DR. GILLIAN JOAN LEE MD, MPH
NPI 1356964977
Preventive Medicine - Public Health & General Preventive Medicine in Boston, MA
About Dr. Gillian Joan Lee Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GILLIAN JOAN LEE MD, MPH (NPI 1356964977) is an individual public health & general preventive medicine provider in Boston, Massachusetts, licensed in Massachusetts (1023682) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Gillian Joan Lee Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Gillian Lee reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Gillian Lee's NPI number?
The NPI number for Gillian Lee is 1356964977. It was assigned to this individual provider in the NPPES registry on May 19, 2020.
Where is Gillian Lee located?
Gillian Lee practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (866) 338-2099.
What is Gillian Lee's specialty?
The primary specialty registered for this NPI is Preventive Medicine, specializing in Public Health & General Preventive Medicine, with taxonomy code 2083P0901X.
Is Gillian Lee enrolled in Medicare?
Yes. Gillian Lee is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gillian Lee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Lee reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, MA). Each 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 Gillian Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gillian Lee accept?
Health plans from Anthem Blue Cross and Blue Shield list Gillian Lee 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.
When was this NPI record last updated?
The NPPES record for Gillian Lee was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.