Melissa A. Kershaw, DO

Medicare activity in 2024

Official CMS public-use data for Melissa A. Kershaw, 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)304 services
2. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)128 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)97 services
4. Ultrasound of heart, follow-up (93308)56 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)53 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%
• Heart failure67%
• Ischemic heart disease64%
• Arthritis59%
• Diabetes58%

Hospitals where Melissa A. Kershaw works

Medicare's Facility Affiliation Data lists Melissa A. Kershaw 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.

• Christian Hospital NortheastSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260180

Practice locations

Addresses where Melissa A. Kershaw is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 1 Memorial DrAlton, IL 62002 (618) 463‑7240
• 11133 Dunn RdSaint Louis, MO 63136 (314) 653‑5643
• 11133 Dunn Rd, Suite 2427Saint Louis, MO 63136 (314) 653‑5643
• 11155 Dunn Rd, Suite 109nSaint Louis, MO 63136 (314) 953‑8799
• 1225 Graham Rd, Suite 1220bFlorissant, MO 63031 (618) 466‑6616

Group practices

Medicare enrollment lists Melissa A. Kershaw as a member of this group (CMS data updated October 2, 2026).

• Fairview Heights Medical Group SC444 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary
• Internal Medicinealso

Find other Cardiovascular Disease (Cardiology) doctors in Illinois →

Other cardiologists in Alton

Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.

• Thomas R. King, MD
• Faye Rao, MD
• Sorin Brener, MD
• Matthew A. Fraley, MD
• Prasad V. Kandula, MD
• Pooja Sethi, MD
• Khadija Siddiqui, DO
• Suresh K. Narayanan, MD

All cardiologists in Alton →

Other clinicians in Fairview Heights Medical Group SC

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

• Satyen Patel, MD
• Omer M. Badahman, MD
• Michael G. Guignon Jr., MD
• James C. Tanner, MD
• Mark T. Klucka, DO
• Kathryn F. McKenna, NP

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