Dr. Dirk T. Rainwater, MD is a Everyday Health-CARE doctor whose speciality is Internist and is located in Bossier City, Louisiana. ... Internist. 21 Years of Experience. 5. Read 2 reviews. Call (318) 742-6900. Accepting patients. About Reviews Other Specialists (318) 742-6900. About Dr. Dirk T. Rainwater, MD. ... Dr. Rainwater is experienced ....