15 November - Covid 19 Update

Dear patients,

The Austrian government has communicated a further tightening of the measures, which will be implemented from November 17, 2020. There are all-day exit restrictions, but to be able to leave your apartment or house for special reasons. A visit to the doctor is explicitly such a reason.

We are therefore happy to be there for you in our practice. If you do not want to keep your appointment as a result of the lock down, it is essential that you cancel your appointment in good time. Only in this way can we optimally keep the capacities of our practice ready for our patients.

At this point, as usual, we would like to point out that we adhere to the highest hygiene standards on our part, including very regular surface cleaning. We also ask you not to come to our practice if you have relevant symptoms of illness (such as fever, dry cough, tiredness) or if you have had risk contact with a person who is proven to be infected or who is currently being tested. In these cases we ask you to cancel your appointment at short notice.

In addition, here is the reference to our telemedical consultation: Dr. Ferenci offers a telemedical consultation via video call on Mondays and Wednesdays. You can find more information here. If you do not want to or should not leave your home, you can discuss your dermatological problems such as acne, eczema, hair loss and other visually recognizable topics with us or have treatments that have already taken place checked. For new patients, it is necessary to sign and upload a data protection agreement sent by appointment.

We are looking forward to your visit.

Best Regards

Dr. Johannes Bisschoff. Dr. Yvonne Ferenci + team


1 November - New laser for red vessels in our practice

RosaceaDear patients,

We are extremely pleased that we can offer you treatments with our new KTP laser(QuadroStarPROYELLOW) for red vessels in time for the start of the cold season. This laser can be used to treat red veins on the cheeks and nose (Rosacea), as well as cherry hemangiomas all over the body. This innovative treatment method is almost pain-free and improves the appearance of your skin significantly.

Make an appointment for the first consultation in our practice.

Best Regards

Dr. Johannes Bisschoff, Dr. Yvonne Ferenci + team


31 October - Christmass time!

Dear patients,

Christmas is approaching with great speed. This also raises the question of what gifts should look like this year. We have three special care packages for you. These cover various different skin types and are sure to be well appreciated by the recipient.

  • Antiaging power
  • Spiritual & natural beauty
  • Regeneration from the outside and from within

Let us doctors advise you or ask our kind receptionists for advice. You will receive the gifts in the appropriate Christmas packaging, so that you can give it directly to your loved ones.

With pre-Christmas greetings

Dr. Johannes Bisschoff, Dr. Yvonne Ferenci & team


30 October - COVID-19 Update


Dear patients,


the developments in this pandemic will follow with tightened measures which will apply from November 3, 2020. This is creating uncertainty. Therefore we would like to give you an update on the effects on our practice.


We continue to ensure the highest hygiene standards so that you are not exposed to any unnecessary risk of infection when you visit the practice. All employees wear mouth and nose protection at all times, hand disinfection, regular surface cleaning and disinfected pens are implemented. Likewise, we ask you, valued patients, to refrain from visiting the practice if you have relevant symptoms of illness (such as fever, dry cough, tiredness) or if you have had risk contact with a person who is proven to be infected or who is currently being tested. In these cases we ask you to cancel your appointment at short notice.


However, we are adjusting our opening times. We are usually open Monday, Tuesday and Thursday until 7 p.m. We will close at 6.30 p.m. so that you and our employees can be home in time for the curfew at 8 p.m. So we start the last appointment at 6 p.m.


Monday:            7.00 a.m. - 6.30 p.m.

Tuesday          7.00 a.m. - 6.30 p.m.

Wednesday:         7.00 a.m. - 1.00 p.m.          

Thursday:      7.00 a.m. - 6.30 p.m.          

Friday:            7.00 a.m. - 1.00 p.m.            



Dr. Ferenci offers telemedical consultation hours via video call on Mondays and Wednesdays. You can find more information here. If you do not want to or should not leave your home, you can discuss your dermatological problems such as acne, eczema, hair loss and other visually recognizable topics with us or have treatments that have already taken place checked. For new patients, it is necessary to sign and upload a data protection agreement sent to you after making the appointment.


We are looking forward to your visit.

Best Regards

Dr. Johannes Bisschoff. Dr. Yvonne Ferenci + team


21 October - Rosacea


Rosacea has a way of affecting the sufferer at all times of the year. 


With my new article in the Krone, I inform about the common disease and explain how it can be managed.

