Quick answers
- Which hospitals does Jonathan Slater work at?
- Medicare's official clinician data lists Jonathan Slater at 5 hospitals: Baystate Medical Center, Baystate Wing Hospital, Holyoke Medical Center, Mercy Medical Ctr and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Slater see patients?
- Medicare's clinician data lists 2 practice locations, including Enfield, CT and Springfield, MA. Call before your visit to confirm the address.
- What is Jonathan Slater's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does Jonathan Slater accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Slater 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 Slater offer telehealth?
- Medicare's clinician data says Jonathan Slater offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jonathan Slater?
- (413) 867-2500, as listed in official Medicare / NPI Registry data.
- What is Jonathan Slater's NPI number?
- 1992788160. 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 Slater works
Medicare's Facility Affiliation Data lists Jonathan Slater at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · CCN 220077
- Baystate Wing HospitalPalmer, MA · Acute Care Hospital · CCN 220030
- Holyoke Medical CenterHolyoke, MA · Acute Care Hospital · CCN 220024
- Mercy Medical CtrSpringfield, MA · Acute Care Hospital · CCN 220066
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
Practice locations
Addresses where Jonathan Slater is enrolled with Medicare (CMS data updated 2026-10-02).
- 140 Hazard Ave, Suite 3Enfield, CT 06082 (413) 867‑2500
- 3550 Main St, Suite 204Springfield, MA 01107
Group practices
Medicare enrollment lists Jonathan Slater as a member of this group (CMS data updated 2026-10-02).
- Renal and Transplant Assoc of the Northeast PC7 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Connecticut
Clinicians with the same Medicare primary specialty in Connecticut — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1992788160 |
| 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