Registry data as of Aug 27, 2026

Calvin Chen, MD

Pediatrics Physician · Tustin, CA

Calvin Chen, MD is a pediatrics physician with a practice address in Tustin, California, and NPI 1831168111, issued on Mar 17, 2006. Check the license on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1831168111
Name
Calvin Chen
Credential
MD
Primary taxonomy
Pediatrics Physician 208000000X
Practice location
661 W 1St St Ste G, Tustin, CA 92780
Phone
(714) 665-9890
Enumerated
Mar 17, 2006
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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Also registered at 661 W 1St St Ste G

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

  1. Marlie Abrahams, PA-CPhysician Assistant1639409048
  2. Denise Aquino, PA-CPhysician Assistant1750988671
  3. Bernard Bennett, MDInternal Medicine Physician1871568899
  4. Viktoriya Birger, NP-CFamily Nurse Practitioner1720853153
  5. Heather Bonnville, PHYSICIAN ASSISTANTPhysician Assistant1770762429
  6. Robert Borrowdale, M.D.Obstetrics & Gynecology Physician1013958545

Verify Calvin Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck 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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

22 pediatrics physician records list a Tustin practice address

They are 22 of the 2,221 NPPES records with a Tustin practice address, and 10,094 pediatrics physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other pediatrics physician records in California

  1. Subha Aahlad, M.D.Foster City, CA1780610253
  2. Rebecca Aaronson, MDPanorama City, CA1487746814
  3. Gregorio Abad-Santos, M.D.Long Beach, CA1255451894
  4. Michelle Abajian, MDLa Canada, CA1619176757
  5. Joseph Abapo, MDRiverside, CA1841348786
  6. Lauren Abbas, MDLos Angeles, CA1982163796
  7. Mazen Abbas, D.O., M.P.H.Madera, CA1790775278
  8. Attia Abbasi, M.D.Auburn, CA1922027127
  9. David Abbott, MDSanta Barbara, CA1144233370
  10. Lara Abbott, M.D.San Fernando, CA1053312868

Common questions

What is Calvin Chen, MD's NPI number?

Calvin Chen, MD's National Provider Identifier (NPI) is 1831168111, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Calvin Chen, MD located?

The NPPES record lists a practice address at 661 W 1St St Ste G, Tustin, CA, 92780. Phone: (714) 665-9890. Providers update this record themselves, so call before visiting.

How can I verify Calvin Chen, MD's license?

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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.