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 Mr. Johnston's expertise for a condition
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- Advanced
- CryptococcosisMr. Johnston isAdvanced. Learn about Cryptococcosis.
- MeningitisMr. Johnston isAdvanced. Learn about Meningitis.
- Experienced
- Cryptococcal MeningitisMr. Johnston isExperienced. Learn about Cryptococcal Meningitis.
- HIV/AIDSMr. Johnston isExperienced. Learn about HIV/AIDS.
- RosaceaMr. Johnston isExperienced. Learn about Rosacea.
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