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

Josiah To, MD, MASC

Individual provider Ophthalmology Physician · NPI 1306575576

Josiah To, MD, MASC is an Ophthalmology in Chicago, Illinois. Graduated from R Franklin University of Med & SCI/Chicago Medical School in 2020, 6 years ago. Practices with Cook County, a 787-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
6
Trained at
R Franklin University of Med & SCI/Chicago Medical School
Licensed in
IL
In the registry since
2022
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

1950 W Polk St # 5L175-1
Chicago, IL 60612-3723
Phone: (312) 864-0395
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 125.079982 (IL)

Record details

NPI number1306575576
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MASC
Sole proprietorYes
NPI enumeratedJune 6, 2022
Last updated in NPPESJune 6, 2022
Certification dateJune 5, 2022

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolR FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Graduated 2020 (6 years in practice)
Group practice Cook County — 787 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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