Gynecologist Küsnacht-Zurich - PRAXIS GYNÉ Lang
Dr. med. Niklaus Lang

I am a specialist in gynecology and obstetrics with a focus on surgical gynecology and have been in private practice for more than two decades. My practice is centrally located in Küsnacht (Zurich). The empathetic, respectful and committed specialist consultation and care is an important concern for me and my team. 

In addition to basic gynecological-obstetrical care, over the years I have developed a focus and special interest in surgical activities in the gynecological field. From the initially traditional spectrum of operations through abdominal incision or vaginal access, the interventions have visibly developed in the direction of laparoscopic or "keyhole surgery". I am particularly interested in endometriosis, infertility and minimally invasive hysterectomy.

I also take great pleasure in accompanying my patients through their pregnancy to delivery at the Hirslanden Clinic in Zurich. I attach great importance to being able to offer practice and hospital activities "from a single source": "In the event of an operation or birth, I will accompany you in the affiliated hospital and will also be responsible for you there around the clock." This extremely popular service is available either with supplementary hospital insurance (private or semi-private) or with an upgrade.

Your specialists for gynecology in Küsnacht-Zurich

Dr. med. Niklaus Lang

Specialist & Owner
Practice owner since 1997

FMH in gynecology and obstetrics
Focus FMH for operative gynecology
Certificate of competence in pregnancy ultrasound

Foreign languages

  • English, French, Italian

Partnerships / Other activities

  • Past-President of the Gynecological Association of the Canton of Zurich
  • Partner of the Physicians Network Breast Center Zurich
  • Partner of the Tumor Center Hirslanden
  • Partner of the medgate network of physicians
  • Specialist Representative Gynecology and Obstetrics Clinic Hirslanden
  • Vice President of the Management Committee of HirsMed.Net (network of physicians at the Hirslanden Clinic Zurich)
  • Member of the management board of Medicalculis (calculation systems for physicians)
  • Member of the Swiss Menopause Society
  • Member of the Swiss Society of Gynecology and Obstetrics (SGGG)
  • Member of the Swiss Society for Ultrasound in Medicine (SGUM)
  • Member of the Society of Endometriosis and Uterine Disorders (SEUD)


  • 1989
    State examination at the University of Zurich
  • 1990-91
    Surgery, University Hospital Zurich (Chief Physician Prof. Dr. med. F. Largiadèr)
  • 1991-92
    Gynecology and Obstetrics, Uster Hospital, (Head Physician Dr. med. F. Neuenschwander)
  • 1992-95
    Gynecology and Obstetrics, Cantonal Hospital Aarau (Head Physician Prof. Dr. med. W. Stoll)
  • 1995-97
    Senior Physician Gynecology and Obstetrics, Spital Schweiz. Nursing School, Zurich (Head Physician Prof. Dr. med. J. Kunz)
  • 1997
    Training in sonography of the infant hip, Stolzalpe, Austria (a.o. Univ. Prim. Dr. med. R. Graf)
  • 1998
    Nutritional consultation PRECON Switzerland, Basel
  • 2003
    Intensive seminar in infertility assessment and therapy (Prof. Dr. med. Bruno Imthurn, Scuol)
  • 2022
    Completion of the 3-part training in gynecological endocrinology and reproductive medicine (Prof. Petra Stute, Prof. Michael von Wolff)

Continuing education and training

  • Regular attendance of congresses and continuing education events in the following specialties:
  • Ultrasound diagnostics
  • Sterility assessment and therapy
  • Laparoscopic surgery ("buttonhole surgery")
  • Diagnostics and therapy of the female mammary gland
  • Diagnostics and therapy of menopausal problems (after the change)
  • Urinary incontinence (involuntary loss of urine)
  • Anti-aging / hormone therapy

Dr. med. Marion Stirner


FMH Gynecology and Obstetrics
Certificate of competence in pregnancy ultrasound
Certificate of competence in TCM and acupuncture

Medical assistant since September 2010
born 1969, born in Aalen (D)