As is fortunatly the case, there are many excellent therapy options for those affected! Let us help you - we have many options for light, as well as for extensive forms of the disease!


Published in "Krone" Gesund on 17 October 2020




20 October - Online consultation

I recently had the opportunity to talk to other colleagues about telemedicine and share my experiences.


In the current situation, telemedicine is an innovative way to carry out treatment regardless of location.


You can find the entire article on our online consultation page.




27 September - Alex² Allergy

We use the most modern technology to identify your allergies. The Allergy Explorer (ALEX2) can identify allergen-specific IgE antibodies against all relevant allergen sources (exception: drugs, e.g. penicillin). Whether it is animal fur, yeast and mold, insecticides, latex, mites, food or pollen - ALEX2 helps to find the allergy trigger. ALEX2 test is also loaded with many molecular allergens. These enable a better understanding of your allergy in the case of cross-reactions and food that is prone to risk for allergic reactions (e.g. peanuts) - this helps the doctor to suggest tailored diet recommendations (e.g. raw apples are not tolerated, whereas applepie do not cause any harm). With the help of molecular allergy diagnostics, allergen-specific immunotherapy (AIT) can also be used in a more targeted manner. ALEX2 is equipped with almost 300 allergens.

More information can be found here.


21 September - COVID-19 Update

Dear patients,

we are closely monitoring the worsening situation in this pandemic. On our part, we ensure through the highest hygiene standards that the risk of infection in the ordination can be reduced to a minimum. All employees wear mouth and nose protection at all times, and hand disinfection is of course provided in the entrance area. All surfaces and door handles are regularly disinfected. In the event of a positive test by one of our patients or employees, all potentially endangered patients will be contacted immediately using contact tracing.

Likewise, we ask you, valued patients, to refrain from visiting the practice if you have relevant symptoms of illness (such as fever, dry cough, tiredness) or if you have had risk contact with a person who is proven to be infected or who is currently being tested. In these cases we ask you to cancel your appointment at short notice.

We are looking forward to your next visit.

Dr. Johannes Bisschoff, Dr. Yvonne Ferenci and team


4 August Hidradenitis Suppurativa / Acne inversa

I am very pleased that our article on LAight® therapy is now published. We were able to show how this innovative method can help patients with acne inversa. I am glad that this very widespread, but still poorly researched disease, is now understood a little better. 

LAight® Therapy Improves Hidradenitis Suppurativa in Patients Declining Surgical Intervention: Two Case Reports


17 June Psoriasis

Update refresher Vortrag Dr. Bisschoff Wien PsoriaisisUpdate refresher Vortrag Dr. Bisschoff Wien Psoriaisis

In the time of Covid-19, our medical training courses are now mostly taking place online. Today I was a speaker at the Austrian update for general practitioners on the better cooperation between general practitioners and dermatologists in patients with psoriasis.




6 June Netdoktor in May Viral disease

STD sexuell übertragbar NetdoktorViruserkrankungen STD Genital SexuellübertragbarSTD sexuell übertragbar Netdoktor


New in the May issue of "Netdoktor" with a focus on viral diseases - my article on sexually transmitted diseases. In this issue the different diseases is dealt with, with which one can get infected by way of sexual intercourse. Prevention remains the best therapy!






19 May Online consulation

Online consulation, online medicine, LARA, Uniqa


Today I was invited by the insurance company UNIQA in a video conference with over 50 medical colleagues from all over Austria to report on our experiences with the video consultation. We have been a LARA partner (UNIQA's program for private insured persons) for a long time, and were able to share valuable experience with the online consultation with medical colleagues.




May 4 Melanoma Awareness Month May

Today the melanoma awareness month starts. We would like to draw attention to skin cancer in this time. Important is to think of sun protection not only im May, but also in the coming summer months. It is important to check you own skin but also to visit a dermatologist for a skin check once a year. Here you find more information on melanoma and non-melanoma skin cancer.


As sun protection and skin cancer prevention is important to us, all patients who come for a skin cancer check-up in the month of May will receive a free sun protection (SPF) product fitting their skin type. You can make an appointment online or via-phone now. 




April 20 COVID-19 Update 

Lady online appointment

Dear Patients,

Since the COVID-19 regulations were eased on April 14th we have decided to also resume normal practice. We are happy to announce that we are again there for you from Monday to Friday for all dermatological needs. We will still offer our online tele-dermatology consultation. Please find the times on our booking system here.

