Marsha L. Johnson Williams, MD

Medicare activity in 2024

Official CMS public-use data for Marsha L. Johnson Williams, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)441 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)243 services
3. Hospital discharge day management, more than 30 minutes (99239)131 services
4. Hospital discharge day management, 30 minutes or less (99238)11 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%
• Arthritis52%
• Chronic kidney disease52%
• Heart failure52%
• Diabetes50%

Hospitals where Marsha L. Johnson Williams works

Medicare's Facility Affiliation Data lists Marsha L. Johnson Williams 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.

• Trident Medical CenterCharleston, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420079

Practice locations

Addresses where Marsha L. Johnson Williams is enrolled with Medicare (CMS data updated October 2, 2026).

• 295 Midland PkwySummerville, SC 29485 (843) 847‑4559

Group practices

Medicare enrollment lists Marsha L. Johnson Williams as a member of this group (CMS data updated October 2, 2026).

• Southeastern Hospitalist Services PC297 clinicians in the group

Specialties

• Family Practiceprimary
• Peripheral Vascular Diseasealso

Find other Family Practice doctors in South Carolina →

Other family doctors in Summerville

Clinicians with the same Medicare primary specialty in Summerville, SC — not a recommendation.

• Beth S. Price, MD
• Barry S. Katz, MD
• Michal Kaczor, MD
• Sarah Dante, DO
• Iryna V. Polyakova, DO
• Benjamin P. Kight, DO
• John W. Campbell Iii, MD
• Laurie M. Wallace, DO

All family doctors in Summerville →

Other clinicians in Southeastern Hospitalist Services PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Emily K. Hines, DO
• John M. Simmons Iv, MD
• Sahaj D. Vallabh, MD
• Christine C. Cannon, NP
• Hilana H. Nashad, MD
• Blanche M. Telesford, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians