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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- Advanced
- HIV/AIDSDr. Johnston isAdvanced. Learn about HIV/AIDS.
- Experienced
- ChlamydiaDr. Johnston isExperienced. Learn about Chlamydia.
- GonorrheaDr. Johnston isExperienced. Learn about Gonorrhea.
- Severe Acute Respiratory Syndrome (SARS)Dr. Johnston isExperienced. Learn about Severe Acute Respiratory Syndrome (SARS).
- Stevens-Johnson SyndromeDr. Johnston isExperienced. Learn about Stevens-Johnson Syndrome.
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