Quick answers
- Which hospitals does Mark D. Weibman work at?
- Medicare's official clinician data lists Mark D. Weibman at 1 hospital: Northern Westchester Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Weibman see patients?
- Medicare's clinician data lists 2 practice locations, including Riverhead, NY and Forest Hills, NY. Call before your visit to confirm the address.
- What is Mark D. Weibman's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Mark D. Weibman accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Weibman 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 Mark D. Weibman?
- (631) 548-6000, as listed in official Medicare / NPI Registry data.
- What is Mark D. Weibman's NPI number?
- 1497725915. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark D. Weibman works
Medicare's Facility Affiliation Data lists Mark D. Weibman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · CCN 330162
Practice locations
Addresses where Mark D. Weibman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Heroes WayRiverhead, NY 11901 (631) 548‑6000
- 10201 66th RdForest Hills, NY 11375 (718) 830‑4000
Group practices
Medicare enrollment lists Mark D. Weibman as a member of this group (CMS data updated 2026-10-02).
- North Shore - Lij Anesthesiology, PC1,003 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Riverhead
Clinicians with the same Medicare primary specialty in Riverhead, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497725915 |
| 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