Quick answers
- Which hospitals does Ryan D. Patterson work at?
- Medicare's official clinician data lists Ryan D. Patterson at 4 hospitals: North Shore University Hospital, Ns/Lij HS Southside Hospital, Peconic Bay Medical Center and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan D. Patterson see patients?
- Medicare's clinician data lists 1 practice location in Riverhead, NY. Call before your visit to confirm the address.
- What is Ryan D. Patterson's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Ryan D. Patterson accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan D. Patterson 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 Ryan D. Patterson?
- (631) 727-7773, as listed in official Medicare / NPI Registry data.
- What is Ryan D. Patterson's NPI number?
- 1225488497. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan D. Patterson works
Medicare's Facility Affiliation Data lists Ryan D. Patterson 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
- Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · CCN 330043
- Peconic Bay Medical CenterRiverhead, NY · Acute Care Hospital · CCN 330107
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where Ryan D. Patterson is enrolled with Medicare (CMS data updated 2026-10-02).
- 951 Roanoke AveRiverhead, NY 11901 (631) 727‑7773
Group practices
Medicare enrollment lists Ryan D. Patterson as a member of this group (CMS data updated 2026-10-02).
- Peconic Cardiology PC19 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Riverhead
Clinicians with the same Medicare primary specialty in Riverhead, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225488497 |
| 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