Kruger, Jonathan R., MD. Location: Fayetteville Diagnostic Clinic, A MANA Clinlc Make an Appointment: (479) 582-7330 or login to myMANA to request online. Fayetteville Diagnostic Clinic welcomed Dr. Jonathan Kruger, Rheumatologist, to the care team on April 26, 2021. Dr. Kruger is a board-certified rheumatologist who is committed to providing ....