Subhransu Kumar Ray, M.D., PH.D.
Ophthalmology (CMS) · Walnut Creek, CA
At a glance
365 Lennon Ln Ste 250, Walnut Creek, CA 94598-5915
Published activity: Cataract surgery. View counts and coverage
NPPES record updated Apr 29, 2021. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
365 Lennon Ln Ste 250Walnut Creek, CA 94598-5915
Additional reported practice locations
2219 Buchanan Rd Ste 6Antioch, CA 945094200
Phone: 9255228850
Fax: 9255228851 491 30Th St Ste 102
Oakland, CA 946093235
Phone: 5108326554
Fax: 5108323119 15051 Hesperian Blvd Ste D
San Leandro, CA 945783536
Phone: 5103171111
Fax: 5103171113
Education & affiliations
- Medical / professional school
- Albert Einstein College Of Medicine Of Yeshiva University
- Graduation year
- 1996
- CMS specialties
- Ophthalmology
Practice groups
Reported hospital affiliations
- Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Cataract surgery | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $889.13 |
Reporting companies
| Company | Amount |
|---|---|
| ANI PHARMACEUTICALS, INC. | $201.03 |
| ALCON VISION LLC | $147.53 |
| APELLIS PHARMACEUTICALS, INC. | $140.22 |
| GENENTECH USA, INC. | $140.15 |
| MALLINCKRODT HOSPITAL PRODUCTS INC. | $99.00 |
| ASTELLAS PHARMA US INC | $89.93 |
| ABBVIE INC. | $45.55 |
| REGENERON HEALTHCARE SOLUTIONS, INC. | $25.72 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Ophthalmology (CMS)
- Taxonomy code
- 207WX0107X
- Enumeration date
- Jul 10, 2006
- Record updated
- Apr 29, 2021
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D., PH.D.
Reported taxonomies and licenses
207W00000X
License reported: G86936 CA
207WX0107X · Primary
License reported: G86936 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
365 Lennon Ln Ste 250Walnut Creek, CA 94598-5915
- Phone
- (925) 943-6800
- Fax
- (925) 943-6880
Mailing address
365 LENNON LN STE 250WALNUT CREEK, CA 945985915
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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