DR. PETER GRANT MILLER M.D.
NPI 1720426281
Internal Medicine - Medical Oncology in Boston, MA
About Dr. Peter Grant Miller M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETER GRANT MILLER M.D. (NPI 1720426281) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (266379) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Harvard Medical School (2013).
NPPES Registry Identity
Specialties & Licenses 3
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. Peter Grant Miller 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
4Medicare enrollment records show Peter Miller 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
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,026 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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
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.
Massachusetts General 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 Peter Miller's NPI number?
The NPI number for Peter Miller is 1720426281. It was assigned to this individual provider in the NPPES registry on June 6, 2013.
Where is Peter Miller located?
Peter Miller practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.
What is Peter Miller's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Peter Miller enrolled in Medicare?
Yes. Peter Miller 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 Peter Miller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Miller reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Dana-Farber Cancer Institute, Inc. (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, 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 Peter Miller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Peter Miller accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Peter Miller 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 Peter Miller affiliated with any hospitals?
According to CMS data, Peter Miller is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Peter Miller was last updated on March 31, 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. Peter Grant Miller, M.D. · NPI 1720426281
Medical Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 6, 2013.
## Identity
- **NPI:** 1720426281 (Entity type: Individual)
- **Enumerated:** June 6, 2013
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 266379 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 726-2000
## 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:** 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); Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2013
## Record status
- **NPPES last updated:** March 31, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1720426281) · Data from the CMS NPPES public registry.