Andrew N. Umhau, MD

Medicare activity in 2024

Official CMS public-use data for Andrew N. Umhau, 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. Insertion of needle into vein for collection of blood sample (36415)539 services
2. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)468 services
3. Blood test, comprehensive group of blood chemicals (80053)453 services
4. Manual urinalysis test with examination using microscope, automated (81001)353 services
5. Blood test, lipids (cholesterol and triglycerides) (80061)320 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 cholesterol73%
• High blood pressure57%
• Arthritis44%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%
• Ischemic heart disease20%
• Osteoporosis16%

Hospitals where Andrew N. Umhau works

Medicare's Facility Affiliation Data lists Andrew N. Umhau 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
• Suburban HospitalBethesda, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210022

Practice locations

Addresses where Andrew N. Umhau is enrolled with Medicare (CMS data updated October 2, 2026).

• 3301 New Mexico Ave NW, Suite 348Washington, DC 20016 (202) 362‑4467
• 6410 Rockledge Dr, Suite 600Bethesda, MD 20817

Group practices

Medicare enrollment lists Andrew N. Umhau as a member of these groups (CMS data updated October 2, 2026).

• Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
• Foxhall Internists, PC8 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in District of Columbia →

Other internal medicine doctors in Washington

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

• Lonnie Thach, MD
• Kavaljeet Kaur, MD
• Ricardo G. Caldera, MD
• Aileen Chang, MD
• Ines Natividad, MD
• Jillian S. Catalanotti, MD
• Andrew T. Lee, DO
• Farida M. Izzi, MD

All internal medicine doctors in Washington →

Other clinicians in Suburban/Nrh Medical Rehabilitation Inc

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

• Adam B. Lowy, DPM
• Anitha Kandaswamy, MD
• Deborah Kernohan, NP
• Christian H. Lefevre, MD
• Christopher J. Westley, MD
• Mahmoud Doski, 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