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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CHRISTOPHER RYAN CHEN
NPI 1700312840
Internal Medicine - Clinical Cardiac Electrophysiology in Laguna Hills, CA

Active since May 10, 2017PECOS EnrolledAccepts Medicare Assignment
24022 CALLE DE LA PLATA STE 500, LAGUNA HILLS, CA 92653(877) 430-7337(714) 602-2193 Get Directions Write a Review

NPPES record last updated: September 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 17, 2026, May 10, 2017 (2 updates tracked since 2017).

About Christopher Ryan Chen NPPES

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

CHRISTOPHER RYAN CHEN (NPI 1700312840) is an individual clinical cardiac electrophysiology provider in Laguna Hills, California, licensed in California (A185828) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in Irvine, and is a graduate of Texas A & M University System, Hsc, College Of Medicine (2017).

NPPES Registry Identity

NPI1700312840
Entity TypeIndividualMale
Primary Taxonomy207RC0001X
Provider Legal NameCHRISTOPHER RYAN CHEN
Location Address24022 CALLE DE LA PLATA STE 500Laguna Hills, CA 92653-7612
Mailing Address35 Creek RdIrvine, CA 92604-4724 · (877) 430-7337 · Fax (714) 602-2193
Phone(877) 430-7337
Fax(714) 602-2193
Sole ProprietorYes
Medical School CMSTexas A & M University System, Hsc, College Of MedicineGraduated 2017
Enumeration DateMay 10, 2017
Last NPPES UpdateSeptember 17, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2026
✔ NPI 1700312840 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RC0001X
License✔ Licensed in CA · A185828
Definition
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License A185828 (CA)
24022 CALLE DE LA PLATA STE 500, Laguna Hills, CA 92653
Open in Google Maps ↗

Secondary Practice Location 1

Location 135 Creek RdIrvine, CA 92604-4724 · Phone (877) 430-7337 · Fax (714) 602-2193

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Christopher Ryan Chen is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123444130
PECOS Enrollment IDI20250602003301
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 Christopher Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pacific Cardiovascular Associates Medical Group, Inc.
6.7 mi
Cardiovascular Disease
35 CREEK RD
Irvine, CA 92604
  • Reassigned Medicare billing, California enrollment
  • 45 clinicians in this Medicare group
NPI 1700821691 (714) 445-0220

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 92653 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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 7

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

DR. CHENG-HAN CHEN M.D., PH.D.
Internal Medicine (Cardiovascular Disease)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
DR. SCOTT WILLIAM ARD M.D.
Internal Medicine (Cardiovascular Disease)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
GEORGE M TADROS M.D.
Internal Medicine (Interventional Cardiology)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
PEJMAN RAEISI-GIGLOU DO
Internal Medicine (Cardiovascular Disease)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
MIMI TARA TAKIGAWA FNP-C
Nurse Practitioner (Family)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
DR. JOHN JAMES HOLLOWED JR. MD
Internal Medicine (Interventional Cardiology)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337
KHYATI PANDYA M.D.
Pediatrics (Pediatric Cardiology)
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653
Orange County (877) 430-7337

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christopher Chen's NPI number?

The NPI number for Christopher Chen is 1700312840. It was assigned to this individual provider in the NPPES registry on May 10, 2017.

Where is Christopher Chen located?

Christopher Chen practices at 24022 Calle De La Plata Ste 500, Laguna Hills, CA 92653. The listed phone number is (877) 430-7337.

What is Christopher Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Christopher Chen enrolled in Medicare?

Yes. Christopher Chen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Christopher Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Chen reassigns Medicare benefits to Pacific Cardiovascular Associates Medical Group, Inc. (Irvine, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christopher Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Christopher Chen was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 days 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.