Quick answers
- Which hospitals does Dean Singer work at?
- Medicare's official clinician data lists Dean Singer at 5 hospitals: Athol Memorial Hospital, Baystate Franklin Medical Center, Baystate Medical Center, Heywood Hospital - and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dean Singer see patients?
- Medicare's clinician data lists 2 practice locations, including Greenfield, MA. Call before your visit to confirm the address.
- What is Dean Singer's specialty?
- Medicare lists Addiction Medicine as the primary specialty.
- Does Dean Singer accept Medicare assignment?
- Yes. Medicare's clinician data says Dean Singer 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 Dean Singer offer telehealth?
- Medicare's clinician data says Dean Singer offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Dean Singer?
- (413) 225-2792, as listed in official Medicare / NPI Registry data.
- What is Dean Singer's NPI number?
- 1396131538. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dean Singer works
Medicare's Facility Affiliation Data lists Dean Singer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Athol Memorial HospitalAthol, MA · Critical Access Hospital · CCN 221303
- Baystate Franklin Medical CenterGreenfield, MA · Acute Care Hospital · CCN 220016
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · CCN 220077
- Heywood Hospital -Gardner, MA · Acute Care Hospital · CCN 220095
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
Practice locations
Addresses where Dean Singer is enrolled with Medicare (CMS data updated 2026-10-02).
- 55 Federal StGreenfield, MA 01301 (413) 225‑2792
- 55 Federal St, Suite 220Greenfield, MA 01301 (413) 225‑2792
Group practices
Medicare enrollment lists Dean Singer as a member of these groups (CMS data updated 2026-10-02).
- Greenfield Primary Care PLLC7 clinicians in the group
- Bridge Psychiatry PLLC2 clinicians in the group
Specialties
- Addiction Medicineprimary
Other addiction medicine doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1396131538 |
| 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