Quick answers
- Which hospitals does Seymour Katz work at?
- Medicare's official clinician data lists Seymour Katz at 1 hospital: NYU Langone Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seymour Katz see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY and New Hyde Park, NY. Call before your visit to confirm the address.
- What is Seymour Katz's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Seymour Katz accept Medicare assignment?
- Yes. Medicare's clinician data says Seymour Katz 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.
- Does Seymour Katz offer telehealth?
- Medicare's clinician data says Seymour Katz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Seymour Katz?
- (212) 263-9700, as listed in official Medicare / NPI Registry data.
- What is Seymour Katz's NPI number?
- 1255337424. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seymour Katz works
Medicare's Facility Affiliation Data lists Seymour Katz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- NYU Langone HospitalsNew York, NY · Acute Care Hospital · CCN 330214
Practice locations
Addresses where Seymour Katz is enrolled with Medicare (CMS data updated 2026-10-02).
- 111 BroadwayNew York, NY 10006 (212) 263‑9700
- 1991 Marcus Ave, Suite 101New Hyde Park, NY 11042 (516) 365‑4949
Group practices
Medicare enrollment lists Seymour Katz as a member of this group (CMS data updated 2026-10-02).
- New York University6,134 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 1964 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255337424 |
| 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