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STELLA XIYUN CHEN MD, PHD
NPI 1043012131
Internal Medicine in Cambridge, MA

Active since March 27, 2025PECOS Enrolled
330 MOUNT AUBURN ST, CAMBRIDGE, MA 02138(617) 492-3500 Get Directions Write a Review

NPPES record last updated: August 2, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Stella Xiyun Chen Md, Phd NPPES

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

STELLA XIYUN CHEN MD, PHD (NPI 1043012131) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (3018380) and active in the NPI registry since March 2025. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1043012131
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameSTELLA XIYUN CHENCredential: MD, PHD
Location Address330 MOUNT AUBURN STCambridge, MA 02138-5502
Mailing Address449 Canal St Apt 216Somerville, MA 02145-4348 · (510) 449-8877
Phone(617) 492-3500
Sole ProprietorNo
Enumeration DateMarch 27, 2025
Last NPPES UpdateAugust 2, 2025
NPPES CertifiedAugust 2, 2025
✔ NPI 1043012131 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 3018380
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.
330 MOUNT AUBURN ST, Cambridge, MA 02138
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stella Xiyun Chen Md, Phd 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 02138 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

MR. MIGUEL ANGEL PAZ PA-C
Physician Assistant (Surgical)
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-3500
DR. ALAAELDIN AHMED MD
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 492-3500
DR. JANE R. SHARP MD
Obstetrics & Gynecology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5151
DR. LAURA NEED MD
Pediatrics (Pediatric Cardiology)
330 MOUNT AUBURN ST, NEWBORN SERVICES
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5595
DR. VALERIE PRONIO-STELLUTO MD
Internal Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5140
DR. BENJAMIN KERMAN MD
Emergency Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5025
ANAESTHESIA ASSOCIATES OF MASSACHUSETTS, PC
Anesthesiology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5075
PAVLINA CHRYSAFI
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 492-3500

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 Stella Chen's NPI number?

The NPI number for Stella Chen is 1043012131. It was assigned to this individual provider in the NPPES registry on March 27, 2025.

Where is Stella Chen located?

Stella Chen practices at 330 Mount Auburn St, Cambridge, MA 02138. The listed phone number is (617) 492-3500.

What is Stella Chen's specialty?

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

Is Stella Chen enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Stella Chen was last updated on August 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.