Quick answers
- Does Sarah M. O'Neill accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah M. O'Neill 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 Sarah M. O'Neill see?
- In 2024, CMS data shows 278 Original Medicare patients and 555 services for Sarah M. O'Neill. This counts Original Medicare only and measures volume, not quality.
- What is Sarah M. O'Neill's NPI number?
- 1700400728. 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 Sarah M. O'Neill, 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 | 278 |
|---|---|
| Services billed to Medicare | 555 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)232 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)62 services
- Ultrasound study of one arm or leg veins with compression and maneuvers (93971)49 services
- Ultrasound of both sides of head and neck blood flow (93880)46 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)45 services
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%
- Arthritis61%
- Diabetes37%
- Ischemic heart disease35%
- Atrial fibrillation30%
Hospitals where Sarah M. O'Neill works
Medicare's Facility Affiliation Data lists Sarah M. O'Neill 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.
- Novant Health East Cooper Medical CenterMount Pleasant, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420089
Practice locations
Addresses where Sarah M. O'Neill is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1625 Hospital DrMt Pleasant, SC 29464
- 1625 Hospital Dr, Suite 370Mount Pleasant, SC 29464 (843) 960‑9712
- 2000 Hospital DrMount Pleasant, SC 29464 (843) 881‑0100
- 2000 Hospital DrMt Pleasant, SC 29464 (843) 884‑5133
- 7 S Alliance Dr, Suite 111bGoose Creek, SC 29445
Group practices
Medicare enrollment lists Sarah M. O'Neill as a member of this group (CMS data updated October 2, 2026).
- East Cooper Physician Group LLC136 clinicians in the group
Specialties
- Physician Assistantprimary
Find other clinicians: Physician Assistant, South Carolina →
Other physician assistants in Mt Pleasant
Clinicians with the same Medicare primary specialty in Mt Pleasant, SC — not a recommendation.
Other clinicians in East Cooper Physician Group LLC
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) | 1700400728 |
| 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