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

Dr. Dennis A. Long, MD

Individual provider Psychiatry Physician · NPI 1154454692

Dr. Dennis A. Long, MD is a Psychiatry Physician in Saint Charles, 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

2210 Dean St Ste O-1
Saint Charles, IL 60175-1066
Phone: (630) 377-7660
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 3642582 (IL)

Record details

NPI number1154454692
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 13, 2007
Last updated in NPPESNovember 19, 2007
Mailing address2210 Dean St, Suite O-1, Saint Charles, IL 60175-1066

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