Quick answers
- Which hospitals does Mordecai A. Dicker work at?
- Medicare's official clinician data lists Mordecai A. Dicker at 1 hospital: North Shore University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mordecai A. Dicker see patients?
- Medicare's clinician data lists 2 practice locations, including Massapequa, NY and Great Neck, NY. Call before your visit to confirm the address.
- What is Mordecai A. Dicker's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Mordecai A. Dicker accept Medicare assignment?
- Yes. Medicare's clinician data says Mordecai A. Dicker 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 Mordecai A. Dicker offer telehealth?
- Medicare's clinician data says Mordecai A. Dicker offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mordecai A. Dicker?
- (516) 795-5523, as listed in official Medicare / NPI Registry data.
- What is Mordecai A. Dicker's NPI number?
- 1437169117. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mordecai A. Dicker works
Medicare's Facility Affiliation Data lists Mordecai A. Dicker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
Practice locations
Addresses where Mordecai A. Dicker is enrolled with Medicare (CMS data updated 2026-10-02).
- 187 Veterans BlvdMassapequa, NY 11758 (516) 795‑5523
- 233 E Shore Rd, Suite 101Great Neck, NY 11023 (516) 487‑2444
Group practices
Medicare enrollment lists Mordecai A. Dicker as a member of this group (CMS data updated 2026-10-02).
- Gastrointestinal Care of Long Island PLLC183 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Massapequa
Clinicians with the same Medicare primary specialty in Massapequa, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University Medical College - Nlg |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437169117 |
| 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