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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- Distinguished
- Premenstrual Dysphoric DisorderDr. Johnston isDistinguished. Learn about Premenstrual Dysphoric Disorder.
- Advanced
- Acute Cerebellar AtaxiaDr. Johnston isAdvanced. Learn about Acute Cerebellar Ataxia.
- Breast CancerDr. Johnston isAdvanced. Learn about Breast Cancer.
- Cataract Ataxia DeafnessDr. Johnston isAdvanced. Learn about Cataract Ataxia Deafness.
- Hereditary AtaxiaDr. Johnston isAdvanced. Learn about Hereditary Ataxia.
- Spinocerebellar Ataxia Type 10Dr. Johnston isAdvanced. Learn about Spinocerebellar Ataxia Type 10.
- Spinocerebellar Ataxia Type 12Dr. Johnston isAdvanced. Learn about Spinocerebellar Ataxia Type 12.
View All 16 Advanced Conditions
- Experienced
- Avian InfluenzaDr. Johnston isExperienced. Learn about Avian Influenza.
- Boucher-Neuhauser SyndromeDr. Johnston isExperienced. Learn about Boucher-Neuhauser Syndrome.
- BronchitisDr. Johnston isExperienced. Learn about Bronchitis.
- BullaeDr. Johnston isExperienced. Learn about Bullae.
- CardiomyopathyDr. Johnston isExperienced. Learn about Cardiomyopathy.
- Cervical MyelopathyDr. Johnston isExperienced. Learn about Cervical Myelopathy.
View All 50 Experienced Conditions
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