Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1831168111 Individual Practitioner Male Practitioner

Dr. Calvin Kuo-Yang Chen , MD

Pediatrics • Tustin, CA

Professional Overview & Biography Verified Profile Summary

Dr. Calvin Chen, MD is a registered healthcare professional specializing in Pediatrics in Tustin, CA. Practice services are available at 661 W 1ST ST STE G under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

661 W 1st St Ste G

Tustin, CA 927802939

Telephone 7146659890
Fax 7146659891
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Pediatrics in Tustin, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 33.7 Yrs
State Avg: 22.5 Yrs
Regional Practice Density
18 Specialists

Practicing in Tustin, CA (9612 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-06-18
Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

State License CA A78000

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Pediatrics

NUCC Taxonomy Code: 208000000X

State License WA MD60082435

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
1831168111 (CA)

Secondary Practice Locations

11180 Warner Ave Ste 353

Fountain Valley, CA 927084098

Phone: 7149686789

9918 Katella Ave Ste A-C

Anaheim, CA 928046465

Phone: 7146449494

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Nicole Noche , NP

Nurse Practitioner - Women's Health

NPI 1003400524

Nurse Practitioner

Crystal Martin , PA

Physician Assistant

NPI 1003577768

Physician Assistant

Eileen Gomez , NP

Nurse Practitioner - Family

NPI 1013704568

Nurse Practitioner

Dr. Robert Borrowdale , MD

Obstetrics & Gynecology

NPI 1013958545

Doctor of Medicine (M.D.)

Carlos Guerrero , PA-C

Physician Assistant

NPI 1023026523

Physician Assistant (Certified)

Leslie Espinoza , LCSW

Social Worker - Clinical

NPI 1023485299

Licensed Clinical Social Worker

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events
📍
Updated Practice Location June 18, 2026

Registered at 661 W 1ST ST STE G, TUSTIN, CA 927802939 (Tel: 7146659890)

📍
Updated Business Mailing Address June 18, 2026

Registered at 661 W 1ST ST STE G, TUSTIN, CA 927802939 (Tel: 7146659890)

NPI Profile Active December 29, 2009

NPI status registered as active in NPPES database

📍
Updated Practice Location December 29, 2009

Registered at 2525 NE 139TH ST, VANCOUVER, WA 986862719 (Tel: 3608822778)

📍
Updated Business Mailing Address December 29, 2009

Registered at 700 NE 87TH AVE, VANCOUVER, WA 986641913 (Tel: 3603971500)

👤
Provider Name / Credentials Updated December 29, 2009

Recorded as CALVIN CHEN, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 29, 2009

Pediatrics (License #MD60082435 in WA)

🟢
Initial NPI Registration & Enumeration March 17, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1831168111
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 17, 2006
Last Update: June 18, 2026
Sole Proprietor: No

Mailing Address

661 W 1st St Ste G

Tustin, CA 927802939

Phone: 7146659890

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.