30 min follow ups & lab reviews, post case review: Dr. Campbell. Nutritional follow ups: Cristina, NTP. Below is our appointment fee schedule: Dr. Hohn CRISTINA, NPT or DANA, CNS. 30-MIN PHONE FOLLOW-UP $250 30-45MIN PHONE FOLLOW-UP $190. 30-MIN LAB REVIEW (PER TEST) $250. Dr. Campbell..