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

Dr. Douglas John Frohlich I, DO

Individual provider Family Medicine Physician · NPI 1699960690

Dr. Douglas John Frohlich I, DO is a Family Medicine Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1229 N North Branch St Ste 210
Chicago, IL 60622-2473
Phone: (312) 939-5090
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Family Medicine) Physician (primary) Taxonomy 207QG0300X · Licence 036-074096 (IL)
Family Medicine Physician Taxonomy 207Q00000X · Licence 036074096 (IL)

Record details

NPI number1699960690
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 12, 2007
Last updated in NPPESNovember 17, 2008

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