Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. A Karim Sleiman, MD

Individual provider Internal Medicine Physician · NPI 1457888604

Dr. A Karim Sleiman, MD is an Internal Medicine Physician in Boston, Massachusetts. Practices as a sole proprietor and works from 2 locations. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2017
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

800 Washington St # 450
Boston, MA 02111-1552
Phone: (617) 636-4600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 50 Staniford St Fl 6, Boston, MA 02114-2517 — (617) 367-4800

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 1014555 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 1014555 (MA)

Record details

NPI number1457888604
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 18, 2017
Last updated in NPPESAugust 6, 2023
Certification dateAugust 6, 2023

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 patients46
Services billed 87 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

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