Quick answers
- Which hospitals does Clifford Masom work at?
- Medicare's official clinician data lists Clifford Masom at 3 hospitals: Massac Memorial Hospital, North Shore University Hospital and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Clifford Masom see patients?
- Medicare's clinician data lists 4 practice locations, including Harrisburg, IL, New Hyde Park, NY and Manhasset, NY. Call before your visit to confirm the address.
- What is Clifford Masom's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Clifford Masom accept Medicare assignment?
- Yes. Medicare's clinician data says Clifford Masom 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 Clifford Masom?
- (618) 253-7671, as listed in official Medicare / NPI Registry data.
- What is Clifford Masom's NPI number?
- 1942649470. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Clifford Masom works
Medicare's Facility Affiliation Data lists Clifford Masom at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Massac Memorial HospitalMetropolis, IL · Critical Access Hospital · CCN 141323
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where Clifford Masom is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Dr Warren Tuttle DrHarrisburg, IL 62946 (618) 253‑7671
- 269 -01New Hyde Park, NY 11040 (718) 470‑3000
- 300 Community DrManhasset, NY 11030 (516) 562‑3058
- 400 Pantigo PlEast Hampton, NY 11937 (631) 638‑3433
Group practices
Medicare enrollment lists Clifford Masom as a member of these groups (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
- Meeting House Lane Medical Practice PC124 clinicians in the group
- Statera Health Care LLC36 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Harrisburg
Clinicians with the same Medicare primary specialty in Harrisburg, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942649470 |
| 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