New Search Back to Search Results 9192 Share Profile Ivan Kirov, MD Specialty Pediatric Hematology Oncology Additional Language Spoken English Medical Groups & Affiliations St. Joseph Heritage Medical Group St. Joseph Hospital Affiliated Physicians Phone (714) 633-9111 Address St. Joseph Hospital of Orange 1100 West Stewart Drive Orange, CA 92868 Get Directions Accepting New Patients Primary Office Address St. Joseph Hospital of Orange 1100 West Stewart Drive Orange, CA 92868 Get Directions Phone (714) 633-9111 Secondary Office Address CHOC Children's Specialists - Hematology Oncology 1201 West La Veta Avenue Orange, CA 92868 Phone (714) 509-8636 Fax (714) 509-4748 Hours Mon - Fri: 9 a.m. - 5 p.m. More Information The patient rating score is based on responses and comments from Press Ganey. Responses are measured on a 10 point scale, with 10 being the best score. These scores are then translated to a 5 point scale in order to display results in a 5 Star rating. Comments are also gathered from the same survey and displayed in their entirety with the exception of any language that may be considered libel, or may contain private health information, or is unrelated to the provider being reviewed. Learn more about Press Ganey star rating calculations Meet The Doctor Specialties & Education Primary Specialties Pediatric Hematology Oncology Back to Search Results