Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Wei Sum Li, MD

Works at hospitals in Boston, MA · Salem, MA · Massachusetts

Summary

Wei Sum Li, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Boston, MA and Salem, MA. NPI 1629425046. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Wei Sum Li, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
10Years since medical school (graduated 2016)
University Of Massachusetts Medical SchoolMedical school
FemaleGender (as listed)
Massachusetts General Physicians Organization IncGroup practice (+2 more)

Quick answers

Which hospitals does Wei Sum Li work at?
Medicare's official clinician data lists Wei Sum Li at 3 hospitals: Massachusetts Eye and Ear Infirmary -, Massachusetts General Hospital and North Shore Medical Center -. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Wei Sum Li see patients?
Medicare's clinician data lists 3 practice locations, including Jamaica Plain, MA and Boston, MA. Call before your visit to confirm the address.
What is Wei Sum Li's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Wei Sum Li accept Medicare assignment?
Yes. Medicare's clinician data says Wei Sum Li accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Wei Sum Li offer telehealth?
Medicare's clinician data says Wei Sum Li offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Wei Sum Li?
(617) 983-7000, as listed in official Medicare / NPI Registry data.
What is Wei Sum Li's NPI number?
1629425046. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Wei Sum Li works

Medicare's Facility Affiliation Data lists Wei Sum Li at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Wei Sum Li is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Wei Sum Li as a member of these groups (CMS data updated 2026-10-02).

  • Massachusetts General Physicians Organization Inc3,558 clinicians in the group
  • Brigham and Womens Physicians Organization Inc2,994 clinicians in the group
  • The General Hospital Corporation1,267 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Jamaica Plain

Clinicians with the same Medicare primary specialty in Jamaica Plain, MA — not a recommendation.

All internal medicine doctors in Jamaica Plain →

Clinician information

CredentialMD
Medical schoolUniversity Of Massachusetts Medical School
Graduation year2016
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1629425046
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians