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

Dr. Hussam Mohamed Ammar, MD

Individual provider Hospitalist Physician · NPI 1780712273

Dr. Hussam Mohamed Ammar, MD practises Internal Medicine in Washington, District of Columbia. Qualified in 1993, 33 years ago. Practices with Tallahassee Memorial Healthcare Inc, a 497-clinician group and accepts Medicare assignment. Licensed in District of Columbia and Texas.

Years since qualifying
33
Licensed in
DC, TX
In the registry since
2007
Specialties on file
3
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

110 Irving St NW Medstar Washington Hospital Ctr Ste 1A50-A
Washington, DC 20010-3017
Phone: (202) 877-0028
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence N8268 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD044745 (DC)
Hospitalist Physician Taxonomy 208M00000X · Licence MD044745 (DC)

Record details

NPI number1780712273
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESMarch 3, 2017

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Tallahassee Memorial Healthcare Inc — 497 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients101
Services billed 270 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Colleagues at Tallahassee Memorial Healthcare Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 497 clinicians in the practice; 12 are shown here.

Other providers in Washington