According to the viennese medical board, normal doctors’ appointments can take place again. Please remember to bring a face mask to your appointment. We are taking all measures to make sure that we keep you safe during this time.

We are looking forward to see you in our practice again soon!

April 5 COVID-19 Update 

Lady online appointmentOur adjusted opening times for the week April 6- April 10 will be:

Monday April 6: 8-11h00
Tuesday April 7: 9-18h00, Videoconference from 8-10h00
Wednesday April 8: Practice closed, Videoconference from 8-16h00
Thursday Apirl 9: Practice closed, Videoconference from 8-16h00
Friday April 10: 8-14h00

For questions our reception is available during opening times. Outside of these times, your call will be rerouted to a call center.

Please also make use of our online tele-dermatology consultation service. You can book an appointment over our website. One of our doctors will be there for you.


March 15, COVID-19 

Lady online appointmentDear patients,

society is amid a crisis which we can only solve together. Due to the current situation I need to adjust my opening times:

Monday March 16: 7-19h00
Tuesday March 17: Practice closed, Videoconference from 13-16h00
Wednesday March 18: Practice closed, Videoconference from 13-16h00
Thursday March 19: Practice closed, Videoconference from 8-16h00
Friday March 20: 8-14h00

The opening times for the next week March 23-27 will be communicated but will most possibly be similar.

For Questions do not hesitate to contact us during our opening hours. After these hours our call center is available Monday to Friday 7-19h00.

We appeal to you our dear Patients: If you have any symptoms or had any contacts to people affected or traveled to a high-risk area to please postpone your visit.

We as team will keep highest hygiene standards, so we so not pose a risk to you. It is important for us to be available for your dermatological needs. We keep to all recommendations of the Viennese Medical society.  Empfehlungen der Wiener Ärztekammer.

We will offer a telemedicine consultation via videocall. More information on this offer you find here. You can, without leaving your home, consult us on problems like acne, eczema, hair loss and other visual dermatological problems. This can also be used as a control appointment for treatments. New patients need to submit a data protection form before they can use this service. How it works you can see here.

Take care and stay healthy!

Dr. Johannes Bisschoff, Dr. Yvonne Ferenci and Team


March 10, New Article on probiotic skin care

Probiotics are part of our daily life. We are confronted with options in nutrition but also more in cosmetic products. Learn more here:


March 7, New Article in JATROS Dermatologie & Plastische Chirurgie - Prevention of squamous cell carcinomasJatros TitlepageJatros  Skin cancer article


Actinic keratosis and consequent squamous cell carcinomas will become a general problem in our aging population. Important is good sun proctection, but also other measures an be taken to reduce the risk. The whole scientific article can be found here.









March 5, Hospitation in  Ludwigshafen, Germany with PD Löser

Within the framework of the Mentorship programme of the DGDC I could spend 3 days to learn more of dermatological surgery and expecially nail surgery. I am pleased to bring back many new skills to my practice and to my patients. 

February 20, 2020 - New article on rosacea

Rosacea article on therapy and causeOne of my latest articles about rosacea was published today in











February 17, 2020 - More than just skin

Talk on Urticaria Talk on urticaria for pharmacistsTalk on urticaria by Dr BisschoffI worked alongside my colleagues Prim. Priv.-Doz, Dr. Peter Peichl, a rheumatologist from the Evangelical Hospital and OA Dr. Johannes Raff, a dermatologist from Wilhelminen Hospital, to offer further training in conjunction with the Austrian Chamber of Pharmacies for a target group of pharmacists. Pharmacists are often the first point of contact for patients, so they were very interested in further training on skin conditions.



January 20, 2020 - Ball season starts

Get ready for the upcoming glamorous ball season with a fresh new look

When the winter seems endless and you are feeling tired, it is common to observe pale and lifeless skin. If that sounds familiar, it is time to look fresher and improve your skin's radiance. In addition, the winter season is perfect for micro needling, mesotherapy and peeling because of the lack of sun. Laser treatments and the removal of troublesome skin changes are also particularly good at this time of the year because the treated areas do not have to be protected from the sun. Make an appointment directly or give us a call if you have any questions.

January 4, 2020 - KroneFIT 2020 in Vienna

On January 11 and 12, 2020, a health fair will take place at the Erste Campus close to the main train station (Hauptbahnhof) and the practice. You can attend top-class lectures on various topics in medicine, nursing and healthcare completely free of charge. This includes my lecture on acne.


