DR. CYNTHIA S. CHIU M.D.
NPI 1306852629
Ophthalmology in Oakland, CA
About Dr. Cynthia S. Chiu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CYNTHIA S. CHIU M.D. (NPI 1306852629) is an individual ophthalmology provider in Oakland, California, licensed in California (A96867) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Cynthia S. Chiu M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Cynthia Chiu reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oakland, CA 94609
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Cynthia S Chiu MD Facs Inc
San Francisco, CA 94107
- Reassigned Medicare billing, California enrollment
- 1,573 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 16
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94609 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Cynthia Chiu's NPI number?
The NPI number for Cynthia Chiu is 1306852629. It was assigned to this individual provider in the NPPES registry on July 31, 2006.
Where is Cynthia Chiu located?
Cynthia Chiu practices at 491 30th St Suite 201, Oakland, CA 94609. The listed phone number is (510) 836-2122.
What is Cynthia Chiu's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Cynthia Chiu enrolled in Medicare?
Yes. Cynthia Chiu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Cynthia Chiu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Chiu reassigns Medicare benefits to 5 organizations: Cynthia S. Chiu, M.D., F.A.C.S., Inc. (Oakland, CA), City & County Of San Francisco (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each 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 Cynthia Chiu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cynthia Chiu accept?
Health plans from Providence Health Plan list Cynthia Chiu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Cynthia Chiu was last updated on January 26, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Cynthia S. Chiu, M.D. · NPI 1306852629
Ophthalmology physician in Oakland, California. Individual provider, active in the CMS NPPES registry since July 31, 2006.
## Identity
- **NPI:** 1306852629 (Entity type: Individual)
- **Enumerated:** July 31, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A96867 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 491 30TH ST, SUITE 201, Oakland, CA 94609-3235
- **Phone:** (510) 836-2122 · **Fax:** (510) 836-3773
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Cynthia S. Chiu, M.D., F.A.C.S., Inc. (NPI 1912365115, Oakland, CA); City & County Of San Francisco (NPI 1568923894, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 2001
## Record status
- **NPPES last updated:** January 26, 2016
- **Other identifiers:** Medicare UPIN I14739 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1306852629) · Data from the CMS NPPES public registry.