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  • Gastroenterology, Internal Medicine
  • 10 years of experience
  • Mary Greeley Medical Center 1111 Duff Ave, Ames, IA 50010
  • (515) 239-2011

Brief Intro

Dr. Johnston graduated from the Oklahoma State Univ Center For Health Sciences College of Osteopathic Med in 2015. He works in Ames, IA and 1 other location and specializes in Internal Medicine and Gastroenterology.

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Education Background

MEDICAL SCHOOL

Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med - 2015

Location & Hours

  • Mcfarland Clinic PC
  • 1111 Duff Ave, Ames, IA 50010

Specialties Treated

  • Internal Medicine
  • Gastroenterology

Insurance Accepted

* Insurance information may change frequently. Please verify directly with the provider (doctor/clinic).

  • HealthScope Benefits
  • Assurant Health
  • Sanford Health Plan
  • UPMC Health Plan
  • Golden Rule
  • AmeriGroup
  • CHAMPVA
  • UnitedHealthcare
  • HealthSmart
  • Cigna
  • Medica
  • Wellmark Blue Cross and Blue Shield
  • Meritain Health
  • Aetna
  • Medical Associates Health Plans
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  • Cancer 6
  • Cardiology, Heart & Vascular Surgery 8
  • Orthopedics 17
  • Neurology & Neurosurgery 13
  • Gastroenterology & GI Surgery 15
  • Pulmonology & Lung Surgery 15
  • Diabetes & Endocrinology 4
  • Children's Hospital 2
  • Urology 13
  • Psychiatry 15
  • Geriatrics 15
  • Rehabilitation 16
  • Obsterics & Gynecology 2
  • Ophthalmology 1
  • Ear, Nose & Throat 1
  • Rheumatology 1
  • Long Term Care 2
  • Maternity Care (Uncomplicated Pregnancy) 8