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

Hematology/Oncology

Lecia V. Sequist, MD

Works at hospitals in Boston, MA · Newton, MA · Northampton, MA · Massachusetts

Summary

Lecia V. Sequist, MD (Hematology/Oncology) is listed by Medicare at 5 hospitals in Boston, MA, Newton, MA and Northampton, MA. NPI 1417948316. 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 Lecia V. Sequist, 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

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
27Years since medical school (graduated 1999)
Harvard Medical SchoolMedical school
FemaleGender (as listed)
Massachusetts General Physicians Organization IncGroup practice (+2 more)

Quick answers

Which hospitals does Lecia V. Sequist work at?
Medicare's official clinician data lists Lecia V. Sequist at 5 hospitals: Brigham and Women's Hospital, Massachusetts Eye and Ear Infirmary -, Massachusetts General Hospital, Newton-Wellesley Hospital and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Lecia V. Sequist see patients?
Medicare's clinician data lists 4 practice locations, including Newton, MA, Waltham, MA and Boston, MA. Call before your visit to confirm the address.
What is Lecia V. Sequist's specialty?
Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
Does Lecia V. Sequist accept Medicare assignment?
Yes. Medicare's clinician data says Lecia V. Sequist 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 Lecia V. Sequist offer telehealth?
Medicare's clinician data says Lecia V. Sequist offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Lecia V. Sequist?
(617) 219-1200, as listed in official Medicare / NPI Registry data.
What is Lecia V. Sequist's NPI number?
1417948316. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Lecia V. Sequist works

Medicare's Facility Affiliation Data lists Lecia V. Sequist 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 Lecia V. Sequist is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Lecia V. Sequist 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 Hematology/Oncology doctors in Massachusetts →

Other hematologist-oncologists in Newton

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

All hematologist-oncologists in Newton →

Clinician information

CredentialMD
Medical schoolHarvard Medical School
Graduation year1999
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1417948316
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