Photo of Dr. Frank Castillo

Dr. Frank Castillo, MD

Concierge Family Medicine physician, Chicago, IL

One Medical
5.0 (10 reviews)

Dr. Frank Castillo is a family medicine physician at One Medical who focuses on preventive healthcare and chronic conditions such as diabetes and hypertension.

181 West Madison Street, Suite 3825, Chicago, IL 60602

Facts on this page last checked October 2026. How we check doctors

About Dr. Castillo

Dr. Castillo received his medical school education at the University of Wisconsin Medical School and completed residency at the University of Wisconsin School of Medicine. He is a Fellow of the American Academy of Family Physicians. He focuses on preventive healthcare, managing chronic conditions such as diabetes and hypertension, and recognizing the significance of mental and spiritual wellness.

He enjoys collaborating with patients on their health concerns and aspirations and guiding them to make informed decisions. He enjoys exploring the city on his bike.

Membership and fees

One Medical is a membership-based primary care practice designed around its patients.

Services

Preventive healthcare Diabetes management Hypertension management Mental and spiritual wellness
What family medicine doctors commonly treat

Education and credentials

Degree
MD
Medical school
University of Wisconsin Medical School
Residency
University of Wisconsin School of Medicine
Professional memberships
Fellow, American Academy of Family Physicians (FAAFP)
NPI
1548280787

Location

181 West Madison Street, Suite 3825, Chicago, IL 60602
One Medical practice page
Directions

Patient reviews

5.0
10 reviews
5 star10
4 star0
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Write a review
Rated 5 out of 5

professional, kind and thoroughly knowledgeable

"I trust him with the life of my children and myself without question. Dr Frank is professional, kind and thoroughly knowledgeable."

FMDD UserMar 2023
Rated 5 out of 5

Awesome!

"Awesome and inclusive. I'm a healthier man because of him!"

FMDD UserDec 2022

Questions patients ask

Does Dr. Castillo take insurance, or offer a membership?

One Medical is a membership-based primary care practice that also works with insurance.

Where did Dr. Castillo train?

Dr. Castillo received his medical school education at the University of Wisconsin Medical School. He completed residency at the University of Wisconsin School of Medicine.

Does Dr. Castillo treat chronic conditions?

Dr. Castillo focuses on managing chronic conditions such as diabetes and hypertension.

Does One Medical offer video visits?

One Medical offers on-demand video calls and video visits.

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