DR. THOMAS EDWARD HAMILTON M.D.
NPI 1811991201
Surgery - Pediatric Surgery in Boston, MA
About Dr. Thomas Edward Hamilton M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS EDWARD HAMILTON M.D. (NPI 1811991201) is an individual pediatric surgery provider in Boston, Massachusetts, licensed in Maine (015360) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Philadelphia.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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. Thomas Edward Hamilton M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Thomas Hamilton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Philadelphia, PA 19104
- Reassigned Medicare billing, Pennsylvania enrollment
- 178 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.
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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Hamilton's NPI number?
The NPI number for Thomas Hamilton is 1811991201. It was assigned to this individual provider in the NPPES registry on June 13, 2005.
Where is Thomas Hamilton located?
Thomas Hamilton practices at 300 Longwood Ave Fegan 3, Boston, MA 02115. The listed phone number is (617) 355-7800.
What is Thomas Hamilton's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Thomas Hamilton enrolled in Medicare?
Yes. Thomas Hamilton is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Thomas Hamilton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Hamilton reassigns Medicare benefits to Children's Surgical Associates Ltd (Philadelphia, PA). 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 Hamilton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Hamilton accept?
Health plans from WellSense Health Plan list Thomas Hamilton 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 Thomas Hamilton was last updated on May 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Thomas Edward Hamilton, M.D. · NPI 1811991201
Pediatric Surgery physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 13, 2005.
## Identity
- **NPI:** 1811991201 (Entity type: Individual)
- **Enumerated:** June 13, 2005
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** 015360 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, FEGAN 3, Boston, MA 02115-5724
- **Phone:** (617) 355-7800
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Children's Surgical Associates Ltd (NPI 1003985854, Philadelphia, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 17, 2022
- **Other identifiers:** Medicaid 286370099 (ME)
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Source: [NPI Profile](https://npiprofile.com/npi/1811991201) · Data from the CMS NPPES public registry.