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

Q: 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.

Q: What is Stella Chen's specialty?

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

Q: When was this NPI record last updated?

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

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: July 26, 2026.

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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 and maintains a secondary practice location in Boston.

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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Secondary Practice Location 1

Location 1800 Washington StBoston, MA 02111-1552 · Phone (617) 636-5000

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.