Quick answers
- Does Courtney L. O'Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says Courtney L. O'Sullivan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Courtney L. O'Sullivan see?
- In 2024, CMS data shows 15 Original Medicare patients and 18 services for Courtney L. O'Sullivan. This counts Original Medicare only and measures volume, not quality.
- What is Courtney L. O'Sullivan's NPI number?
- 1093597445. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Courtney L. O'Sullivan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 15 |
|---|---|
| Services billed to Medicare | 18 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure73%
- Atrial fibrillation73%
Hospitals where Courtney L. O'Sullivan works
Medicare's Facility Affiliation Data lists Courtney L. O'Sullivan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- UPMC MemorialYork, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390101
Practice locations
Addresses where Courtney L. O'Sullivan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1701 Innovation DrYork, PA 17408
- 1703 Innovation DrYork, PA 17408
- 2501 N 3rd St, Kline Health Center Foot and AnkleHarrisburg, PA 17110 (717) 782‑2100
- 2501 N 3rd St 2nd Fl Kline Hc, Reach ProgramHarrisburg, PA 17110 (717) 782‑2363
- 2501 N 3rd St Fl, 2 Kline Health CenterHarrisburg, PA 17110 (717) 782‑2100
Group practices
Medicare enrollment lists Courtney L. O'Sullivan as a member of this group (CMS data updated October 2, 2026).
- Pinnacle Health Medical Services1,019 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in York
Clinicians with the same Medicare primary specialty in York, PA — not a recommendation.
Other clinicians in Pinnacle Health Medical Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093597445 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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