Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Andrew N Umhau, MD

Individual provider Internal Medicine Physician · NPI 1336161645

Dr. Andrew N Umhau, MD practises Internal Medicine in Washington, District of Columbia. Graduated from Duke University School of Medicine in 1985, 41 years ago. Practices with Foxhall Internists, PC, a 7-clinician group. Licensed in District of Columbia.

Years since qualifying
41
Trained at
Duke University School of Medicine
Licensed in
DC
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3301 New Mexico Ave NW Ste 348
Washington, DC 20016-3622 Not confirmed with CMS for 19 years — call before visiting
Phone: (202) 362-4467
Fax: (202) 362-2303
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD17790 (DC)

Record details

NPI number1336161645
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolDUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Foxhall Internists,Pc — 7 clinicians
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients388
Services billed 5,265 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Sibley Memorial Hospital Hospital · Washington, DC
  • Suburban Hospital Hospital · Bethesda, MD
  • Amedisys Home Health Home health agency · Washington, DC
  • Potomac Home Health Care Home health agency · Bethesda, MD

Colleagues at Foxhall Internists, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Washington