Quick answers
- Which hospitals does Geren S. Stone work at?
- Medicare's official clinician data lists Geren S. Stone at 1 hospital: Massachusetts General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Geren S. Stone see patients?
- Medicare's clinician data lists 5 practice locations, including Boston, MA. Call before your visit to confirm the address.
- What is Geren S. Stone's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Addiction Medicine.
- Does Geren S. Stone accept Medicare assignment?
- Yes. Medicare's clinician data says Geren S. Stone accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Geren S. Stone?
- (617) 371-1723, as listed in official Medicare / NPI Registry data.
- What is Geren S. Stone's NPI number?
- 1790980225. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Geren S. Stone works
Medicare's Facility Affiliation Data lists Geren S. Stone at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · CCN 220071
Practice locations
Addresses where Geren S. Stone is enrolled with Medicare (CMS data updated 2026-10-02).
- 17 Court StBoston, MA 02108 (617) 371‑1723
- 243 Charles St, Suite 1107Boston, MA 02114 (617) 273‑5699
- 363 Albany StBoston, MA 02118 (857) 654‑1865
- 39 Boylston StBoston, MA 02116 (617) 542‑4704
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
Group practices
Medicare enrollment lists Geren S. Stone as a member of these groups (CMS data updated 2026-10-02).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
- Boston Health Care for the Homeless Program, Inc.72 clinicians in the group
Specialties
- Internal Medicineprimary
- Addiction Medicinealso
Other internal medicine doctors in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790980225 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians