Quick answers
- Which hospitals does Jonathan Downie work at?
- Medicare's official clinician data lists Jonathan Downie at 2 hospitals: Massachusetts General Hospital and Mount Auburn Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Downie see patients?
- Medicare's clinician data lists 2 practice locations, including Cambridge, MA and Boston, MA. Call before your visit to confirm the address.
- What is Jonathan Downie's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Gastroenterology.
- Does Jonathan Downie accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Downie 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.
- Does Jonathan Downie offer telehealth?
- Medicare's clinician data says Jonathan Downie offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jonathan Downie?
- (617) 868-0880, as listed in official Medicare / NPI Registry data.
- What is Jonathan Downie's NPI number?
- 1306305503. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan Downie works
Medicare's Facility Affiliation Data lists Jonathan Downie 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
- Mount Auburn HospitalCambridge, MA · Acute Care Hospital · CCN 220002
Practice locations
Addresses where Jonathan Downie is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Mount Auburn St, Suite 316Cambridge, MA 02138 (617) 868‑0880
- 55 Fruit StBoston, MA 02114 (617) 726‑2000
Group practices
Medicare enrollment lists Jonathan Downie as a member of these groups (CMS data updated 2026-10-02).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
- The General Hospital Corporation1,267 clinicians in the group
- Mount Auburn Professional Services Inc231 clinicians in the group
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in Cambridge
Clinicians with the same Medicare primary specialty in Cambridge, MA — not a recommendation.
Clinician information
| Medical school | University Of Utah School Of Medicine |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1306305503 |
| 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