Quick answers
- Which hospitals does Subhransu K. Ray work at?
- Medicare's official clinician data lists Subhransu K. Ray at 1 hospital: Alta Bates Summit Medical Center - Alta Bates Camp…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Subhransu K. Ray see patients?
- Medicare's clinician data lists 2 practice locations, including San Leandro, CA and Walnut Creek, CA. Call before your visit to confirm the address.
- What is Subhransu K. Ray's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Subhransu K. Ray accept Medicare assignment?
- Yes. Medicare's clinician data says Subhransu K. Ray 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 Subhransu K. Ray?
- (925) 522-8850, as listed in official Medicare / NPI Registry data.
- What is Subhransu K. Ray's NPI number?
- 1578597878. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Subhransu K. Ray works
Medicare's Facility Affiliation Data lists Subhransu K. Ray 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 Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
Practice locations
Addresses where Subhransu K. Ray is enrolled with Medicare (CMS data updated 2026-10-02).
- 15051 Hesperian Blvd, Suite DSan Leandro, CA 94578 (925) 522‑8850
- 365 Lennon Ln, Suite 250Walnut Creek, CA 94598 (925) 943‑6800
Group practices
Medicare enrollment lists Subhransu K. Ray as a member of this group (CMS data updated 2026-10-02).
- Bay Area Retina Associates8 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in San Leandro
Clinicians with the same Medicare primary specialty in San Leandro, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578597878 |
| 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