Consistency is key to having the site look professional. Please use the same lighting and backgrounds in all photos to insure a strong suite of shots.
Portraits should be crisp and clear with a short depth of field so that backgrounds are out of focus and less noticeable. Please keep the background light in tone.
When shooting portraits please get a couple of variants: one with lab coat, one without, one seated, one standing. This will give more options to find a consistent photo set where everyone looks good.
Body position should be relaxed and welcoming. eg – Arms should be relaxed and natural, crossed arms are okay when relaxed but when tightly crossed they can seem unfriendly.
Don’t lean into or out from the camera too far. Leaning in can feel intense, leaning out is too casual. Try to keep upright but natural posture.
It just looks stock to have a stethoscope in the doctor’s photo. Also, just too formal to appear approachable and natural.
Leave space around the person, overly tight images are intense, uncomfortable to view in series and difficult to work with.