Foreign languages

  • English, French, Italian, Dutch


  • 1990-1996
    Study of human medicine at the University of Ulm
  • 1996-1997
    Practical year
  • 1997-1999
    Internship in gynecology and obstetrics at the Red Cross Hospital Würzburg, MGH Schwäbisch Gmünd
  • 1999
    Doctorate in medicine
  • 1999-2002
    Assistant physician at the gynecological clinic Kreiskrankenhaus Heidenheim
  • since 2002
    Specialist FMH Gynecology and Obstetrics
  • 2003-2010
    Senior physician at Zollikerberg Hospital under Prof. Dr. J. Kunz/Dr. E. Vlajkovic
  • 2011
    Certificate Ear Acupuncture
  • 2012
    Certificate of Competence in Acupuncture and Traditional Chinese Medicine (TCM)
  • 2020
    Laser certificate of competence for laser treatments of the anogenital skin and mucosa

Continuing education and training

  • 2010-now
    Regular continuing education in adolescent gynecology

Dr. med. Eva Hirzel


FMH Gynecology and Obstetrics
Certificate of competence in pregnancy ultrasound
Urogynecology (incontinence/bladder weakness)
Adolescent Gynaecology

Medical assistant since May 2020
born 1982, born in Karlsruhe (D)

Foreign languages

  • English, Spanish


  • 2003-2005
    Study of human medicine at Eberhard-Karls-University Tübingen
  • 2005-2009
    Study of human medicine at the University Medical Center Hamburg-Eppendorf
  • 2010
  • 2010-2012
    Resident in gynecology and obstetrics, Zug Cantonal Hospital (Dr. Ch. Honegger)
  • 2012-2017
    Resident in gynecology and obstetrics, University Hospital Zurich (Prof. Dr. med. R. Zimmermann, Prof. Dr. med. D. Fink, Prof. Dr. med. B. Imthurn)
  • 07/2017
    Specialist FMH Gynecology and Obstetrics, University Hospital Zurich
  • 2017-2020
    Senior Physician Gynecology and Obstetrics, Zug Cantonal Hospital (Dr. med. Ch. Honegger)

Continuing and further education

  • 2020-now
    Regular continuing education in gynecology and obstetrics, especially adolescent gynecology as well as urogynecology
  • Laser workshop for gynecology treatments, Kantonsspital Frauenfeld 2021
    Certificate of competence in pregnancy ultrasound SGUM

Dr. med. Nicole Viereck


FMH Gynecology and Obstetrics
Sexual consultation
Anti Aging/Better Aging

Medical assistant since February 2022

Foreign languages

  • English


  • 1987-1993
    Study of human medicine, Philipps University, Marburg/D
  • 1996
    Doctorate, Philipps University, Marburg/D
  • 1994-2001
    Medical Center for Obstetrics and Gynecology, Philipps University, Marburg/D; (Prof. K.-D. Schulz, Prof. E. Daume, Prof. S. Schmid), Obstetric Ultrasound (Prof. M. Meyer-Wittkopf)
  • 2001
    Specialist in gynecology and obstetrics
  • 2002-2005
    Gynecological practice Dr. med. A. Suren, Göttingen/D
  • 2006-2007
    Specialist in gynecology at the Frauenfeld Cantonal Hospital (Prof. M. Fehr), including anti-aging consultation (Prof. J. Eberhard)
  • 2009
    Senior physician in the obstetric ultrasound department of the Frauenklinik Kantonsspital Frauenfeld (Dr. med. M. Hüsler)
  • since 2012
    Consultant physician at the Frauenklinik Frauenfeld, Bladder and Pelvic Floor Center (Prof. V. Viereck), including sexual medicine consultation hours

Further education and training

  • Certificate Working Group Urogynecology and Plastic Pelvic Floor Reconstruction (AGUB I)
  • IOTA Certificate (International Ovarian Tumor Analysis)
  • Certificate German Society for Prevention and Anti-Aging Medicine 
  • Interdisciplinary focus on psychosomatic and psychosocial medicine
  • Training in sexual medicine and sexual counseling, Prof. C. Buddeberg
  • Training in systemic sexual therapy, Prof. U. Clement
  • Training Sexocorporel (currently diploma course), Dr. med. K. Bischof
  • Certificate Sex Therapy of the German Society for Sex Research

Our practice assistants in Zurich

Anna Ponte

Medical practice assistant

Laura Carenini

MPA in training

Laura Carenini

MPA in training

Consultation hours in the Gyné Lang practice

We are pleased to be able to offer an additional, attractive service in the Gyné Lang group practice. Prof. Dr. Stephan Lautenschlager is the head physician for dermatology at the Stadtspital Triemli and conducts a consultation every 2 weeks. The spectrum covers the entire dermatology including skin cancer screening with evaluation of moles as well as gyneco-dermatology in particular.

