Philip Bull, MD, .
Dr Bull is trained and board certified as a general surgeon, and is a Fellow European Board Vascular Surgery. He received his College Degree from Loyola Campus Concordia University in Montreal and his medical degree at Vienna Medical University in 1982. Following 15 years in general and vascular surgery he founded the Surgical Clinic Sievering in Vienna in 1998 and decided to devote his full time activities to the emerging specialty of phlebology (venous disorders). He trained under Prof Helmut Denck and Prof Georg Hagmüller, both passed President of The Austrian Society of Vascular Surgery. Since opening the The Sievering Vein Clinic, he has been actively involved in education and he has presented papers at numerous conferences.

Meet Our Team

Our Team is committed to offering quality and individualized care for each and every patient.  We pride ourselves on treating our patients with compassion while providing state-of-the-art surgical care.

While Dr Bull is specialised in ambulatory surgery, our associated physicians at the University Clinic  of Vienna, Professor Michael Bergmann and Professor Thomas Bachleitner-Hofmann are skilled in endoscopic, laparoscopic, colorectal, and robotic procedures. Everyone will help you make an informed decision on the surgical solution that is most appropriate for your individual medical needs. We strive to provide value by providing the safest operation while minimizing costs and length of hospital stay.

We take a team approach to your care from your first visit to the clinic through surgery and follow-up.

The team makes sure you are well informed:

  • Explaining the condition in a way you can understand
  • Describing all your treatment options, including the risks and benefits
  • Explaining what happens before, during and after each treatment
  •  Answering all your questions

Meet Our Receptionist

Our Clinical Receptionist help you through the jungle of paperwork, information brochure and keep tabs of your appointments. The receptionist is our friendly reassuring communication switch and a great source of information to get you prepared for your assessment or treatment.


The Clinic


A clinic of modern trend!

 The Sievering Diagnosis and Surgical Day Care Centre was founded to provide our patients with the finest quality health care. We offer today’s most sophisticated outpatient techniques and advances in surgical monitoring equipment such as the use of lasers and microsurgical methods.

 Today, common clinical problems require no more hospital stay: they can be performed in an ambulatory outpatient clinic. Our treatments range from the standard surgical therapy to minimal access surgery. Our centre provides the highest quality of care in a warm personalized setting. Procedures are performed in safe, clean surroundings by an experienced, caring staff, for those patients whose surgical needs do not require a hospital stay. Because we specialize in outpatient surgery we can devote individual time and attention to you. After all, wouldn’t you rather be at home that evening, in your own bed or easy chair surrounded by your family?

 Bring to the Appointment:

Insurance Card, Referral Forms (if applicable), Previous Health Records. Pertinent medical records (x-rays, blood work, growth curves, etc.)


First visit (Medical history form)

In order to ensure specific investigation or treatment, we need from you, as a new patient, all information concerning your health. Fill out the Medical History Form and print 2 copies, one for you and one for the clinic.

 Please click here to fill out the Medical History Form.

 The all-in-One Diagnosis and Surgical Day Care Centre with modern facilities

Our services

·         Diagnosis and Treatments

·         Inpatient and Outpatient Surgery

·         Cancer Screening

 Our specialty fields

·         Phlebology

Varicose Veins

Led Ulcers



·         Proctology



Pruritus Ani

Colon Cancer

·         Gastro-Intestinal

Reflux Disease


Our advantages

·         Latest technologies

·         Minimally invasive procedures

·         Excellent clinical and aesthetic results

·         Personalized care

·         Highly specialized professionals

·         Quick recovery

·         Pleasant and friendly environment

·         Affordable prices

·         Private atmosphere

·         Personalized treatment plan


Our facilities

·         Ultrasound

·         Colour Doppler Ultrasound

·         Duplex Sonography

·         Doppler Ultrasound

·         Light reflection-Rheography/Photoplethysmography

·         Manometry

·         Biopsy

·         Laser Treatment


Varicose Veins

Vein diagnosis and therapy with Sclerotherapy or Phlebectomy



Our Colorectal Centre is the leading haemorrhoid treatment facility. By using a state-of-the-art almost painless, minimally invasive treatment laser-assisted procedure, we provide lasting relief from haemorrhoids without lengthy recovery times.


Cancer Screening

Precise endoscopy and ultrasound examination


Vascular diseases

Extensive diagnosis with Colour Doppler Ultrasound

 In order to provide our patients with the highest quality surgical care available, our practice is limited on the assessment and treatment of general surgical conditions. If you do not have a family doctor, we will gladly refer you for your non-surgical needs.

 For your information:

This page has been provided for your information and to answer common questions. This website has been prepared to answer questions about a variety of circulatory problems, ranging from cosmetic blemishes through to more serious underlying circulatory problems. The site is intended to be a simple guide, answering commonly asked questions. It does not replace a formal consultation with a vascular or vein specialist, who will be in a better position to answer your questions fully.



At the Sievering Clinic we are committed to providing personalized and compassionate service to all our patients and offer state-of-the-art surgical techniques.


Our diagnosis services include:

Anorectal Ultrasound

Arterial (vessel) Diagnosiss

Chromoendoscopy and NBI

Duplex Sonography


Endoscopic Photography

Endorectal Sonography

Gastrointestinal Diagnosis


Colonoscopy / Proctoscopy / Sigmoidoscopy

Cancer Screening

Light reflection-Rheography/Photoplethysmography

Manometry (Anorectal)


Trendelenburg Test

Ultrasonic Doppler sonography (USD)

Ultrasound-guided Aspiration

Venous Diagnosis


At the Sievering Clinic we are committed to providing personalized and compassionate service to all our patients and offer state-of-the-art surgical techniques.

 Our treatment services include:

Anal Fissures Therapy

Endovenous laser Therapy

Haemorrhoidal Ligation / Sclerotherapy

Laser Photocoagulation

Small Plastic Surgeries

Skin Tumour Removal



Nail Plastic


Wound Care