Dr. Bellak is board certified in pediatric and adult allergy and immunology as well as internal medicine. He knows what allergy sufferers face having eczema, allergies and asthma himself.   He is passionate about teaching his patients how to live with allergies and asthma without limitations.

Dr. Bellak is a native of Las Vegas, Nevada. He graduated with honors from UCLA before returning to Nevada for medical school.  After medical school, Dr. Bellak completed his internship and residency in internal medicine at the Mayo Clinic in Arizona.  He moved to Wisconsin to complete allergy, asthma and immunology training at one of the best training programs in the country at the University of Wisconsin (UW).  While at UW, Dr. Bellak trained under Dr. William Busse, chair of the National Heart, Lung, and Blood Institute expert panel on asthma diagnosis and management, and Dr. Robert Lemanske, immediate-past president of the American Academy of Allergy, Asthma and Immunology (AAAAI).  During his education and training, Dr. Bellak participated in multiple laboratory and clinical research studies.  Dr. Bellak is a fellow of the American College of Physicians, and a member of the AAAAI and American College of Allergy, Asthma and Immunology.

Prior to moving to Oklahoma, Dr. Bellak had a State of Wisconsin grant to provide primary care and specialty allergy and immunology care to an underserved community in rural Wisconsin. During his tenure there, Dr. Bellak served as medical director of the family clinic and chief of staff while being active in the community providing free asthma and allergy screenings and serving on a community task force to limit prescription drug abuse.

Dr. Bellak, his wife, Jennifer, and his three children, Isabelle, Hunter and Tyson, look forward to establishing strong roots in Oklahoma. They enjoy spending time as a family outdoors and being active.