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JAMES YNG JEN CHEN M.D.
NPI 1265495691
Internal Medicine in San Diego, CA

Active since April 07, 2006PECOS EnrolledAccepts Medicare Assignment
11513 TRAILBROOK LN, SAN DIEGO, CA 92128(619) 955-7783(619) 793-4898 Get Directions Write a Review

NPPES record last updated: February 6, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 6, 2025, Jan 22, 2016 (2 updates tracked since 2016).

About James Yng Jen Chen M.d. NPPES

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

JAMES YNG JEN CHEN M.D. (NPI 1265495691) is an individual internal medicine provider in San Diego, California, licensed in California (A86644) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Diego, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1265495691
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJAMES YNG JEN CHENCredential: M.D.
Location Address11513 TRAILBROOK LNSan Diego, CA 92128-6340
Mailing Address11513 Trailbrook LnSan Diego, CA 92128-6340 · (619) 955-7783 · Fax (619) 793-4898
Phone(619) 955-7783
Fax(619) 793-4898
Sole ProprietorYes
Medical School CMSOtherGraduated 2002
Enumeration DateApril 7, 2006
Last NPPES UpdateFebruary 6, 20252 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2025
✔ NPI 1265495691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A86644
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
11513 TRAILBROOK LN, San Diego, CA 92128
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Secondary Practice Location 1

Location 14094 4th AveSan Diego, CA 92103-2143 · Phone (619) 515-2545

Other Identifiers 1

Medicaid00A866440CA

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

James Yng Jen Chen M.d. 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 ID7618902081
PECOS Enrollment IDI20051004001114
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 Reassignments

4

Medicare enrollment records show James Chen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Scripps Health
9.4 mi
Thoracic Surgery (Cardiothoracic Vascular Surgery)
9898 GENESEE AVE FL 3
La Jolla, CA 92037
  • Reassigned Medicare billing, California enrollment
  • 1,598 clinicians in this Medicare group
NPI 1619108503 (858) 455-6330
Scripps Health Inpatient Providers Medical Group Inc.
9.4 mi
Multi-Specialty
9888 GENESEE AVE
La Jolla, CA 92037
  • Reassigned Medicare billing, California enrollment
  • 278 clinicians in this Medicare group
NPI 1699043000 (858) 626-4123
Emergency And Acute Care Medical Corporation
11 mi
Emergency Medicine
7901 FROST ST
San Diego, CA 92123
  • Reassigned Medicare billing, California enrollment
  • 1,437 clinicians in this Medicare group
NPI 1437103942 (858) 939-3400
Family Health Centers Of San Diego, Inc.
13 mi
Federally Qualified Health Center (FQHC)
525 E MAIN ST
El Cajon, CA 92020
  • Reassigned Medicare billing, California enrollment
  • 1,100 clinicians in this Medicare group
NPI 1932561198 (619) 515-2498

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 92128 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier11 claims11 services$15.08 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers13 claims13 services$64.88 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 James Chen's NPI number?

The NPI number for James Chen is 1265495691. It was assigned to this individual provider in the NPPES registry on April 7, 2006.

Where is James Chen located?

James Chen practices at 11513 Trailbrook Ln, San Diego, CA 92128. The listed phone number is (619) 955-7783.

What is James Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is James Chen enrolled in Medicare?

Yes. James 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 organizations bill Medicare for James Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Chen reassigns Medicare benefits to 4 organizations: Scripps Health (La Jolla, CA), Scripps Health Inpatient Providers Medical Group Inc. (La Jolla, CA), Emergency And Acute Care Medical Corporation (San Diego, CA) and Family Health Centers Of San Diego, Inc. (El Cajon, CA). Each 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 James 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 James Chen was last updated on February 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.