Joshua S. Yamamoto, MD

Medicare activity in 2024

Official CMS public-use data for Joshua S. Yamamoto, 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)1,629 services
2. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)831 services
3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)803 services
4. Ultrasound of both sides of head and neck blood flow (93880)519 services
5. Programming of dual lead pacemaker system (93280)295 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%
• High blood pressure72%
• Arthritis45%
• Atrial fibrillation37%
• Osteoporosis35%
• Diabetes27%

Hospitals where Joshua S. Yamamoto works

Medicare's Facility Affiliation Data lists Joshua S. Yamamoto 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 Joshua S. Yamamoto is enrolled with Medicare (CMS data updated October 2, 2026).

• 3301 New Mexico Nwave, Suite 202Washington, DC 20016 (202) 243‑0271

Group practices

Medicare enrollment lists Joshua S. Yamamoto as a member of this group (CMS data updated October 2, 2026).

• Foxhall Medicine PLLC2 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary

Find other Cardiovascular Disease (Cardiology) doctors in District of Columbia →

Other cardiologists in Washington

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

• Jonathan Patrick, MD
• Ida Suen, MD
• Richard Weinstein, MD
• Allen Taylor, MD
• Richard Rubin, MD
• Sumbal Janjua, MD
• Oluseyi Princewill, MD
• Martin J. McNamara, MD

All cardiologists in Washington →

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