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

Individual provider Internal Medicine Physician · NPI 1407944309

Dr. Leonard Stallings, MD is an Internal Medicine Physician in Chicago, Illinois. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
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

6434 W North Ave
Chicago, IL 60707-4030
Phone: (773) 836-3000
Fax: (773) 836-5980
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5120 W Jackson Blvd, Chicago, IL 60644-4332 — (773) 265-4566

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036071417 (IL)

Record details

NPI number1407944309
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 10, 2006
Last updated in NPPESNovember 29, 2022
Certification dateNovember 29, 2022

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 patients88
Services billed 887 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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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