Quick answers
- Does Susan N. O Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Susan N. O Brien 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 Susan N. O Brien see?
- In 2024, CMS data shows 422 Original Medicare patients and 2,442 services for Susan N. O Brien. This counts Original Medicare only and measures volume, not quality.
- What is Susan N. O Brien's NPI number?
- 1528001112. 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 Susan N. O Brien, 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 | 422 |
|---|---|
| Services billed to Medicare | 2,442 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,975 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)243 services
- Hospital discharge day management, more than 30 minutes (99239)209 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%
- Arthritis68%
- Ischemic heart disease55%
- Anxiety55%
- Depression50%
Practice locations
Addresses where Susan N. O Brien is enrolled with Medicare (CMS data updated October 2, 2026).
- 113 Cassel DrKingsport, TN 37660 (423) 246‑7240
- 2511 Wesley StJohnson City, TN 37601 (423) 952‑1700
- 420 Railroad StElizabethton, TN 37643 (423) 297‑1813
Group practices
Medicare enrollment lists Susan N. O Brien as a member of these groups (CMS data updated October 2, 2026).
- Southeastern Physician Services PC593 clinicians in the group
- Champion Physical Therapy LLC Halls281 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Kingsport
Clinicians with the same Medicare primary specialty in Kingsport, TN — not a recommendation.
Other clinicians in Southeastern Physician Services PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528001112 |
| 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
- 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