Quick answers
- Where does Joseph A. Donnellan see patients?
- Medicare's clinician data lists 1 practice location in Hillsborough, NJ. Call before your visit to confirm the address.
- What is Joseph A. Donnellan's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Joseph A. Donnellan accept Medicare assignment?
- Medicare's clinician data says Joseph A. Donnellan may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Joseph A. Donnellan?
- (908) 725-5595, as listed in official Medicare / NPI Registry data.
- What is Joseph A. Donnellan's NPI number?
- 1649366089. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Joseph A. Donnellan is enrolled with Medicare (CMS data updated 2026-10-02).
- 422 Courtyard DrHillsborough, NJ 08844 (908) 725‑5595
Specialties
- Psychiatryprimary
Other psychiatrists in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1649366089 |
| 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
- 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