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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.

NANCY EVELYN CHEN M.D.
NPI 1306103742
Internal Medicine in San Jose, CA

Active since April 23, 2012PECOS Enrolled
1799 HAMILTON AVE, SAN JOSE, CA 95125(408) 889-1216(833) 449-4676 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 27, 2026, Sep 3, 2019 (2 updates tracked since 2019).

About Nancy Evelyn Chen M.d. NPPES

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

NANCY EVELYN CHEN M.D. (NPI 1306103742) is an individual internal medicine provider in San Jose, California, licensed in California (128848) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306103742
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameNANCY EVELYN CHENCredential: M.D.
Location Address1799 HAMILTON AVESan Jose, CA 95125-5425
Mailing Address1799 Hamilton AveSan Jose, CA 95125-5425 · (408) 889-1216 · Fax (833) 449-4676
Phone(408) 889-1216
Fax(833) 449-4676
Sole ProprietorYes
Enumeration DateApril 23, 2012
Last NPPES UpdateJuly 27, 20262 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1306103742 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 · 128848
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.
1799 HAMILTON AVE, San Jose, CA 95125
Open in Google Maps ↗

Other Names 1

Former Name (1)Nancy Tran Ph.d.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nancy Evelyn 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 95125 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
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.

MS. QING MU MSTCM
Acupuncturist
1799 HAMILTON AVE, SUITE 102
SAN JOSE, CA 95125
Santa Clara County (408) 264-6800
ELLEN WILLIAMS MSW, LISW-S
Social Worker (Clinical)
1799 HAMILTON AVE
SAN JOSE, CA 95125
Santa Clara County (888) 530-4415
MRS. NAVDEEP BAMRAH NP
Nurse Practitioner (Family)
1799 HAMILTON AVE
SAN JOSE, CA 95125
Santa Clara County (866) 598-6080
WELBEHEALTH BAY AREA PACE, LLC
Program of All-Inclusive Care for the Elderly (PACE) Provider Organization
1799 HAMILTON AVE
SAN JOSE, CA 95125
Santa Clara County (650) 242-5908
SHUI MEI WU
Acupuncturist
1799 HAMILTON AVE, SUITE 102
SAN JOSE, CA 95125
Santa Clara County (408) 264-6800
VIVIAN HUYEN NGUYEN PA-C
Physician Assistant
1799 HAMILTON AVE
SAN JOSE, CA 95125
Santa Clara County (888) 530-4415
LESLY MARIE DOSONO BARCENA DNP, ARNP, AGNP-C
Nurse Practitioner (Primary Care)
1799 HAMILTON AVE
SAN JOSE, CA 95125
Santa Clara County (888) 530-4415

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 Nancy Chen's NPI number?

The NPI number for Nancy Chen is 1306103742. It was assigned to this individual provider in the NPPES registry on April 23, 2012. The provider is also known as Nancy Tran Ph.D..

Where is Nancy Chen located?

Nancy Chen practices at 1799 Hamilton Ave, San Jose, CA 95125. The listed phone number is (408) 889-1216.

What is Nancy Chen's specialty?

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

Is Nancy Chen enrolled in Medicare?

Yes. Nancy Chen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Nancy Chen was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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.