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Klaus Kaczirek
25
years of experience

Klaus Kaczirek

  • Specialization: General surgeon
  • 25 years of experience
  • accreditation:
  • Speaks:
    German, English
  • Workplace: Austria, Vienna, Wiener Privatklinik (WPK)
  • Deputy Head of the Department of General Surgery at Vienna General Hospital (AKH)

    Dr. Klaus Kaczirek is an endocrine and oncologic surgeon at Wiener Privatklinik in Vienna. He served as the Deputy Head of General Surgery at Vienna General Hospital. Dr. Kaczirek specializes in complex thyroid and neuroendocrine tumor surgery. He performs operations at a Newsweek-ranked hospital.

    • Member of the European Society of Endocrine Surgeons.
    • Treats hormone-producing cancers, liver cancer, and pancreatic tumors.
    • Performs specialized procedures like liver resection and distal pancreatectomy.
    • Served as Professor of Surgery at the Medical University of Vienna.
4.6
Excellent score
20 patient verified reviews
1 star
5%
2 stars
5%
3 stars
15%
4 stars
15%
5 stars
60%

Patient reviews

About clinic Wiener Privatklinik (WPK)
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1-5 of 20 reviews
Аleksandr • Dialysis
Ukraine
Jun 23, 2026
Verified review.
The support from the clinic since I started treatment has been brilliant
What worried me most was what haemodialysis would actually be like and how I would feel. But my doctor was honest about what to expect and explained the whole process very clearly, including the diet and fluid restrictions. As it turns out, I feel better than I expected. I’ve been prescribed three sessions a week, and the support from the clinic since I started treatment has been brilliant. They’re always available, they’ve checked in on how I’m feeling and given me clear instructions. Importantly, there were no additional costs. My advice to future patients would be to prioritise their health above all else.
Everything's fine.
Anonymous • Surgery
Ukraine
Jul 5, 2026
Verified review.
Thank you to your organisation and to you personally, as well as to Angelica from the host organisation, for your help!
I suppose I’d give it a 4.8, really. But that wasn’t down to you. The doctor saw me an hour and a half after the scheduled time. However, the consultation was very informative. Thank you to your organisation and to you personally, as well as to Angelica from the host organisation, for your help!
Anonymous • CT scan of the whole body
Jun 2, 2026
Verified review.
Given how positive my experience was, I would definitely recommend this clinic to anyone needing similar care
My biggest concern was the anxiety around getting a full-body CT scan, but that worry disappeared quickly. From the moment I walked in, the staff made me feel comfortable and explained every single step, which was incredibly reassuring. The clinic was clean and organized, and the medical team was both professional and genuinely kind throughout the entire process. Everything went smoothly. Given how positive my experience was, I would definitely recommend this clinic to anyone needing similar care. I'm grateful for how they handled my case with such efficiency and compassion.
Nothing
Tetyana • Metastases in the liver
Ukraine
Apr 19, 2026
Verified review.
The coordination was truly outstanding
I was most concerned about the communication between my oncologists and the administrators. This aspect turned out to be impeccable. The coordination was truly outstanding. I arrived when the stage had already been determined, which simplified the process. However, to fully understand the treatment method, I had to ask clarifying questions, and only one therapy option was recommended. It's still too early to talk about changes in symptoms, as I am in the early stages of recovery. My main advice for people in similar situations seeking treatment abroad is to definitely get a second opinion.
The consultation went as usual, and I received an alternative treatment option.
I expected the doctor to tell me whether I am being treated correctly and whether radiofrequency ablation was necessary. The consultation ended quickly, and I didn't have time to ask my questions.
Anonymous • PET/CT
Ukraine
May 15, 2026
Verified review.
My experience has been entirely negative. The treatment prescribed did not follow the standard protocol for this condition. Under this treatment, the condition only worsened. I was given information about the most effective treatment currently used worldwide. I never received the doctor’s conclusion following the consultation, even though I asked for it several times. And on top of everything else, judging by the result, it wasn’t worth €500. A treatment that doesn’t work, with no documentation whatsoever. Just a conversation with a professor to whom you have to ask a thousand questions and figure out the treatment options for your condition yourself, because he offers nothing and explains nothing.
Speed of service delivery
The treatment recommended by the professor at the Austrian clinic was completely at odds with standard treatment protocols I never received the discharge summary, even though I had asked for it several times
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Certifications & accreditations

European Society of Endocrine Surgeons

Qualifications

Prof. Klaus Kaczirek is an Austrian endocrine and oncologic surgeon at Wiener Privatklinik. He served as the Deputy Head of General Surgery at Vienna General Hospital (AKH). The specialist treats neuroendocrine tumors and hormone-producing cancers using advanced laparoscopic techniques.

Specialization and Surgical Focus

Prof. Kaczirek treats complex conditions affecting the hormone-producing glands and digestive system. He uses minimally invasive methods to help patients recover faster. These techniques also provide surgeons with higher precision during the procedure. The doctor treats malignant tumors, benign cysts, and hormone disorders.

  • Thyroid and parathyroid gland surgery
  • Adrenal gland resections for tumors and hormone disorders
  • Surgery for neuroendocrine tumors and hormone-producing cancers
  • Liver resection for hemangiomas, primary cancer, and metastases
  • Distal pancreatectomy and treatment of pancreatic cysts
  • Repair of inguinal and incisional hernias

Professional Background

Dr. Kaczirek has held clinical leadership and academic positions in Vienna. He currently serves as a Senior Consultant at Wiener Privatklinik. The specialist has also worked to advance visceral surgical standards throughout Austria. He additionally serves as a Senior Consultant at the Medical University of Vienna.

  • Senior Consultant – Wiener Privatklinik and Medical University of Vienna (Current)
  • Deputy Head of Department – General Surgery, Vienna General Hospital (AKH) (2010s)
  • Professor of Surgery – Medical University of Vienna (2000s)

Education and Training

Prof. Kaczirek completed his medical training at the University of Vienna. He specialized during a period of innovation in abdominal surgical techniques. His academic foundation supports his role as a mentor for young surgeons. This training allows him to provide specialized care for endocrine conditions.

  • 1980s – Medical degree, University of Vienna
  • Residency – General and visceral surgery, Medical University of Vienna
  • Specialty Certification – Endocrine surgery

Research and Contributions

The specialist is a researcher in the field of endocrine tumor biology. His studies helped establish Vienna as a major center for endocrine surgery. He contributes to clinical trials that set international treatment standards for thyroid malignancy. These trials also help define protocols for adrenal diseases.

  • Published extensively on minimally invasive surgery and thyroid malignancy outcomes.
  • Contributes to the development of international treatment standards for endocrine oncology.
  • Helped establish Vienna as a center for endocrine surgery.
  • Lead investigator in clinical trials for endocrine tumor treatments.

Professional Memberships

  • European Society of Endocrine Surgeons (ESES)

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