About our Physicians
Dr. Christian
Beythien, MD, is staff cardiologist and internal
specialist at the XCell-Center. He has completed his medical
studies in his home town Hamburg and became specialist in internal
medicine with the additional denotation "special internal intensive
medicine" during his occupation at the university hospital
Eppendorf/Hamburg. In the course of his medical career Dr. Beythien
put his professional focus on interventional cardiology - including
PTCA and stent implantation - and angiology, as well as internal
intensive care.
In his latest function, Dr. Beythien was chief of the Medizinische Klinik I at the Evangelische Hospital Holzminden. He habilitated in the year 2004 with the thesis "Effect of design and surface coating of coronary stents on the activation of thrombocytes and plasmatic coagulation: Quantification in the in vitro modell" at the Medical faculty of the university of Rostock, Germany. In the course of his scientific work Dr. Beythien is an active expert reviewer for a number of medical journals such as "Deutsche Medizinische Wochenzeitschrift", "Thrombosis and Haemostasis" and "Journal of Endovascular Therapy". Furthermore he holds lectures and seminars within student education programs and advanced medical training of colleagues.
Dr. Dirk Happich,
MD, is a Transfusion and Laboratory Medicine Physician at
the XCell-Center. Additionally, Dr. Happich has operated a joint
laboratory-medicine practice in Leverkusen and Cologne for many
years. He previously worked at the University of Bonn's Institute
for Experimental Hematology and Transfusion Medicine and at the
Institute for Laboratory and Transfusion Medicine at Ruhr
University Bochum's NRW Heart and Diabetes Centre.
Prof. Nils
Haberland is a neurosurgeon and an XCell-Center consultant
physician. Until the end of September 2007, Prof. Dr. Nils
Haberland was Chief Physician of the Neurosurgery and
Neurotraumatology Department at the Berufsgenossenschaftliche
Unfallsklinik in Frankfurt am Main. Since October 2007, he has
assumed an internationally recognized position as the Chairman of
the International Spine Center Cairo (ISCC) at the Egypt Air
Hospital in Cairo.
Dr. Michael John, MD,
is staff orthopedist at the XCell-Center. He was resident at the
Behandlungszentrum Vogtareuth with focus on endoprothetics and
spine surgery and at the Childrens Hospital in Aschau with focus on
pediatric orthopaedics. After completing his residency Dr. John
worked for over 10 years as assistant medical director at the Alpha
Klinik in Munich with focus on minimal invasive spine surgery. His
interest in adult stem cells was sparked by his dissertation about
a new, endoscopic method for degenerative disc disease. The outcome
showed that adult stem cells out of vertebral bone marrow were able
to build new, functional nucleus and relieve the painful symptoms.
(Source: M. John, T. Hoogland et al: "Die perkutane transforaminale
endoskopische Diskusabrasion: Eine neue interventionelle Therapie
zur regeneration schmerzhaft degenerativer lumbaler Bandscheiben,
2007").
Dr. Aladin Elsisi, MD, is
chief of anesthetics and assistant medical director at the
XCell-Center. He completed his medical studies at the medical
faculty of the university of Cairo/Egypt where he earned the
academic degree "Mediciane Baccalareus" with the final grade "very
good". He was resident physician at the university clinic in Cairo
and medical officer at the military hospital in Cairo in the
pediatric department. Dr. Elsisi holds the German medical license
and is medical specialist in anesthetics. After his function as
visiting physician at the university hospital in Heidelberg/Germany
under the supervision of Prof. K. van Ackern, Dr. Elsisi engaged as
anesthetic specialist at the clinic Markröningen/Germany with the
focus on spinal injuries and SCI. Until his transition to the
XCell-Center Dr. Elsisi was head of the surgical ambulance at the
Eduardus hospital in Cologne. He has gained experience in the realm
of stem cell therapy since 2007.
Dr. Uta Kristein Tamaschke, MD, is
staff neurosurgeon at the XCell-Center. She has engaged in the
field of pediatric neurosurgery for the past 20 years, focusing her
work in particular on congenital and acquired development
disorders of the central nervous system (CNS). Based on newest
neurophysiological findings Dr. Tamaschke has, for the past 10
years, further refined the minimal invasive neuroendoscopic
technique. She has since surgically treated 500 affected children
with advanced endoscopic intruments. In addition Dr. Tamaschke has
been employing her expertise in the field of neurosurgery in
cooperations with humanitarian aid organizations worldwide since
2001.
Dr. Stefan Ernst, MD, is staff Interventional Radiologist at the XCell-Center. After completing a diagnostic radiology residency program, he has held positions as Assistant Medical Director at Siegburg Hospital's Central Institute for Radiology and at the Institute for Diagnostic Radiology at the Heinrich-Heine University in Düsseldorf. Dr. Ernst was the Department Head for Diagnostic and Interventional Radiology at the Marien-Krankenhaus Bergisch Gladbach hospital, where he is still practicing as a resident radiologist.
Dr. Paul Kraus, MD, is radiologist at the XCell-Center. He completed his medical studies at the university of Freiburg/Breisgau and then became a specialist in radiology at the Erlangen/Nürnberg University hospital. For twenty-one years, he ran a leading imaging center for radiological diagnostics in Amberg, Northern Bavaria. Since 1995, Dr. Kraus has chaired several radiological quality assurance committees in Bavaria. In 2002, he spearheaded mammography screening in Northern Bavaria, and continues to serve as an expert consultant throughout the region.
