SAMUEL MORRISON STONE MD
NPI 1750944971
Internal Medicine in Boston, MA
About Samuel Morrison Stone Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAMUEL MORRISON STONE MD (NPI 1750944971) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (280277) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of University Of Massachusetts Medical School (2019).
NPPES Registry Identity
Specialties & Licenses 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
Samuel Morrison Stone Md 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
3Medicare enrollment records show Samuel Stone reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Medford, MA 02155
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Melrosewakefield Healthcare, Inc
- 140 clinicians in this Medicare group
Medford, MA 02155
- Reassigned Medicare billing, Massachusetts enrollment
- 246 clinicians in this Medicare group
Newton, MA 02462
- Reassigned Medicare billing, Massachusetts enrollment
- 992 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MANewton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAFaulkner Hospital-Brigham And Women's
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 Samuel Stone's NPI number?
The NPI number for Samuel Stone is 1750944971. It was assigned to this individual provider in the NPPES registry on April 15, 2019.
Where is Samuel Stone located?
Samuel Stone practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.
What is Samuel Stone's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Samuel Stone enrolled in Medicare?
Yes. Samuel Stone 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 Samuel Stone's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Stone reassigns Medicare benefits to 3 organizations: Hallmark Health System Inc (Medford, MA), Hallmark Health Medical Associates Inc (Medford, MA) and Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, 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 Samuel Stone's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Samuel Stone accept?
Health plans from Anthem Blue Cross and Blue Shield list Samuel Stone 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 Samuel Stone affiliated with any hospitals?
According to CMS data, Samuel Stone is affiliated with Massachusetts General Hospital, Newton-Wellesley Hospital, Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for Samuel Stone was last updated on June 21, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Samuel Morrison Stone, MD · NPI 1750944971
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 15, 2019.
## Identity
- **NPI:** 1750944971 (Entity type: Individual)
- **Enumerated:** April 15, 2019
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 280277 (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:** 3 organizations under Medicare reassignment (form CMS-855R): Hallmark Health System Inc (NPI 1275673667, Medford, MA); Hallmark Health Medical Associates Inc (NPI 1770563900, Medford, MA); Mass General Brigham Medical Group Suburban Massachusetts Inc (NPI 1538191218, Newton, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Massachusetts Medical School, class of 2019
## Record status
- **NPPES last updated:** June 21, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1750944971) · Data from the CMS NPPES public registry.