Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Donald Benjamin Lassus, MD

Individual provider Family Medicine Physician · NPI 1124330055

Dr. Donald Benjamin Lassus, MD is a Family Medicine Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2010.

Licensed in
IL
In the registry since
2010
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

4747 N Kedzie Ave
Chicago, IL 60625
Phone: (312) 666-3494
Fax: (773) 267-2175
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036135721 (IL)

Record details

NPI number1124330055
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2010
Last updated in NPPESAugust 10, 2021
Certification dateAugust 10, 2021

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 patients32
Services billed 89 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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