IgG4 Related Disease (IgG4 RD) Doctors Worldwide

Dr. Maha Yahia is a medical and hemato-oncologist at Shefaa Al Orman International Oncology Hospitals. She served as a Lieutenant Colonel physician in the Egyptian Armed Forces Medical Corps. Dr. Yahia specializes in treatment planning for breast, thoracic, and gastrointestinal cancers. She focuses on immunotherapy, targeted therapy, and complex chemotherapy protocols.

• Former Head of the Clinical Research Support Team at Maadi AFMC.
• Trained at the National Cancer Institute, Cairo University, in hemato-oncology.
• Treats genitourinary, gynecologic, and rare cancers alongside hematologic conditions.
• Works at an ESMO-accredited center that treats 6,000 patients annually.

Head of Teaching at Puerto Vallarta Regional Hospital – Dr. Perez brings academic leadership to patient care.

• 12 years as a general practitioner in private practice
• Specialized training in biomagnetism from Isaac Goiz Duran
• Experience with advanced dermatological procedures and therapies

Dr. Marta Cruz Aparicio is a gastroenterologist at Publio Cordón Memorial Hospital in Madrid. She treats stomach, colon, and pancreatic cancers, along with chronic conditions like Hepatitis B and IgG4-related disease. Her surgical work includes the removal of duodenal polyps. Dr. Aparicio practices at a JCI-accredited facility, a certification for patient safety and clinical quality.