DR. SEAN WILLIAM GALLAGHER M.D.
NPI 1477818250
Anesthesiology - Pediatric Anesthesiology in Boston, MA
About Dr. Sean William Gallagher M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SEAN WILLIAM GALLAGHER M.D. (NPI 1477818250) is an individual pediatric anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (267497) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, is affiliated with Tufts Medical Center, and maintains a secondary practice location in Dorchester.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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 and accepts Medicare assignment
Dr. Sean William Gallagher 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 Reassignment
Medicare enrollment records show Sean Gallagher reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 246 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Tufts Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02111 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 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Sean Gallagher's NPI number?
The NPI number for Sean Gallagher is 1477818250. It was assigned to this individual provider in the NPPES registry on July 9, 2012.
Where is Sean Gallagher located?
Sean Gallagher practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.
What is Sean Gallagher's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Sean Gallagher enrolled in Medicare?
Yes. Sean Gallagher 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 Sean Gallagher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Gallagher reassigns Medicare benefits to Pratt Anesthesiology Associates, 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 Sean Gallagher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sean Gallagher accept?
Health plans from Taro Health list Sean Gallagher 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 Sean Gallagher affiliated with any hospitals?
According to CMS data, Sean Gallagher is affiliated with Tufts Medical Center.
When was this NPI record last updated?
The NPPES record for Sean Gallagher was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. Sean William Gallagher, M.D. · NPI 1477818250
Pediatric Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 9, 2012.
## Identity
- **NPI:** 1477818250 (Entity type: Individual)
- **Enumerated:** July 9, 2012
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** 267497 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 WASHINGTON ST, Boston, MA 02111-1552
- **Phone:** (617) 636-5000
## 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:** Pratt Anesthesiology Associates, Inc (NPI 1326085390, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** March 17, 2018
- **Other identifiers:** Medicaid 267497 (MA); Medicaid 110071765A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1477818250) · Data from the CMS NPPES public registry.