare assignment?
- Yes. Medicare's clinician data says Royce A. Chrys 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 Royce A. Chrys?
- (510) 899-5052, as listed in official Medicare / NPI Registry data.
- What is Royce A. Chrys's NPI number?
- 1609802131. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Royce A. Chrys works
Medicare's Facility Affiliation Data lists Royce A. Chrys at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- Eden Medical CenterCastro Valley, CA · Acute Care Hospital · CCN 050488
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
- Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · CCN 050101
Practice locations
Addresses where Royce A. Chrys is enrolled with Medicare (CMS data updated 2026-10-02).
- 20103 Lake Chabot Rd, Suite 103Castro Valley, CA 94546 (510) 899‑5052
- 5730 Telegraph AveOakland, CA 94609 (510) 204‑2744
Group practices
Medicare enrollment lists Royce A. Chrys as a member of these groups (CMS data updated 2026-10-02).
- Bay Imaging Consultants Medical Group Inc146 clinicians in the group
- Magnetic Imaging Affiliates LLC45 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609802131 |
| 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