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
- Acute Kidney FailureDr. Johnston isExperienced. Learn about Acute Kidney Failure.
- Allergic RhinitisDr. Johnston isExperienced. Learn about Allergic Rhinitis.
- Alopecia AreataDr. Johnston isExperienced. Learn about Alopecia Areata.
- AnemiaDr. Johnston isExperienced. Learn about Anemia.
- ApoplexyDr. Johnston isExperienced. Learn about Apoplexy.
- Arginase DeficiencyDr. Johnston isExperienced. Learn about Arginase Deficiency.
View All 116 Experienced Conditions
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