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

Ghassan Ilaiwy, MD

Individual provider Internal Medicine Physician · NPI 1588059752

Ghassan Ilaiwy, MD practises Internal Medicine in Washington, District of Columbia. Qualified in 2013, 13 years ago. Practices with Mary Washington Healthcare Providers LLC, a 261-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
13
Licensed in
VA
In the registry since
2015
Specialties on file
2
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 Dept OF Internal Medicine
Washington, DC 20010
Phone: (202) 877-2835
Fax: (202) 877-8288
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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 0101263994 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101263994 (VA)

Record details

NPI number1588059752
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 3, 2015
Last updated in NPPESJanuary 31, 2024
Certification dateJanuary 31, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mary Washington Healthcare Providers Llc — 261 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 patients127
Services billed 129 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

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 Mary Washington Healthcare Providers LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 261 clinicians in the practice; 12 are shown here.

Other providers in Washington