NPPES file of Aug 9, 2026

Esther Hsiu-Hsin-Hua Chen, M.D.

Family Medicine Physician · Los Gatos, CA

Esther Hsiu-Hsin-Hua Chen, M.D. is a family medicine physician with a practice address in Los Gatos, California, and NPI 1568784478, issued on Feb 18, 2010. Check the license (California A118789, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1568784478
Name
Esther Hsiu-Hsin-Hua Chen
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A118789 CA
Self-reported in NPPES; status is on the state search
Practice location
16400 Lark Ave, Los Gatos, CA 95032
Phone
(408) 560-9900
Enumerated
Feb 18, 2010
Record last updated
Dec 5, 2015 (not updated in 11 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 16400 Lark Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Heather Bazinet, PTPhysical Therapist1326120726
  2. Ali Moayed, MDUrology Physician1124126503
  3. Loree Pinnavaia, D.C.Orthopedic Chiropractor1699071563
  4. Mark Rindge, DDSDentist1831229392
  5. Farzaneh Tabrizi, MDFamily Medicine Physician1194826909
  6. Michael Williamson, RADTAddiction (Substance Use Disorder) Counselor1487401154

Verify Esther Hsiu-Hsin-Hua Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A118789    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Esther Hsiu-Hsin-Hua Chen among 17,133 family medicine physician records in California

Esther Hsiu-Hsin-Hua Chen, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 60% of them.

  • NPI issued2010 · 60% of these records are older, 37% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2015 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

45 family medicine physician records list a practice address in Los Gatos

They are 45 of the 1,905 NPPES records with a practice address in Los Gatos, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 17,133 in California → Every provider in Los Gatos → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. William Broad, MDLos Gatos, CA 950321750374591
  2. Tiffany Davies, M.D.Los Gatos, CA 950321386754133
  3. Mary Defigard, MDLos Gatos, CA 950321710914791
  4. Dewey Duckham, M.D.Los Gatos, CA 950321356369508
  5. Timothy Jen, M.D.Los Gatos, CA 950321013944628
  6. Neeraj Kochhar, MDLos Gatos, CA 950321033180294
  7. Thao Nguyen, MDLos Gatos, CA 950321619909975
  8. Arthur Polussa, M.D.Los Gatos, CA 950321629062021

Common questions

What is Esther Hsiu-Hsin-Hua Chen, M.D.'s NPI number?

Esther Hsiu-Hsin-Hua Chen, M.D.'s National Provider Identifier (NPI) is 1568784478, issued on Feb 18, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Esther Hsiu-Hsin-Hua Chen, M.D. located?

The NPPES record lists a practice address at 16400 Lark Ave, Los Gatos, CA, 95032. Phone: (408) 560-9900. Providers update this record themselves, so call before visiting.

How can I verify Esther Hsiu-Hsin-Hua Chen, M.D.'s license?

NPPES lists California license number A118789, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.