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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.

MS. YI-JU CHEN M.D.
NPI 1396361093
Internal Medicine - Endocrinology, Diabetes & Metabolism in Monterey Park, CA

Active since June 19, 2020PECOS Enrolled
210 N GARFIELD AVE STE 203, MONTEREY PARK, CA 91754(626) 307-7397 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 16, 2026, May 21, 2026, Dec 5, 2023 and 3 more (6 updates tracked since 2020).

About Ms. Yi-ju Chen M.d. NPPES

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

MS. YI-JU CHEN M.D. (NPI 1396361093) is an individual endocrinology, diabetes & metabolism provider in Monterey Park, California, licensed in California (A183127) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396361093
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameMS. YI-JU CHENCredential: M.D.
Location Address210 N GARFIELD AVE STE 203Monterey Park, CA 91754-1746
Mailing Address201 N Garfield Ave Ste 203Monterey Park, CA 91754-1704 · (626) 307-7397
Phone(626) 307-7397
Sole ProprietorNo
Enumeration DateJune 19, 2020
Last NPPES UpdateSeptember 16, 20266 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2026
✔ NPI 1396361093 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A183127
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License MT221716 (PA)
210 N GARFIELD AVE STE 203, Monterey Park, CA 91754
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Yi-ju Chen M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91754 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 6

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

LING ZHANG
Nurse Practitioner (Family)
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (248) 550-3958
WENNI YIN FNP-BC
Nurse Practitioner (Family)
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (626) 307-7397
NINA TSAI
Family Medicine
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (626) 307-7397
DR. SKYLER TIENHOU CHANG DAHM, L.AC, DIPL. OM
Acupuncturist
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (626) 307-7397
LILIANA JUDITH CONEJO
Behavior Analyst
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (626) 307-7397
DR. JON YUEH KING D.C.
Chiropractor
210 N GARFIELD AVE STE 203
MONTEREY PARK, CA 91754
Los Angeles County (626) 307-7397

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 Yi-ju Chen's NPI number?

The NPI number for Yi-ju Chen is 1396361093. It was assigned to this individual provider in the NPPES registry on June 19, 2020.

Where is Yi-ju Chen located?

Yi-ju Chen practices at 210 N Garfield Ave Ste 203, Monterey Park, CA 91754. The listed phone number is (626) 307-7397.

What is Yi-ju Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Yi-ju Chen enrolled in Medicare?

Yes. Yi-ju Chen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Yi-ju Chen was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 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.