Quick answers
- Which hospitals does Elissa Sy work at?
- Medicare's official clinician data lists Elissa Sy at 2 hospitals: Hillcrest Hospital South and Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Elissa Sy see patients?
- Medicare's clinician data lists 2 practice locations, including Owasso, OK and Tulsa, OK. Call before your visit to confirm the address.
- What is Elissa Sy's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Elissa Sy accept Medicare assignment?
- Yes. Medicare's clinician data says Elissa Sy 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 Elissa Sy?
- (918) 579-2300, as listed in official Medicare / NPI Registry data.
- What is Elissa Sy's NPI number?
- 1003650888. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Elissa Sy works
Medicare's Facility Affiliation Data lists Elissa Sy at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hillcrest Hospital SouthTulsa, OK · Acute Care Hospital · CCN 370202
- Hillcrest Medical CenterTulsa, OK · Acute Care Hospital · CCN 370001
Practice locations
Addresses where Elissa Sy is enrolled with Medicare (CMS data updated 2026-10-02).
- 10502 N 110th E Ave, Bailey Medical CenterOwasso, OK 74055 (918) 579‑2300
- 8801 S 101st E Ave, Hillcrest Hospital SouthTulsa, OK 74133 (919) 294‑4000
Group practices
Medicare enrollment lists Elissa Sy as a member of this group (CMS data updated 2026-10-02).
- Tulsa Hospital Medicine Physicians Group, LLC137 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Owasso
Clinicians with the same Medicare primary specialty in Owasso, OK — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003650888 |
| 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