GILLIAN L MCCAFFERTY M.D.
NPI 1629335914
Emergency Medicine in Burlington, MA
About Gillian L Mccafferty M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GILLIAN L MCCAFFERTY M.D. (NPI 1629335914) is an individual emergency medicine provider in Burlington, Massachusetts, licensed in Massachusetts (262666) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Lahey Hospital & Medical Center, Burlington, and is a graduate of Tufts University School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 2
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
Gillian L Mccafferty M.d. 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 Reassignments
5Medicare enrollment records show Gillian Mccafferty reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Burlington, MA 01805
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1063447316 (Massachusetts)
- 1,574 clinicians in this Medicare group
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: East Boston Neighborhood Health Center Corp
- 456 clinicians in this Medicare group
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- 577 clinicians in this Medicare group
Nantucket, MA 02554
- Reassigned Medicare billing, Massachusetts enrollment
- 206 clinicians in this Medicare group
Nantucket, MA 02554
- Reassigned Medicare billing, Massachusetts enrollment
- 172 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 5
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lahey Hospital & Medical Center, Burlington
Acute Care Hospitals · Burlington, MANantucket Cottage Hospital
Acute Care Hospitals · Nantucket, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01805 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.
BURLINGTON, MA 01805
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 Mccafferty's NPI number?
The NPI number for Gillian Mccafferty is 1629335914. It was assigned to this individual provider in the NPPES registry on April 12, 2012.
Where is Gillian Mccafferty located?
Gillian Mccafferty practices at 41 Mall Rd Lahey Hospital And Medical Center, Burlington, MA 01805. The listed phone number is (781) 744-8085.
What is Gillian Mccafferty's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gillian Mccafferty enrolled in Medicare?
Yes. Gillian Mccafferty 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 organizations bill Medicare for Gillian Mccafferty's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Mccafferty reassigns Medicare benefits to 5 organizations: Lahey Clinic, Inc. (Burlington, MA), Neighborhealth Corporation (East Boston, MA), Internal Medical Associates-Ebnhc (East Boston, MA), Nantucket Cottage Hospital (Nantucket, MA) and Nantucket Physicians Organization (Nantucket, 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 Mccafferty's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gillian Mccafferty affiliated with any hospitals?
According to CMS data, Gillian Mccafferty is affiliated with Lahey Hospital & Medical Center, Burlington and Nantucket Cottage Hospital.
When was this NPI record last updated?
The NPPES record for Gillian Mccafferty was last updated on May 20, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Gillian L Mccafferty, M.D. · NPI 1629335914
Emergency Medicine physician in Burlington, Massachusetts. Individual provider, active in the CMS NPPES registry since April 12, 2012.
## Identity
- **NPI:** 1629335914 (Entity type: Individual)
- **Enumerated:** April 12, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 262666 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 41 MALL RD, LAHEY HOSPITAL AND MEDICAL CENTER, Burlington, MA 01805-0001
- **Phone:** (781) 744-8085 · **Fax:** (781) 744-5433
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Lahey Clinic, Inc. (NPI 1538194980, Burlington, MA); Neighborhealth Corporation (NPI 1316994411, East Boston, MA); Internal Medical Associates-Ebnhc (NPI 1558481879, East Boston, MA); Nantucket Cottage Hospital (NPI 1447214622, Nantucket, MA); Nantucket Physicians Organization (NPI 1568798510, Nantucket, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** May 20, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1629335914) · Data from the CMS NPPES public registry.