Quick answers
- Which hospitals does Stephen M. Abo work at?
- Medicare's official clinician data lists Stephen M. Abo at 5 hospitals: Clara Maass Medical Center, Cooperman Barnabas Medical Center, Hackensack Meridian Mountainside Medical, Hackensack University Medical Center and Saint Michael's Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen M. Abo see patients?
- Medicare's clinician data lists 4 practice locations, including Montclair, NJ, Belleville, NJ and Livingston, NJ. Call before your visit to confirm the address.
- What is Stephen M. Abo's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Stephen M. Abo accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen M. Abo 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 Stephen M. Abo?
- (973) 259-3555, as listed in official Medicare / NPI Registry data.
- What is Stephen M. Abo's NPI number?
- 1891717708. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen M. Abo works
Medicare's Facility Affiliation Data lists Stephen M. Abo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Clara Maass Medical CenterBelleville, NJ · Acute Care Hospital · CCN 310009
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · CCN 310076
- Hackensack Meridian Mountainside MedicalMontclair, NJ · Acute Care Hospital · CCN 310054
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · CCN 310001
- Saint Michael's Medical CenterNewark, NJ · Acute Care Hospital · CCN 310096
Practice locations
Addresses where Stephen M. Abo is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Bay Ave, Suite 1Montclair, NJ 07042 (973) 259‑3555
- 1 Clara Maass DrBelleville, NJ 07109
- 1 Clara Maass Dr, Bldg CccBelleville, NJ 07109 (973) 450‑2000
- 94 Old Short Hills RdLivingston, NJ 07039
Group practices
Medicare enrollment lists Stephen M. Abo as a member of this group (CMS data updated 2026-10-02).
- Barnabas Health Medical Group PC1,070 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Montclair
Clinicians with the same Medicare primary specialty in Montclair, NJ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of New England, College Of Osteo Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891717708 |
| 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