1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Psychiatry Neurology
  6. NPI Profile

XI CHEN M.D., PH.D.,
NPI 1285940973
Psychiatry & Neurology - Sleep Medicine in Boston, MA

Active since August 19, 2010PECOS EnrolledAccepts Medicare Assignment
133 BROOKLINE AVE, BOSTON, MA 02215(617) 421-1020(617) 421-1063 Get Directions Write a Review

NPPES record last updated: February 4, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 4, 2021, Mar 4, 2016 (2 updates tracked since 2016).

About Xi Chen M.d., Ph.d., NPPES

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

XI CHEN M.D., PH.D., (NPI 1285940973) is an individual sleep medicine provider in Boston, Massachusetts, licensed in Massachusetts (254850) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2000).

NPPES Registry Identity

NPI1285940973
Entity TypeIndividualFemale
Primary Taxonomy2084S0012X
Provider Legal NameXI CHENCredential: M.D., PH.D.,
Location Address133 BROOKLINE AVEBoston, MA 02215-3904
Mailing Address133 Brookline AveBoston, MA 02215-3904 · (617) 421-1020 · Fax (617) 421-1063
Phone(617) 421-1020
Fax(617) 421-1063
Sole ProprietorNo
Medical School CMSOtherGraduated 2000
Enumeration DateAugust 19, 2010
Last NPPES UpdateFebruary 4, 20212 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2021
✔ NPI 1285940973 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084S0012X
License✔ Licensed in MA · 254850
Definition
A Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
Also ListedSpecialistTaxonomy 174400000X
133 BROOKLINE AVE, Boston, MA 02215
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 and accepts Medicare assignment

Xi Chen M.d., Ph.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 ID7719148717
PECOS Enrollment IDI20150924002722
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.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Sleep study including heart rate, breathing, and sleep time 95800
A sleep study monitors your sleep patterns to evaluate your sleep quality. It records your heart rate, breathing, and actual sleep time. This information helps identify any sleep disorders, ensuring you get the rest you need for optimal health.
208 services207 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
145 services131 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
97 services97 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
20 services18 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02215 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.

Referred Medical Equipment & Supplies CMS DME claims 16

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

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
11 suppliers406 claims406 services$33.67 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
8 suppliers180 claims180 services$78.24 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
4 suppliers172 claims485 services$28.82 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
5 suppliers186 claims1,057 services$16.17 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
4 suppliers87 claims460 services$13.30 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
10 suppliers319 claims319 services$46.59 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

MRS. MELISSA ASHLEY ZIOGAS APRN-FNP
Nurse Practitioner (Family)
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-1000
SHIVAUN ELAINE PIKE NP
Nurse Practitioner (Adult Health)
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-1000
HARRIET SCHEFT M.D.
Psychiatry & Neurology (Psychiatry)
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-2040
CAROL J ZUCKERMAN M.D.
Internal Medicine
133 BROOKLINE AVE, INTERNAL MEDICINE
BOSTON, MA 02215
Suffolk County (617) 421-5804
HARVARD VANGUARD MEDICAL ASSOCIATES
Social Worker
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-1000
DIANE L. GILWORTH NP
Registered Nurse
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-6050
MARGARET SIDOR PHD, CGC
Genetic Counselor, MS
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 421-1035
NED WILSON MORSE
Technician/Technologist (Optician)
133 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (174) 211-1496

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 Xi Chen's NPI number?

The NPI number for Xi Chen is 1285940973. It was assigned to this individual provider in the NPPES registry on August 19, 2010.

Where is Xi Chen located?

Xi Chen practices at 133 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 421-1020.

What is Xi Chen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Is Xi Chen enrolled in Medicare?

Yes. Xi 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.

When was this NPI record last updated?

The NPPES record for Xi Chen was last updated on February 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.