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BAY AREA RETINA ASSOCIATES, MEDICAL GROUP
NPI 1083857353
Ophthalmology - Retina Specialist in San Leandro, CA

Active since April 15, 2009
15051 HESPERIAN BLVD STE D, SAN LEANDRO, CA 94578(510) 317-1111(510) 317-1113 Get Directions Write a Review

NPPES record last updated: May 23, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 23, 2021, Apr 11, 2019 (2 updates tracked since 2019).

About Bay Area Retina Associates, Medical Group NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BAY AREA RETINA ASSOCIATES, MEDICAL GROUP (NPI 1083857353) is a healthcare organization registered as a retina specialist in San Leandro, California and active in the NPI registry since April 2009. The organization lists Agnes Mercado, Director Of Revenue Cycle, as its authorized official.

NPPES Registry Identity

NPI1083857353
Entity TypeOrganization
Primary Taxonomy207WX0107X
Legal Business NameBAY AREA RETINA ASSOCIATES, MEDICAL GROUP
Location Address15051 HESPERIAN BLVD STE DSan Leandro, CA 94578-3536
Mailing Address365 Lennon Ln Ste 250Walnut Creek, CA 94598-5915 · (925) 265-8324 · Fax (925) 522-8658
Phone(510) 317-1111
Fax(510) 317-1113
Organization SubpartYes
Authorized OfficialAgnes MercadoDirector Of Revenue Cycle · (925) 265-8324
Enumeration DateApril 15, 2009
Last NPPES UpdateMay 23, 20212 updates tracked since enumeration
NPPES CertifiedMay 23, 2021
✔ NPI 1083857353 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0107X
Definition
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.
15051 HESPERIAN BLVD STE D, San Leandro, CA 94578
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Other Identifiers 2

MedicaidGR0030670CA
MedicaidGR0030671CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bay Area Retina Associates, Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

9

Medicare enrollment records show 9 clinicians reassign Medicare billing to Bay Area Retina Associates, Medical Group, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (9)

Tuow Ting, M.D.,PH.D.
Ophthalmology
NPI 1043244437
491 30TH ST STE 102
Oakland, CA 94609
(510) 832-6554
✔ PECOS✔ Accepts Medicare11 mi
Flavius Beca
Ophthalmology
NPI 1659909620
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Roger Goldberg, MD
Ophthalmology
NPI 1184866584
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Caesar Luo, M.D.
Ophthalmology
NPI 1669684072
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Elizabeth Marlow Lehrburger, M.D.
Ophthalmology
NPI 1336568815
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Tushar Ranchod, MD
Ophthalmology
NPI 1316003304
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Subhransu Ray, M.D., PH.D.
Ophthalmology
NPI 1578597878
365 LENNON LN STE 250
Walnut Creek, CA 94598
(925) 943-6800
✔ PECOS✔ Accepts Medicare16 mi
Christianne Wa, MD
Ophthalmology
NPI 1073908976
1460 N CAMINO ALTO STE 206
Vallejo, CA 94589
(800) 573-8462
✔ PECOS✔ Accepts Medicare30 mi
Yingna Liu, MD
Ophthalmology
NPI 1932631462
2160 W GRANT LINE RD STE 240
Tracy, CA 95377
(800) 573-8462
✔ PECOS✔ Accepts Medicare37 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Bay Area Retina Associates, Medical Group's NPI number?

The NPI number for Bay Area Retina Associates, Medical Group is 1083857353. It was assigned to this organization in the NPPES registry on April 15, 2009.

Where is Bay Area Retina Associates, Medical Group located?

Bay Area Retina Associates, Medical Group is located at 15051 Hesperian Blvd Ste D, San Leandro, CA 94578. The listed phone number is (510) 317-1111.

What is Bay Area Retina Associates, Medical Group's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

Is Bay Area Retina Associates, Medical Group enrolled in Medicare?

Yes. Bay Area Retina Associates, Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Bay Area Retina Associates, Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 9 clinicians, all in Ophthalmology, reassign their Medicare billing to Bay Area Retina Associates, Medical Group. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Bay Area Retina Associates, Medical Group was last updated on May 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.