Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
Find Dr. Johnston's expertise for a condition
ConditionClose
- Advanced
- PsoriasisDr. Johnston isAdvanced. Learn about Psoriasis.
- Experienced
- Acute PancreatitisDr. Johnston isExperienced. Learn about Acute Pancreatitis.
- ColonoscopyDr. Johnston isExperienced. Learn about Colonoscopy.
- Colorectal PolypsDr. Johnston isExperienced. Learn about Colorectal Polyps.
- EndoscopyDr. Johnston isExperienced. Learn about Endoscopy.
- Familial HypertensionDr. Johnston isExperienced. Learn about Familial Hypertension.
- Familial Hypocalciuric Hypercalcemia Type 1Dr. Johnston isExperienced. Learn about Familial Hypocalciuric Hypercalcemia Type 1.
View All 19 Experienced Conditions
Want to save this doctor for later?
Is this your doctor?
Not sure about your diagnosis?
Are you the provider on this profile?