Marissa Potenza, MD

Medicare activity in 2024

Official CMS public-use data for Marissa Potenza, 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. Emergency department visit with moderate level of medical decision making (99284)74 services
2. Emergency department visit with high level of medical decision making (99285)57 services
3. Emergency department visit with low level of medical decision making (99283)32 services
4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)14 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 cholesterol66%
• Arthritis58%
• Diabetes51%
• Ischemic heart disease40%
• Chronic kidney disease33%

Hospitals where Marissa Potenza works

Medicare's Facility Affiliation Data lists Marissa Potenza 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.

• George Washington University HospitalWashington, DC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 090001

Practice locations

Addresses where Marissa Potenza is enrolled with Medicare (CMS data updated October 2, 2026).

• 900 23rd St NWWashington, DC 20037 (202) 715‑4000

Group practices

Medicare enrollment lists Marissa Potenza as a member of this group (CMS data updated October 2, 2026).

• Medical Faculty Associates, Inc672 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in District of Columbia →

Other emergency medicine doctors in Washington

Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.

• Brendan R. Furlong, MD
• Frank N. Parisi, MD
• Hallie D. Jester, MD
• Louis Piper, MD
• Lauren M. Abbott, MD
• Alexandra Doan, MD
• Jonathan Watson, MD
• Alexander Kheradi, MD

All emergency medicine doctors in Washington →

Other clinicians in Medical Faculty Associates, Inc

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

• Gregory D. Trachiotis, MD
• Carlos Olivares, NP
• Malcolm Desouza, MD
• Lynn M. Abell, MD
• Lorenzo Norris, MD
• Sarah Abey, 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