Registrations are accepted at our reception or via the practice telephone (Dr. Lang +41 44 912 25 25).

Consultation hour online practice

No waiting time for an appointment, no need to travel and yet competent dermatological advice within a short time: thanks to the online platform derma2go, developed by Swiss dermatologists, you now have the opportunity to clarify your questions about skin problems easily and securely online.  Through his online practice, Prof. Dr. med. Stephan Lautenschlager will answer your inquiry within 24 hours, Monday through Friday, in the form of a diagnosis and medication recommendation for the therapy of the skin problem. Should he ever be absent, derma2go will forward your inquiry to a specialist in the nearby vicinity.

For the online consultation, all you need is Internet access and good quality photos of the skin problem (e.g. photos taken with a cell phone), which you submit along with a brief description of the symptoms. The service, which costs CHF 75, can be paid for using common payment methods such as PayPal or credit cards. Please note that the costs are currently only covered by a few health insurance companies.

To the online practice

Practice tour

Attending physician

If you have appropriate insurance coverage (supplementary hospital insurance), I can personally attend to you during birth and surgery in the following private clinics:


Probably the most traditional and largest private clinic in the Zurich area. Beautiful maternity ward in the garden wing (opened in 2008).

Klinik Im Park, Zurich

Small and fine, a clinic with the appearance of a city hotel. The clinic was founded in 1985 by the company American Medical International as "AMI Clinic" and built next to or under the listed "Villa Moskva" in the hillside.

Both clinics belong to the Hirslanden private hospital group and, thanks to their elaborate infrastructure (maternity ward, intensive care unit, anesthesiologist on the premises 24 hours a day), have the expertise to handle even complicated medical situations and high-risk pregnancies.

Klinik am See, Zurich

The Pyramide Klinik am See is a modern private clinic with top quality medical care, state-of-the-art infrastructure, excellent hotel facilities, an individual care concept and excellent service.



Niklaus Lang, MD, works closely with the Breast Center at Seefeldstrasse 214 in Zurich. He is a partner of the physician network Brust-Zentrum Zürich.

LABOR Toggweiler, Zurich

Thanks to decades of experience and modern technical facilities, the Toggweiler laboratory offers Dr. med. Niklaus Lang's practice an excellent service.

Emergency outside opening hours

In urgent cases outside the practice opening hours you can reach me according to the information on the practice answering machine (phone 044 912 25 25).

Should I exceptionally not call back immediately, please contact the helpline AERZTEFON,, phone 0800 33 66 55.


Pregnant patients who are about to give birth should call the midwife of the clinic where they are registered in case of labor or rupture of the membranes:

Klinik Hirslanden, Zurich
Phone 044 387 35 61



Kohlrainstrasse 10
8700 Küsnacht (Zurich)

Phone +41 44 912 25 25

Opening hours

Monday08.00 - 12.00 | 13.30 - 16.30
Tuesday08.00 - 12.00 | 13.30 - 16.30
Wednesday08.00 - 15.00
Thursday08.00 - 12.00 | 13.30 - 16.30
Friday08.00 - 15.00

In urgent cases outside the practice opening hours, you can reach me or my substitute according to the information on the practice answering machine.

Dr. med. Niklaus Lang

FMH Gynecology and Obstetrics
Focus FMH for surgical gynecology

Dr. med. Marion Stirner

FMH Gynecology and Obstetrics
Certificate of proficiency in TCM and acupuncture

Dr. med. Eva Hirzel

FMH Gynecology and Obstetrics


Dr. med. Nicole Viereck

FMH Gynecology and Obstetrics
Sex consultation
Anti Aging/Better Aging