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

Carolyn Maria Castillo O'Neill, DO

Individual provider Emergency Medicine Physician · NPI 1972252484

Carolyn Maria Castillo O'Neill, DO is an Emergency Medicine in Chicago, Illinois. Graduated from Marian University College of Osteopathic Medicine in 2022, 4 years ago. Practices with Cepamerica Illinois LLP, a 493-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
4
Trained at
Marian University College of Osteopathic Medicine
Licensed in
IL
In the registry since
2022
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

7435 W Talcott Ave
Chicago, IL 60631-3707
Phone: (773) 990-7921
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036171846 (IL)

Record details

NPI number1972252484
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 22, 2022
Last updated in NPPESOctober 9, 2024
Certification dateOctober 9, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMARIAN UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2022 (4 years in practice)
Group practice Cepamerica Illinois Llp — 493 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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