Quick answers
- Which hospitals does Jonathon H. Schwartz work at?
- Medicare's official clinician data lists Jonathon H. Schwartz at 1 hospital: Mount Auburn Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathon H. Schwartz see patients?
- Medicare's clinician data lists 3 practice locations, including Charlestown, MA, Cambridge, MA and Boston, MA. Call before your visit to confirm the address.
- What is Jonathon H. Schwartz's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Jonathon H. Schwartz accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathon H. Schwartz 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 Jonathon H. Schwartz?
- (617) 952-5000, as listed in official Medicare / NPI Registry data.
- What is Jonathon H. Schwartz's NPI number?
- 1689644932. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathon H. Schwartz works
Medicare's Facility Affiliation Data lists Jonathon H. Schwartz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Auburn HospitalCambridge, MA · Acute Care Hospital · CCN 220002
Practice locations
Addresses where Jonathon H. Schwartz is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 1st AveCharlestown, MA 02129 (617) 952‑5000
- 300 Mount Auburn StCambridge, MA 02138 (617) 499‑5112
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
Group practices
Medicare enrollment lists Jonathon H. Schwartz as a member of these groups (CMS data updated 2026-10-02).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
- Mount Auburn Professional Services Inc231 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689644932 |
| 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