Mark Johnson, MD
Endocrinology
MercyOne North Iowa Diabetes, Endocrinology and Weight Loss
910 N Eisenhower Ave.
Mason City, IA 50401 Directions
4.9 out of 5
60 verified ratings
60 Ratings, 8 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Jul 29, 2025
I have been seeing him for a number of years and as I said I value his experience in treating patients.
Jul 23, 2025
I highly recommend Dr. Johnson and his staff!
Jul 22, 2025
He always schedules my appointments later in the afternoon the way I like them
Jul 21, 2025
Doctor Johnson is excellent
Jul 14, 2025
You need more like him. His schedule is full. Due to Medicare regulations it it difficult to schedule with him and other medical providers.
Jul 14, 2025
As stated before, Dr. Johnson takes care of my needs. Always positive!
Jul 14, 2025
He he kind, courteous, & helpful with helping me with my diabetes
Jun 13, 2025
He's the most dedicated physician representing Mercy Health.