DR. BRETT D. NELSON M.D., M.P.H., DTM&H
NPI 1073780839
Pediatrics in Boston, MA
About Dr. Brett D. Nelson M.d., M.p.h., Dtm&h NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRETT D. NELSON M.D., M.P.H., DTM&H (NPI 1073780839) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (225993) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Brett D. Nelson M.d., M.p.h., Dtm&h is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Brett Nelson reassigns Medicare billing to 4 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
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 719 clinicians in this Medicare group
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 423 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 Brett Nelson's NPI number?
The NPI number for Brett Nelson is 1073780839. It was assigned to this individual provider in the NPPES registry on May 12, 2008.
Where is Brett Nelson located?
Brett Nelson practices at 55 Fruit St Department Of Pediatrics, Boston, MA 02114. The listed phone number is (617) 726-2000.
What is Brett Nelson's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Brett Nelson enrolled in Medicare?
Yes. Brett Nelson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Brett Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Nelson reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Cambridge Public Health Commission (Cambridge, MA) and Mount Auburn Professional Services Inc (Cambridge, 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 Brett Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Nelson accept?
Health plans from Taro Health list Brett Nelson 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 Brett Nelson was last updated on February 18, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Brett D. Nelson, M.D., M.P.H., DTM&H · NPI 1073780839
Pediatrics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 12, 2008.
## Identity
- **NPI:** 1073780839 (Entity type: Individual)
- **Enumerated:** May 12, 2008
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 225993 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, DEPARTMENT OF PEDIATRICS, Boston, MA 02114-2621
- **Phone:** (617) 726-2000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Cambridge Public Health Commission (NPI 1932313228, Cambridge, MA); Mount Auburn Professional Services Inc (NPI 1992750996, Cambridge, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 18, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1073780839) · Data from the CMS NPPES public registry.