Leonid A. Klopouh, MD

Medicare activity in 2024

Official CMS public-use data for Leonid A. Klopouh, 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)258 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)232 services
3. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)168 services
4. Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes (99153)151 services
5. Hemodialysis procedure with physician evaluation (90935)123 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%
• Diabetes68%
• Heart failure54%
• Arthritis49%

Hospitals where Leonid A. Klopouh works

Medicare's Facility Affiliation Data lists Leonid A. Klopouh 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.

• Levindale Hebrew Geriatric Center and HospitalBaltimore, MD · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 210064
• MedStar Union Memorial HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210024
• Sinai Hospital of BaltimoreBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210012

Practice locations

Addresses where Leonid A. Klopouh is enrolled with Medicare (CMS data updated October 2, 2026).

• 25 Crossroads Dr, Suite 205Owings Mills, MD 21117 (410) 602‑7792

Group practices

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

• Mid-Atlantic Nephrology Associates PA61 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in Maryland →

Other nephrologists in Owings Mills

Clinicians with the same Medicare primary specialty in Owings Mills, MD — not a recommendation.

• Anitha Nallu, MD
• Mahmudul Haque, MD
• Reshma J. Kariyil, MD
• Manju A. Mavanur, MD
• Eugene Essandoh, MD
• Thabiso M. Phiri, MD
• Hossam Abdalla, MD

All nephrologists in Owings Mills →

Other clinicians in Mid-Atlantic Nephrology Associates PA

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

• Rosemary W. Dodd, NP
• Danielle H. Sutton, NP
• Saira Amir, MD
• Serban Dragoi, MD
• Gerard M. Lowder, MD
• Rochelle M. Cunningham, 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