Oliver O. Tannous, MD

Medicare activity in 2024

Official CMS public-use data for Oliver O. Tannous, 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)177 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)162 services
3. Fusion of additional segment of spine (22614)74 services
4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)61 services
5. Telephone medical discussion with physician, 11-20 minutes (99442)57 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%
• Arthritis75%
• Diabetes47%
• Ischemic heart disease32%
• Chronic kidney disease29%

Hospitals where Oliver O. Tannous works

Medicare's Facility Affiliation Data lists Oliver O. Tannous 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.

• MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 090011

Practice locations

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

• 3800 Reservoir Rd NWWashington, DC 20007 (202) 444‑2000
• 6410 Rockledge DrBethesda, MD 20817
• 6410 Rockledge Dr, Suite 600Bethesda, MD 20817

Group practices

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

• MedStar Medical Group II LLC3,767 clinicians in the group
• Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in District of Columbia →

Other orthopedic surgeons in Washington

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

• Keyur S. Desai, MD
• Branum G. Griswold, MD
• Teresa Doerre, MD
• Joseph L. Ferguson, MD
• Min Lu, MD
• Marc D. Chodos, MD
• Andrew Jones, MD
• Carmen Pichard Encina, MD

All orthopedic surgeons in Washington →

Other clinicians in MedStar Medical Group II LLC

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

• Gaurav Manek, MD
• Kritis Dasgupta, MD
• Ivanesa L. Pardo Lameda, MD
• Patrick North, PA
• Estelle Jean, MD
• Ernest Fischer, 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