For more than 28 years, Dr. Hollen and his team have served Oklahoma City and metropolitan area with distinction. Prior to receiving his board certification in Medical Oncology/ Hematology, he also received board certification in Internal Medicine and Pharmacology. Dr. Hollen has published oncology articles and is widely known in the community he serves for his compassion of helping others. Dr. Hollen is a member of Integris Health Pathways (IHP).
- University of Oklahoma College of Medicine, MD, Oklahoma City, OK
- Oklahoma University Health Science Center, Oklahoma City, OK
- Oklahoma University Health Science Center, Internal Medicine, Oklahoma City, OK
- Oklahoma University Health Science Center, Medical Oncology, Oklahoma City, OK
- CMS Stage 1 HER (2012)
- CMS Stage 1 HER (2013)
- Checkbook Top Doc