Mark Johnson, MD
Endocrinology, Diabetes and Metabolism, Virtual Visits
Primary Contact
641-428-7799
Appointments (New Patients Welcome)
Primary Contact
641-428-7799About
I chose a career in medicine due to encounters with physicians when I was very young. At 10 or 12 years old, I considered himself a young scientist and would ask many what and why questions when I was in the presence of physicians. Even then I felt a sense of collegiality. As I got older, it was the detective work that is a part of medicine, always learning more and looking for clues, that fascinated me. When I completed medical school and residency, it was with great delight that I discovered that science, collegiality and looking for clues indeed was rewarding.
Throughout my medical career, it is the relationships that I have with my patients that makes me look forward to starting each work day some 44 years after getting my medical diploma.
In the News
Services & Specialties
Areas of Specialization
- Endocrinology, Diabetes and Metabolism
- Virtual Visits
Conditions Treated
- Diabetes
Locations & Contact
Primary Location
MercyOne North Iowa Diabetes, Endocrinology and Weight Loss
910 N Eisenhower Ave.
Mason City, IA 50401
Insurances Accepted
- Aetna
- Aetna Medicare Advantage
- Amerigroup
- Centivo
- Humana
- IA Total Care
- Logistics Health Incorporated (LHI)
- Medical Associates HP
- MediGold
- Midlands Choice
- Multiplan
- Oscar
- Preferred Health Choice
- Tricare
- UBH
- United Health Care
- United Health Care Medicare Advantage
- VACCN
- Wellmark
- Wellmark Medicare Advantage
Education & Certifications
Education
Residency:
University of Nebraska Medical Center
Medical School:
University of Iowa College of Medicine
Board Certifications
Internal Medicine, Endocrinology, American Board of Internal Medicine
