SARA TRAN HONG CHAU M.D.
NPI 1619194107
Family Medicine in Costa Mesa, CA

Q: What is Sara Chau's NPI number?

The NPI number for Sara Chau is 1619194107. It was assigned to this individual provider in the NPPES registry on April 19, 2007.

Q: What is Sara Chau's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Sara Chau was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since April 19, 2007PECOS EnrolledAccepts Medicare Assignment

660 BAKER ST STE A102, COSTA MESA, CA 92626(714) 668-2505(714) 668-2515 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 19, 2025, Mar 28, 2025 (2 updates tracked since 2025).

On this page

About Sara Tran Hong Chau M.d. NPPES

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

SARA TRAN HONG CHAU M.D. (NPI 1619194107) is an individual family medicine provider in Costa Mesa, California, licensed in California (A85587) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Irvine, and is a graduate of University Of California, Geffen School Of Medicine (2002).

NPPES Registry Identity

NPI1619194107

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameSARA TRAN HONG CHAUCredential: M.D.

Location Address660 BAKER ST STE A102Costa Mesa, CA 92626-4407

Mailing AddressPo Box 2218Suisun City, CA 94585-5218 · (657) 241-3600 · Fax (657) 241-7708

Phone(714) 668-2505

Fax(714) 668-2515

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2002

Enumeration DateApril 19, 2007

Last NPPES UpdateNovember 19, 20252 updates tracked since enumeration

NPPES CertifiedNovember 19, 2025

✔ NPI 1619194107 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · A85587

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

660 BAKER ST STE A102, Costa Mesa, CA 92626

Open in Google Maps ↗

Secondary Practice Location 1

Location 14950 Barranca Pkwy Ste 104Irvine, CA 92604-8644 · Phone (949) 857-1248 · Fax (949) 559-1165

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

Sara Tran Hong Chau 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.

PECOS PAC ID7719930916

PECOS Enrollment IDI20050228001025

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Sara Chau reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Memorialcare Medical Foundation

4.5 mi

Clinic/Center

17360 BROOKHURST ST
Fountain Valley, CA 92708

Reassigned Medicare billing, California enrollment
948 clinicians in this Medicare group

NPI 1205167350 (877) 696-3622

Coastal Family Medicine Inc

Reassigned Medicare billing, California enrollment
34 clinicians in this Medicare group

No phone listed

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

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92626 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JESSICA NICOLE SANTOS PA

Physician Assistant