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

Individual provider Anesthesiology Physician · NPI 1477651750

Dr. Leroy Stewart Thomson III, MD is an Anesthesiology in Barrington, Illinois. Qualified in 2002, 24 years ago. Practices with Barrington Anesthesia Associates, SC, a 20-clinician group and accepts Medicare assignment. Licensed in Arizona and Illinois.

Years since qualifying
24
Licensed in
AZ, IL
In the registry since
2006
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

450 W Il Route 22
Barrington, IL 60010-1919
Phone: (224) 465-3288
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 036.119201 (IL)
Anesthesiology Physician Taxonomy 207L00000X · Licence 35844 (AZ)

Record details

NPI number1477651750
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 20, 2006
Last updated in NPPESDecember 20, 2021
Certification dateDecember 20, 2021

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Barrington Anesthesia Associates, Sc — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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