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
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- Experienced
- AIDS Dementia ComplexDr. Johnston isExperienced. Learn about AIDS Dementia Complex.
- AIDS Dysmorphic SyndromeDr. Johnston isExperienced. Learn about AIDS Dysmorphic Syndrome.
- Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease)
- Familial HypertensionDr. Johnston isExperienced. Learn about Familial Hypertension.
- Glucocorticoid-Remediable AldosteronismDr. Johnston isExperienced. Learn about Glucocorticoid-Remediable Aldosteronism.
- HIV/AIDSDr. Johnston isExperienced. Learn about HIV/AIDS.
View All 11 Experienced Conditions
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