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Biography

Professor Johann Okenega - Head Physician, Department of Gastroenterology, Bremen-Mitte Clinic.

Other doctors in the direction

Bartolomé Oliver

Bartolomé Oliver

Experience (years)

Specialization: Neurosurgery, Oncology, Spinal surgery

Bartolome Oliver is a top-rated neurologist from Spain. Heads the Neurosurgical Department at the Teknon Clinic. Dr. Bartolome has been practicing since 1979. Dr. Oliver performs microsurgical operations through small incisions under a microscope. The physician also utilizes apparatuses of non-invasive radiosurgery. Dr. Bartolome Oliver performs more than 200 operations annually.

Dr. Oliver received an education at the University of Barcelona. He completed residency training in the National Neurosurgical Service. The doctor was trained in hospitals in Stockholm (Sweden), Zurich (Switzerland), Montreal (Canada), St. Louis (the USA), and Pittsburgh (the USA). Dr. Oliver worked in the largest Spanish hospitals - São Paulo, Olivera Ayat, Teknon.

Dr. Kelvin

Dr. Kelvin

Experience (years)

Specialization: Oncology, Orthopedics

The Good doctor of decades. 

Dr. Hollywood

Dr. Hollywood

Experience (years)

Specialization: Oncology, Orthopedics, Psychology

Specializes in orthopedics, Graduated from Edinburgh's Royal College of Surgeons in 1976

M.D. Serdar Turhal

M.D. Serdar Turhal

Experience (years)

Specialization: Oncology

  • Prof. of Internal Medicine & Medical Oncology
  • Has studied or worked at University of Istanbul, Cerrahpaşa Medical School; Griffin Hospital, Yale University, USA; Mount Sinai School of Medicine Hospital, USA; and University of Marmara, School of Medicine.
  • Is certified by the American Board of Internal Medicine ABIM (2007-2017)
  • Has published 80 research articles


Carlos Ballesta Lopez

Carlos Ballesta Lopez

Experience (years)

Specialization: Bariatric surgery, Colorectal medicine, Oncology, Endocrinology

Dr. Carlos Ballesta López is a Head Of Laparoscopic Surgery Center. His specialty: General and Digestive Surgery With more than 30 years of experience in general and digestive surgery, Dr. Ballesta is a pioneer in laparoscopic surgery (minimally invasive).