Quick answers
- Which hospitals does Samira Rathnayake work at?
- Medicare's official clinician data lists Samira Rathnayake at 5 hospitals: El Camino Health, Good Samaritan Hospital, John Muir Medical Center - Walnut Creek Campus, Santa Clara Valley Medical Center and Sutter Delta Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Samira Rathnayake see patients?
- Medicare's clinician data lists 6 practice locations, including Walnut Creek, CA, Vallejo, CA and Honolulu, HI. Call before your visit to confirm the address.
- What is Samira Rathnayake's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Samira Rathnayake accept Medicare assignment?
- Medicare's clinician data says Samira Rathnayake may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Samira Rathnayake?
- (925) 295-1545, as listed in official Medicare / NPI Registry data.
- What is Samira Rathnayake's NPI number?
- 1558705277. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Samira Rathnayake works
Medicare's Facility Affiliation Data lists Samira Rathnayake at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- El Camino HealthMountain View, CA · Acute Care Hospital · CCN 050308
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · CCN 050380
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
- Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · CCN 050038
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
Practice locations
Addresses where Samira Rathnayake is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 295‑1545
- 1601 Ygnacio Vly RdWalnut Creek, CA 94596 (925) 939‑3000
- 300 Hospital DrVallejo, CA 94589 (707) 554‑4107
- 500 Ala Moana Blvd, Suite 7 421Honolulu, HI 96813 (925) 296‑7150
- 751 S Bascom Ave, Santa Clara Vly MedSan Jose, CA 95128 (408) 885‑5000
Group practices
Medicare enrollment lists Samira Rathnayake as a member of these groups (CMS data updated 2026-10-02).
- County of Santa Clara1,022 clinicians in the group
- Bay Imaging Consultants Medical Group Inc146 clinicians in the group
- John Muir Trauma Physicians Billing Service113 clinicians in the group
- John Muir Magnetic Imaging Center57 clinicians in the group
- Solano Diagnostics Partners a Calif Limited Partnership45 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1558705277 |
| 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