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

Individual provider Psychiatry Physician · NPI 1891900197

Dr. Thomas William Allen, MD is a Psychiatry Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
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

446 E Ontario St 6-200
Chicago, IL 60611-4418
Phone: (312) 926-8638
Fax: (312) 926-7960
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Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X (IL)

Record details

NPI number1891900197
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 11, 2007
Last updated in NPPESJuly 8, 2007
Mailing address431 W Oakdale Ave Apt 8c, Chicago, IL 60657-5956

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