 Kronefit programme 2020






January 1, 2020 - New team member -  Dr. Ferenci

Picture of Dr FerenciHappy New Year to all our patients. We have some great news for the New Year as we welcome Dr. Ferenci as a part of our team.

My colleague has a wide range of knowledge and experience in dermatology. Particularly worthy of a mention is her holistic approach and her expertise, especially in the area of ​​skin cancer prevention and surgery, thanks to her many years of training in the renowned skin department of the Rudolf Foundation.

With her additional training in nutritional medicine and acupuncture, we can now offer complementary services for our patients in these areas. More information about Dr. Ferenci can be found here.





December 24, 2019 - Merry Christmas

We wish our patients a Merry Christmas and Happy Holidays. We are on holiday for the Christmas week, but will be back here from December 30th.

November 4, 2019 - DGDC mentoring program

I was recently selected for the Dermatological Surgical Mentoring Program of the DGDC (German Society for Dermatosurgery). It is a two-year program, and only two dermatologists were selected from the German-speaking area so a colleague and I will receive intensive training in this field. It is a great honor for me, and I am very happy to continue learning with my mentor from Hamburg, Dr. Guido Bruning. I look forward to utilizing this enhanced knowledge with my patients.


November 1, 2019 – Appointments now available on Thursdays at the Therapiezentrum at the Vienna main train station (Hauptbahnhof)

From November you can also make an appointment with us at treatment center at the main train station (Hauptbahnhof). I am pleased to introduce you to my practice assistants: Mrs. Frank, Mrs. Kaplan and Mrs. Stengel. Welcome!


October 31, 2019 - No longer in the Aurora Medical Center

My first year in Vienna flew by and I look back on a year at The Aurora. From November 2019, I will completely relocate my practice to the treatment center at the main train station (Hauptbahnhof) so that I am available for my patients in one location.


October 25 and 26, 2019 - Best of Dermatology, Vienna

This year I will attend three follow up events. Best of Dermatology in Vienna was the second of three. The latest congresses and scientific publications are summarized and presented in this type of event. Since the field of dermatology evolves extremely quickly and, despite further and advanced training, I cannot be everywhere at once, Best of Dermatology was a very educational event allowing me to stay current on the latest medical knowledge in my field.


October 18 and 19, 2019 - Intensive Academy for skin cancer prevention

An exciting intensive academy took place at the Fotofinder (R) company in Bad Birnbach. The lecturers at this academy were Prof. Dr. Andreas Blum (Constance) and Prof. Dr. Holger Hänßle (Heidelberg). Both are experts in skin cancer prevention and mole check, as well as pioneers in the field of artificial intelligence.


October 9 to 13, 2019 - EADV Congress Madrid, Spain

This year the main topic of the European Dermatological Society (EADV) was of particular interest to me - Artificial Intelligence. I learned many new insights into artificial intelligence and how we are already implementing it, and how we will use it even more in the future for the benefit of our patients! 


4th and 5th October 2019 - ÖGDKA (Austrian Society for Cosmetic Dermatology and Age Research) annual conference

Constructive exchanges took place with colleagues in the beautiful city of Graz at the conference designed for sharing the latest updates in cosmetic dermatology and age research. Interesting speakers from Austria and Europe gave lectures, and it was a great pleasure to listen to the presentation of one of my mentors (one of the first doctors who worked with hyaluronic acid in Europe), Prof. Rzany from Berlin.


27th to 29th of September 2019 - BVDD (Professional Association of German Dermatologists)

Together with nine other dermatologists at the Berlin marathon weekend, we completed our own training marathon. I am now a qualified moderator for quality improvement workgroups. An inspirational training event with an exciting, non-dermatological focus.


September 13 and 14, 2019 - Inflammation Summit

This weekend I was in Linz at the Inflammation Summit 2019, which is an exciting platform for the discussion of chronic inflammatory diseases. Gastroenterologists and rheumatologists were present alongside specialist dermatologists to share experience and ideas on a variety of skin conditions (especially psoriasis, acne inversa, allergies etc). In order to offer the best treatment, it is important to consider the body of the patient in its entirety, making this type of interdisciplinary approach of great relevance to our practice.

