Quick answers
- Which hospitals does Haley A. Riordan work at?
- Medicare's official clinician data lists Haley A. Riordan at 2 hospitals: St Charles Hospital and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Haley A. Riordan see patients?
- Medicare's clinician data lists 1 practice location in East Setauket, NY. Call before your visit to confirm the address.
- What is Haley A. Riordan's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Haley A. Riordan accept Medicare assignment?
- Yes. Medicare's clinician data says Haley A. Riordan 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 Haley A. Riordan?
- (631) 444-4233, as listed in official Medicare / NPI Registry data.
- What is Haley A. Riordan's NPI number?
- 1366843781. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Haley A. Riordan works
Medicare's Facility Affiliation Data lists Haley A. Riordan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Charles HospitalPort Jefferson, NY · Acute Care Hospital · CCN 330246
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where Haley A. Riordan is enrolled with Medicare (CMS data updated 2026-10-02).
- 14 Technology Dr, Suite 11East Setauket, NY 11733 (631) 444‑4233
Group practices
Medicare enrollment lists Haley A. Riordan as a member of this group (CMS data updated 2026-10-02).
- Stony Brook Orthopaedic Associates, University Faculty Practice Corpor49 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in East Setauket
Clinicians with the same Medicare primary specialty in East Setauket, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366843781 |
| 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