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

Individual provider Adult Medicine Physician · NPI 1255462578

Dr. Roberto Diaz, MD is an Adult Medicine 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

1805 S Ashland Ave
Chicago, IL 60608-2805
Phone: (312) 421-7010
Fax: (312) 421-8056
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Medicine Physician (primary) Taxonomy 207QA0505X (IL)

Record details

NPI number1255462578
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 8, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1805 S Ashland Ave, Chicago, IL 60608-2805

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