Inflammation summit 2019













September 3 and 4, 2019 - Swiss Estetic

Another two exciting days for me as a speaker at the Swiss Estetic company located at beautiful Lake Zurich. As always, interesting conversations took place between the participants, as well as an interactive treatment demonstration. The aim of the treatment is to create a fresher, natural look and the special focus was on hyaluronic acid treatment, peelings, mesotherapy / micro needling and a new concept for eye treatment.

Filler treatmentspeaker dr bisschoff











August 5, 2019 - Artificial Intelligence

Dr Johannes Bisschoff´s dermatological practice is one of the first to work with artificial intelligence. To be more precise, with a computer program (Fotofinder) that is equipped with artificial intelligence and is therefore better able to detect skin cancer.

More information



August 3, 2019 - Freizet Kurier

Today I share with you an exciting article on skin and genetics from the Freizeit Kurier magazine. This topic is very important to me. I am sure that the current explosion of knowledge will permanently change dermatology as we learn more and more about our genetics and their impact on our organism. I am confident that in the future we will be able to offer more tailor-made and targeted preventive work.

Kurier artikel für immer jung 1Kurier artikel für immer jung 2



















August 1, 2019 – Appointments also available on Fridays

New: As of August 1st, 2019, I am expanding my office hours.

From now on my practice will also be open on Fridays at the Therapiezentrum am Hauptbahnhof at the main train station (Hauptbahnhof, Gertrude-Fröhlich-Sandnerstr 13/1, 1100, Vienna). As you already know, 07:00am appointments are available for those who cannot attend during working hours.

I am also expanding the offer to the Aurora Medical Center where appointments will be available between 1pm and 7pm in the future.


July 17, 2019 - Cooperation UNIQA

From now on, a LARA partner doctor will be available at the practice at the Therapiezentrum am Hauptbahnhof (Hauptbahnhof). LARA is an Austria-wide partner network of healthcare providers who work with UNIQA. In certain cases, direct billing via UNIQA is possible.


July 16, 2019 - New article on acne inversa

A new article of mine was published today on on acne inversa.

Interview Akne inversa





















July 9, 2019 - Acne inversa competence center

Another step to improve care for acne inversa patients. I will now work intensively with the Acne inversa competence center as a dermatological consultant. I am pleased that my patients now have the opportunity to receive LAight therapy in the WKZ (Wound competence center, Lazarettgasse 25, 1090 Vienna).

I am delighted to be working with the wound center, that has vast experience with Acne inversa. We will work together in an interdisciplinary manner to ensure optimal medical- and wound care for every patient.  


June 6-7, 2019 - NYU School of Medicine

Once again, I had the chance to meet with colleagues from the United States about innovations in dermatology. Like last year it is always refreshing due to the immensely valuable input that is received. I am very excited to observe when the new drugs and technologies that are already on the market in the US will become available in Europe.

Advances Dermatology Info


















May 22, 2019 - Skin cancer prevention article

It's summer at last! But take care - the sun can be dangerous. Today my interview is about the sun and how to protect yourself from skin cancer.

 Interview sun protection and skin cancer



  • Thank you Dr Bisschoff. The medicine you prescribed worked like a bom! I appreciate the time you took to descibe my illness in simple terms and the lifestyle changes I need to make to manage my condition. Many thanks! 
    Yelp: Christiaan B.
  • I traveled from London to see Dr. Johannes Bisschof for wrinkle treatment. I was extremely impressed with my wrinkle treatments. He has a very 'natural look' approach and after everyone asked me why I look younger and more relaxed I will definitely have it done again. I have also asked him advice on my skin texture and he suggested 2 creams and my skin has never looked this good. I feel 10 years younger. I can highly recommend him! 
    Yelp: Liezel M.
  • Dr Bisschoff used a laser to treat my skin scars. I was happy with the package that he offered. He is knowledgeable, friendly and I loved the end result.
    Google: Cecile du Toit
  • Dr. Bisschoff was absolutely wonderful and a great help. He took time to make sure I was comfortable, spoke incredible English, and explained everything in a careful and detailed manner. Thanks to his help, my skin condition was solved! I would recommend him to anyone.
  • Best dermatologist in Vienna. Really cares about his patient. He is a very good listener. He spent as much time as its needed and he doesn't rush patient. His aim is actually to help people not only earn money (like some of doctors tend to do). On the top of all of that he is really positive person and he explains everything in the proper manner.



  • Excellent doctor, extremely attentive! One of the best medical experiences I had.
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