Quick answers
- Which hospitals does Steven O. Marx work at?
- Medicare's official clinician data lists Steven O. Marx at 1 hospital: New York-Presbyterian Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven O. Marx see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY. Call before your visit to confirm the address.
- What is Steven O. Marx's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Steven O. Marx accept Medicare assignment?
- Yes. Medicare's clinician data says Steven O. Marx 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 Steven O. Marx?
- (212) 305-4931, as listed in official Medicare / NPI Registry data.
- What is Steven O. Marx's NPI number?
- 1548277619. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven O. Marx works
Medicare's Facility Affiliation Data lists Steven O. Marx at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · CCN 330101
Practice locations
Addresses where Steven O. Marx is enrolled with Medicare (CMS data updated 2026-10-02).
- 1150 Saint Nicholas AveNew York, NY 10032 (212) 305‑4931
- 622 W 168th StNew York, NY 10032 (212) 305‑9876
Group practices
Medicare enrollment lists Steven O. Marx as a member of this group (CMS data updated 2026-10-02).
- Trustees of Columbia University in the City of New York2,296 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albany Medical College Of Union University |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548277619 |
| 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