A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
be the first!
Education & Awards
Dr. Johnston graduated from Drexel University , Philadelphia.More Education & Awards
Learn more about Dr. Karen Johnston:
View the full profile to get information on:
- What's important to you
View full profile
Similar doctors nearby
- Additional Information
- Where does Dr. Karen C. Johnston practice?
Dr. Karen Johnston practices Psychiatry near Tucson, AZ.
See Tucson Psychiatrists.
- Similar Physician Names
- Dr. Rayna Johnston, Dr. Reina Johnston, Dr. Tina Johnston, Dr. Trina Johnston