THOMAS DEAN SEQUIST MD
NPI 1982660288
Internal Medicine in Boston, MA
About Thomas Dean Sequist Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS DEAN SEQUIST MD (NPI 1982660288) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (213432) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Harvard Medical School (1999).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Thomas Dean Sequist Md 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.
Medicare Billing Reassignment
Medicare enrollment records show Thomas Sequist reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAFaulkner Hospital-Brigham And Women's
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 5
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02120
BOSTON, MA 02120
BOSTON, MA 02120
BOSTON, MA 02120
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 Thomas Sequist's NPI number?
The NPI number for Thomas Sequist is 1982660288. It was assigned to this individual provider in the NPPES registry on April 25, 2006.
Where is Thomas Sequist located?
Thomas Sequist practices at 1620 Tremont Street Brigham And Womens Hospital Department Of Medicine, Boston, MA 02120. The listed phone number is (617) 525-7509.
What is Thomas Sequist's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Thomas Sequist enrolled in Medicare?
Yes. Thomas Sequist 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.
Which organization bills Medicare for Thomas Sequist's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Sequist reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Sequist's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Sequist accept?
Health plans from Taro Health list Thomas Sequist as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Thomas Sequist affiliated with any hospitals?
According to CMS data, Thomas Sequist is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for Thomas Sequist was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Thomas Dean Sequist, MD · NPI 1982660288
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 25, 2006.
## Identity
- **NPI:** 1982660288 (Entity type: Individual)
- **Enumerated:** April 25, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 213432 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1620 TREMONT STREET, BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF MEDICINE, Boston, MA 02120
- **Phone:** (617) 525-7509
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1999
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1982660288) · Data from the CMS NPPES public registry.