Quick answers
- Which hospitals does Donald Sonn work at?
- Medicare's official clinician data lists Donald Sonn at 3 hospitals: Lowell General Hospital, Norwalk Hospital and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Donald Sonn see patients?
- Medicare's clinician data lists 4 practice locations, including Norwalk, CT, Chelmsford, MA and Springfield, MA. Call before your visit to confirm the address.
- What is Donald Sonn's specialty?
- Medicare lists Urology as the primary specialty.
- Does Donald Sonn accept Medicare assignment?
- Yes. Medicare's clinician data says Donald Sonn 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 Donald Sonn?
- (203) 852-2000, as listed in official Medicare / NPI Registry data.
- What is Donald Sonn's NPI number?
- 1821078296. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Donald Sonn works
Medicare's Facility Affiliation Data lists Donald Sonn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lowell General HospitalLowell, MA · Acute Care Hospital · CCN 220063
- Norwalk HospitalNorwalk, CT · Acute Care Hospital · CCN 070034
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
Practice locations
Addresses where Donald Sonn is enrolled with Medicare (CMS data updated 2026-10-02).
- 24 Stevens StNorwalk, CT 06850 (203) 852‑2000
- 31 Village SqChelmsford, MA 01824 (978) 256‑9507
- 3640 Main St, Suite 103Springfield, MA 01107 (413) 785‑5321
- 61 Locust StNorthampton, MA 01060
Group practices
Medicare enrollment lists Donald Sonn as a member of these groups (CMS data updated 2026-10-02).
- Nuvance Health Medical Practice Ct Inc747 clinicians in the group
- LGH Medical Group, Inc.166 clinicians in the group
- Urology Group of Western New England, P.C.12 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Norwalk
Clinicians with the same Medicare primary specialty in Norwalk, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821078296 |
| 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