Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Calvin Kuo-Yang Chen, MD
Pediatrics Physician in Tustin, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831168111
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Registry record
Entity type Individual (Type 1)
Name Calvin Kuo-Yang Chen
Credential MD
Sex Male
Practice address 661 W 1st St Ste G, Tustin, CA, 92780
Phone (714) 665-9890
Fax (714) 665-9891
Enumeration date Mar 17, 2006
Last updated in NPPES Jun 18, 2026
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD60082435 (WA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1831168111 | Medicaid | CA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Calvin Chen practice?
The practice location on file with NPPES is in Tustin, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Calvin Chen?
The National Provider Identifier (NPI) for Calvin Chen is 1831168111, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Moothedath Menon Gastroenterology Physician · Tustin, CA NPI 1336134014 Rossy Perez Physician Assistant · Tustin, CA NPI 1417930272 Lowell Gordon Pediatrics Physician · Tustin, CA NPI 1548248065 Bernard Bennett Internal Medicine Physician · Tustin, CA NPI 1871568899 Robert Borrowdale Obstetrics & Gynecology Physician · Tustin, CA NPI 1013958545 Thanh Phung Diagnostic Radiology Physician · Tustin, CA NPI 1952315319 Carlos Guerrero Physician Assistant · Tustin, CA NPI 1023026523 Pedro Carrillo Family Medicine Physician · Tustin, CA NPI 1154330504
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-18.