Maureen O Donnell, MD

Medicare activity in 2024

Official CMS public-use data for Maureen O Donnell, 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 low level od decision making, if using time, 20 minutes or more (99213)105 services
2. Partial removal of breast (19301)64 services
3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)60 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)43 services
5. Imaging of lymph nodes during surgery (38900)30 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 cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
• High blood pressure69%
• Osteoporosis49%
• Arthritis48%
• Anxiety20%

Hospitals where Maureen O Donnell works

Medicare's Facility Affiliation Data lists Maureen O Donnell 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.

• Sibley Memorial HospitalWashington, DC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 090005

Practice locations

Addresses where Maureen O Donnell is enrolled with Medicare (CMS data updated October 2, 2026).

• 5255 Loughboro Rd NWWashington, DC 20016 (202) 660‑6500
• 5255 Loughboro Road NW, Sibley Memorial HospitalWashington, DC 20016 (202) 660‑6500

Group practices

Medicare enrollment lists Maureen O Donnell as a member of these groups (CMS data updated October 2, 2026).

• Johns Hopkins University2,909 clinicians in the group
• Johns Hopkins University713 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in District of Columbia →

Other general surgeons in Washington

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

• Brian M. Nguyen, MD
• Babak Sarani, MD
• Jamie D. Robinson, MD
• Mena Louis, DO
• Vance Y. Sohn, MD
• Erin A. Felger, MD
• Bryan D. Hubbard, MD
• Ryan Nagele, MD

All general surgeons in Washington →

Other clinicians in Johns Hopkins University

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

• Sandra A. Foster, CNA
• Linda F. Barr, MD
• Brandi L. Galloway, NP
• Paul Scheel Iii, MD
• Nasha N. Elavia, MD
• Sumeska Thavarajah, 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