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

Oscar L Alonso MD SC

Organization Specialist · NPI 1972764538

Oscar L Alonso MD SC is a Specialist in Downers Grove, Illinois. Licensed in Illinois. Registered with an NPI since 2008.

Licensed in
IL
In the registry since
2008

Practice location Address checks out

1034 Warren Ave
Downers Grove, IL 60515-3601
Phone: (630) 960-5310
Fax: (630) 969-7841
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 036064967 (IL)

Record details

NPI number1972764538
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Oscar Alonso — Owner · (630) 960-5310
NPI enumeratedJune 17, 2008
Last updated in NPPESDecember 22, 2020
Certification dateDecember 22, 2020
Mailing address1121 Warren Ave Ste 200, Downers Grove, IL 60515-3572

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