Subhransu Kumar Ray, M.D., PH.D.
Retina Specialist (Ophthalmology) Physician · Walnut Creek, CA
Subhransu Kumar Ray, M.D., PH.D. is a retina specialist (ophthalmology) physician with a practice address in Walnut Creek, California, and NPI 1578597878, issued on Jul 10, 2006. Check the license (California G86936, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Subhransu Kumar Ray
- Credential
- M.D., PH.D.
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- G86936 CA
Self-reported in NPPES; status is on the state search - Practice location
- 365 Lennon LN Ste 250, Walnut Creek, CA 94598
- Phone
- (925) 943-6800
- Enumerated
- Jul 10, 2006
- Record last updated
- Apr 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (925) 943-6880
- Medicaid ID
- 00G869360 CA
- Medicare enrollment
- Enrolled (PECOS I20040318001756); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 1996
- Entity
- Type 1 · individual
Also registered at 365 Lennon LN Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stewart Daniels, M.D.Retina Specialist (Ophthalmology) Physician1124052428
- Roger Goldberg, MDRetina Specialist (Ophthalmology) Physician1184866584
- Craig Leong, M.D.Retina Specialist (Ophthalmology) Physician1639103344
- Caesar Luo, M.D.Retina Specialist (Ophthalmology) Physician1669684072
- Elizabeth Marlow Lehrburger, M.D.Retina Specialist (Ophthalmology) Physician1336568815
- Tushar Ranchod, MDRetina Specialist (Ophthalmology) Physician1316003304
Verify Subhransu Kumar Ray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G86936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
257 Medicare Part D claims for 98 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Prednisolone Acetate82 claims
- Moxifloxacin60 claims
- Ketorolac Tromethamine21 claims
- Brimonidine Tartrate-Timolol16 claims
- Loteprednol Etabonate12 claims
- Timolol Maleate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $3,431.25
32 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bay Area Retina AssociatesSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in California
There are 205 retina specialist (ophthalmology) physician records in California.
Other retina specialist (ophthalmology) physician records in California
- Sean Adrean, M.D.Fullerton, CA1073566568
- Anita Agarwal, MDSan Francisco, CA1508940628
- Harris Ahmed, DO, MPHPalm Desert, CA1700413317
- Tarek Alasil, MDLos Angeles, CA1003072786
- Payam Amini, M.DPasadena, CA1205036456
- Michael Ammar, MDPoway, CA1982099115
- Samuel Asanad, MDMission Hills, CA1194345975
- Adrian Au, MDLos Angeles, CA1124482450
- Robert Avery, M.D.Santa Barbara, CA1700985496
- Amr Azzam, MD, PHDLoma Linda, CA1013898774
Common questions
What is Subhransu Kumar Ray, M.D., PH.D.'s NPI number?
Subhransu Kumar Ray, M.D., PH.D.'s National Provider Identifier (NPI) is 1578597878, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Subhransu Kumar Ray, M.D., PH.D. located?
The NPPES record lists a practice address at 365 Lennon LN Ste 250, Walnut Creek, CA, 94598. Phone: (925) 943-6800. Providers update this record themselves, so call before visiting.
How can I verify Subhransu Kumar Ray, M.D., PH.D.'s license?
NPPES lists California license number G86936, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Subhransu Kumar Ray, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Subhransu Kumar Ray, M.D., PH.D. had 257 Medicare Part D claims for 98 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Subhransu Kumar Ray, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.