Quick answers
- Does Helen N. Johnson-Wall accept Medicare assignment?
- Yes. Medicare's clinician data says Helen N. Johnson-Wall 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 Helen N. Johnson-Wall see?
- In 2024, CMS data shows 289 Original Medicare patients and 1,212 services for Helen N. Johnson-Wall. This counts Original Medicare only and measures volume, not quality.
- What is Helen N. Johnson-Wall's NPI number?
- 1730151481. 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 Helen N. Johnson-Wall, 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 | 289 |
|---|---|
| Services billed to Medicare | 1,212 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)262 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)259 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)187 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)117 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)87 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%
- Chronic kidney disease75%
- Diabetes56%
- Arthritis49%
- Ischemic heart disease48%
Hospitals where Helen N. Johnson-Wall works
Medicare's Facility Affiliation Data lists Helen N. Johnson-Wall 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.
- Anmed HealthAnderson, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420027
- Prisma Health Baptist Easley HospitalEasley, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420015
- Prisma Health Greenville Memorial HospitalGreenville, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 420078
- Prisma Health Oconee Memorial HospitalSeneca, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420009
Practice locations
Addresses where Helen N. Johnson-Wall is enrolled with Medicare (CMS data updated October 2, 2026).
- 691 S Oak StSeneca, SC 29678 (864) 973‑9103
Group practices
Medicare enrollment lists Helen N. Johnson-Wall as a member of this group (CMS data updated October 2, 2026).
- Oconee Kidney Center LLC2 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in South Carolina
Clinicians with the same Medicare primary specialty in South Carolina — not a recommendation.
Other clinicians in Oconee Kidney Center LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| 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) | 1730151481 |
| 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