Zeina R. Karam, MD

Medicare activity in 2024

Official CMS public-use data for Zeina R. Karam, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)310 services
2. Home dialysis services per month (20 years or older) (90966)87 services
3. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)76 services
4. Dialysis services, 2-3 physician visits per month (20 years or older) (90961)66 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)36 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%
• Diabetes55%
• Arthritis51%
• Ischemic heart disease44%

Hospitals where Zeina R. Karam works

Medicare's Facility Affiliation Data lists Zeina R. Karam 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.

• Hermann Area District HospitalHermann, MO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 261314
• Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260020
• Mercy Hospital WashingtonWashington, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260052

Practice locations

Addresses where Zeina R. Karam is enrolled with Medicare (CMS data updated October 2, 2026).

• 901 Patients 1st Dr, Suite 3300Washington, MO 63090 (636) 231‑6260

Group practices

Medicare enrollment lists Zeina R. Karam as a member of this group (CMS data updated October 2, 2026).

• Mercy Clinic Nephrology, LLC10 clinicians in the group

Specialties

• Nephrologyprimary

Find other Nephrology doctors in Missouri →

Other nephrologists in Missouri

Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.

• Irme Akhtar, MD
• Ryan M. Lustig, MD
• Sarah Sundet
• Nurelign G. Abebe, MD
• Muhammad Yasir Baloch, MD
• Alan Yu, MD
• Wasey A. Jabbar, MD
• Rajarshi Bhadra, MD

All nephrologists in Missouri →

Other clinicians in Mercy Clinic Nephrology, LLC

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

• Elizabeth S. Eliopoulos
• Brian R. Ringhofer, MD
• Guangchen Zou, MD
• Olga Postovitenko, MD
• Robyn H. Jacobs, MD
• Kristina M. Hill

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