Xi Chen, M.D., PH.D.,
Sleep Medicine (Psychiatry & Neurology) Physician · Boston, MA
Xi Chen, M.D., PH.D., is a sleep medicine (psychiatry & neurology) physician with a practice address in Boston, Massachusetts, and NPI 1285940973, issued on Aug 19, 2010. Check the license (Massachusetts 254850, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Xi Chen
- Credential
- M.D., PH.D.,
- Primary taxonomy
- Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
- License number
- 254850 MA
Self-reported in NPPES; status is on the state search - Practice location
- 133 Brookline Ave, Boston, MA 02215
- Phone
- (617) 421-1020
- Enumerated
- Aug 19, 2010
- Record last updated
- Feb 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (617) 421-1063
- Medicare enrollment
- Enrolled (PECOS I20150924002722); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (psychiatry & neurology) physician records → All 15 in Massachusetts → Look up another NPI →
Also registered at 133 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shari Abramowitz, M.D.Pediatrics Physician1558346593
- Maansi AgheraAudiologist1225887292
- Nathalie Alexis, PSY.D.Clinical Psychologist1245886993
- Marina Alfisher, MDDiagnostic Radiology Physician1417925207
- Andrew Allmendinger, DODiagnostic Radiology Physician1972820942
- Dana An, LCSWClinical Social Worker1215108238
Verify Xi Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 254850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024
142 Medicare Part D claims for 33 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Gabapentin59 claims
- Pramipexole Dihydrochloride15 claims
- Zolpidem Tartrate12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Atrius Health IncDedham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xi Chen among 15 sleep medicine (psychiatry & neurology) physician records in Massachusetts
Xi Chen, M.D., PH.D., is one of 15 sleep medicine (psychiatry & neurology) physician records with a practice address in Massachusetts. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 47% of them.
- NPI issued2010 · 47% of these records are older, 47% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2000 · median 2003 among the 12 with a school on file
- Record last updated2021 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084S0012X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Psychiatry & Neurology) Physician providers in Massachusetts
There are 15 sleep medicine (psychiatry & neurology) physician records in Massachusetts.
All 15 in Massachusetts → Every provider in Boston → Sleep Medicine (Psychiatry & Neurology) Physician nationwide →
The 8 sleep medicine (psychiatry & neurology) physician records with the nearest ZIP codes
- Karim Awad, MDBoston, MA 022151295939189
- Jonathan Yeung LaiwahBoston, MA 022151033728084
- Naina Limbekar, MDBoston, MA 021181619345121
- Karen Lee, MDBoston, MA 021151578725685
- Maamie Asamoah-MensahBoston, MA 021141295312361
- Jeffrey Kim, MDBoston, MA 021141487243408
- John Winkelman, PHD/MDBoston, MA 021141619950045
- Ivia Rivera Agosto, M.D.Burlington, MA 018051790103299
Common questions
What is Xi Chen, M.D., PH.D.,'s NPI number?
Xi Chen, M.D., PH.D.,'s National Provider Identifier (NPI) is 1285940973, issued on Aug 19, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Xi Chen, M.D., PH.D., located?
The NPPES record lists a practice address at 133 Brookline Ave, Boston, MA, 02215. Phone: (617) 421-1020. Providers update this record themselves, so call before visiting.
How can I verify Xi Chen, M.D., PH.D.,'s license?
NPPES lists Massachusetts license number 254850, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Xi Chen, M.D., PH.D., prescribe under Medicare Part D?
In 2024, Xi Chen, M.D., PH.D., had 142 Medicare Part D claims for 33 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.