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
ConditionClose
- Advanced
- Ogilvie SyndromeDr. Johnston isAdvanced. Learn about Ogilvie Syndrome.
- Experienced
- CellulitisDr. Johnston isExperienced. Learn about Cellulitis.
- CholecystitisDr. Johnston isExperienced. Learn about Cholecystitis.
- CholedocholithiasisDr. Johnston isExperienced. Learn about Choledocholithiasis.
- Femoral HerniaDr. Johnston isExperienced. Learn about Femoral Hernia.
- Gallbladder DiseaseDr. Johnston isExperienced. Learn about Gallbladder Disease.
- GallstonesDr. Johnston isExperienced. Learn about Gallstones.
View All 15 Experienced Conditions
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