MACLEAN CARROLL SELLARS MD, PHD
NPI 1326402272
Internal Medicine in Boston, MA
About Maclean Carroll Sellars Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MACLEAN CARROLL SELLARS MD, PHD (NPI 1326402272) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (271109) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and is a graduate of University Of California, Geffen School Of Medicine (2017).
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 and accepts Medicare assignment
Maclean Carroll Sellars Md, Phd 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 Maclean Sellars reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1346433257 (Massachusetts)
- 1,026 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician 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 Maclean Sellars's NPI number?
The NPI number for Maclean Sellars is 1326402272. It was assigned to this individual provider in the NPPES registry on April 7, 2016.
Where is Maclean Sellars located?
Maclean Sellars practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 724-9557.
What is Maclean Sellars's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Maclean Sellars enrolled in Medicare?
Yes. Maclean Sellars 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 Maclean Sellars's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maclean Sellars reassigns Medicare benefits to Dana-Farber Cancer Institute, 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 Maclean Sellars's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Maclean Sellars accept?
Health plans from Taro Health list Maclean Sellars 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 Maclean Sellars affiliated with any hospitals?
According to CMS data, Maclean Sellars is affiliated with Beth Israel Deaconess Medical Center and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Maclean Sellars was last updated on July 21, 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.
# Maclean Carroll Sellars, MD, PHD · NPI 1326402272
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 7, 2016.
## Identity
- **NPI:** 1326402272 (Entity type: Individual)
- **Enumerated:** April 7, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 271109 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 724-9557
## 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:** Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1326402272) · Data from the CMS NPPES public registry.