CINDY TUNG CHAU MD
NPI 1699080598
Obstetrics & Gynecology - Maternal & Fetal Medicine in Orange, CA
About Cindy Tung Chau Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CINDY TUNG CHAU MD (NPI 1699080598) is an individual maternal & fetal medicine provider in Orange, California, licensed in California (A120532) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 2
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
Cindy Tung Chau Md 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
4Medicare enrollment records show Cindy Chau reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 149 clinicians in this Medicare group
Santa Ana, CA 92701
- Reassigned Medicare billing, California enrollment
- 255 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 191 clinicians in this Medicare group
Chino Hills, CA 91709
- Reassigned Medicare billing, California enrollment
- 5,228 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
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 Cindy Chau's NPI number?
The NPI number for Cindy Chau is 1699080598. It was assigned to this individual provider in the NPPES registry on August 16, 2010.
Where is Cindy Chau located?
Cindy Chau practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-6431.
What is Cindy Chau's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Cindy Chau enrolled in Medicare?
Yes. Cindy Chau 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 Cindy Chau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cindy Chau reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (Orange, CA), University Of California Irvine (Santa Ana, CA), Magella Medical Group, Inc. (Long Beach, CA) and Southern California Permanente Medical Group (Chino Hills, 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 Cindy Chau's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Cindy Chau was last updated on May 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.
# Cindy Tung Chau, MD · NPI 1699080598
Maternal & Fetal Medicine physician in Orange, California. Individual provider, active in the CMS NPPES registry since August 16, 2010.
## Identity
- **NPI:** 1699080598 (Entity type: Individual)
- **Enumerated:** August 16, 2010
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** A120532 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-6431
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1356304034, Orange, CA); University Of California Irvine (NPI 1851325906, Santa Ana, CA); Magella Medical Group, Inc. (NPI 1376640086, Long Beach, CA); Southern California Permanente Medical Group (NPI 1396287082, Chino Hills, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2010
## Record status
- **NPPES last updated:** May 27, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1699080598) · Data from the CMS NPPES public registry.