Quick answers
- Which hospitals does Leo Marcoff work at?
- Medicare's official clinician data lists Leo Marcoff at 1 hospital: Morristown Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leo Marcoff see patients?
- Medicare's clinician data lists 4 practice locations, including Morristown, NJ and Rockaway, NJ. Call before your visit to confirm the address.
- What is Leo Marcoff's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Leo Marcoff accept Medicare assignment?
- Yes. Medicare's clinician data says Leo Marcoff 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 Leo Marcoff?
- (973) 971-5596, as listed in official Medicare / NPI Registry data.
- What is Leo Marcoff's NPI number?
- 1407935398. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leo Marcoff works
Medicare's Facility Affiliation Data lists Leo Marcoff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · CCN 310015
Practice locations
Addresses where Leo Marcoff is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Madison AveMorristown, NJ 07960 (973) 971‑5596
- 111 Madison AveMorristown, NJ 07960 (973) 971‑6898
- 333 Mount Hope AveRockaway, NJ 07866
- 95 Madison Ave, Suite 204Morristown, NJ 07960 (973) 971‑7440
Group practices
Medicare enrollment lists Leo Marcoff as a member of this group (CMS data updated 2026-10-02).
- Practice Associates Medical Group1,408 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New Jersey →
Other cardiologists in Morristown
Clinicians with the same Medicare primary specialty in Morristown, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407935398 |
| 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