CALVIN KUO-YANG CHEN MD
NPI 1831168111
Pediatrics in Tustin, CA

Q: What is Calvin Chen's NPI number?

The NPI number for Calvin Chen is 1831168111. It was assigned to this individual provider in the NPPES registry on March 17, 2006.

Q: What is Calvin Chen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Calvin Chen was last updated on June 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 March 17, 2006PECOS Enrolled

661 W 1ST ST STE G, TUSTIN, CA 92780(714) 665-9890(714) 665-9891 Get Directions Write a Review

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

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About Calvin Kuo-yang Chen Md NPPES

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

CALVIN KUO-YANG CHEN MD (NPI 1831168111) is an individual pediatrics provider in Tustin, California, licensed in California (A78000) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1831168111

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameCALVIN KUO-YANG CHENCredential: MD

Location Address661 W 1ST ST STE GTustin, CA 92780-2939

Mailing Address661 W 1st St Ste GTustin, CA 92780-2939 · (714) 665-9890 · Fax (714) 665-9891

Phone(714) 665-9890

Fax(714) 665-9891

Sole ProprietorNo

Enumeration DateMarch 17, 2006

Last NPPES UpdateJune 18, 2026

NPPES CertifiedJune 18, 2026

✔ NPI 1831168111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in CA · A78000✔ Licensed in WA · MD60082435

Definition

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.

661 W 1ST ST STE G, Tustin, CA 92780

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Secondary Practice Locations 2

Location 111180 Warner Ave Ste 353Fountain Valley, CA 92708-4098 · Phone (714) 968-6789 · Fax (714) 202-2626

Location 29918 Katella Ave Ste A-CAnaheim, CA 92804-6465 · Phone (714) 644-9494 · Fax (714) 644-9894

Other Identifiers 1

Medicaid1831168111CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Calvin Kuo-yang Chen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Calvin Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Families Together Of Orange County

Same address

Clinic/Center

661 W 1ST ST, STE. G
Tustin, CA 92780

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

NPI 1194122457 (714) 665-9890

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92780 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 20

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

NICOLE ROLLE NOCHE NP

Nurse Practitioner (Women's Health)