Dr. Petros Nikolaidis

M.D., PhD

Professor of obstetrics and genetics at the University of West Attica
Specialist in Fetal Medicine of Imperial College

Read more
Dr. Petros Nikolaidis, MD, PhD, is a renowned specialist in fetal medicine, a perinatologist, and a professor of obstetrics and genetics at the University of West Attica, specializing in obstetrics and gynecology with a focus on high-risk pregnancy, VBAC, and laparoscopic surgery at Imperial College, London.

He was trained in Athens and London. He holds a degree in fetal medicine, and his PhD thesis was in the field of genetics at Imperial College. A pioneer in fetal medicine, he founded the first fetal medicine unit in Greece, at Mitera Maternity Hospital, in 1991, a Panhellenic reference center for fetal ultrasound. He was also the first to introduce all the new prenatal fetal tests.

From 2001 he has been a professor of obstetrics & genetics at the University of West Attica, where he introduced the Obstetric Ultrasound course and was responsible for the undergraduate course for high-risk pregnancy.

Professor Petros Nikolaidis is the founder and chairman of “Embryoitriki-genetiki” in Maroussi, a leading fetal medicine and genetics diagnostic center that he set up in 1998. It expanded into a growing network of fetal and gynecological screenings in several cities. At the same time, he collaborated with State Maternity Clinics and sent his students for internships in hospitals throughout the country.

In 2017, Petros Nikolaidis became a certified doctor from the Alinsod Institute for the THERMIva®, a groundbreaking method of vaginal rejuvenation with radio frequencies. THERMIva® is a non-surgical feminine treatment for stress incontinence, overactive bladder, atrophic vulvovaginitis, orgasmic dysfunction, vulvar dystrophy, and modern management of menopausal symptoms.

Dr. Nikolaidis has a significant volume of publications in international scientific journals and chapters in medical books and is the editor of the textbooks “Human Genetics” and “Obstetrics and Gynecology and Fetal Ultrasound,” which are the basic textbooks of the University of West Attica’s faculty. He is also a founding member of the International Society for Ultrasound in Obstetrics and Gynecology and a member of various scientific societies, such as the European Down’s Syndrome Screening Group, European Federation of Societies for Ultrasound in Medicine and Biology, British Medical Association, British Medical Council, British Ultrasound Society, Athens Medical Association, Hellenic Society of Obstetrics and Gynecology, Hellenic Society of Perinatal Medicine, and Hellenic Ultrasound Society.

1981. Degree in Medicine, Athens University Medical School

1987. Doctoral Degree, Athens University Medical School

1989. Postgraduate Degree of Specialization in Obstetrics and Gynecology

1989. Senior Registrar in Obstetrics and Gynecology, St. George’s University, United Kingdom

1989. Lecturer in Fetal Medicine, Royal Postgraduate Medical School, University of London

2002. Professor in Obstetrics and Genetics at the University of West Attica

  • Use of New Technologies in Gynaecology: Laparoscopic Surgery
  • High-risk pregnancy monitoring and management (35 years of experience)
  • Gynaecological and Obstetric Ultrasound
  • Genetic Embryonic Ultrasound Screening (over 110,000 screenings)
  • Prenatal diagnostic procedures (over 85,000 procedures)

Amniocentesis (early – late)

Chorionic villus sampling (transvaginal – transabdominal)

Foetal blood sampling (cordocentesis – intrahepatic sampling)

  • Prenatal therapeutic interventions

Amnioinfusion

placement of an embryonic catheter

intravenous foetal transfusion

  • Biophysical assessment of the embryo

Blood flow measurements (Doppler)

biophysical profile

cardiotocographic monitoring

  • 3D-Ultrasound
Professor Petros Nikolaidis has a significant volume of publications in international
scientific journals (Lancet, British Journal of Obstetrics and Gynecology, American Journal of Obstetrics and Gynecology, Prenatal Diagnosis, Human Molecular Genetics, European Journal of Human Genetics), and chapters in medical books. He is also the editor of the textbooks “Human Genetics”, “Obstetrics and Gynecology and Fetal Ultrasound”, which are the basic textbooks of the University of West Attica’s faculty.

Citations                                                    567

  • 1984-1988 Lesson at University Teaching Hospitals for Undergraduate Students
  • 1988-1990 Lessons and Lectures for Postgraduate Students
  • 2002. Lessons in Genetics and Obstetrics Ultrasound as a professor of Obstetrics and Genetics at the University of West Attica
Genetics (2003)
ed. Pasxalinos.

Human Genetics (2004)
textbook of medical genetics, as author.

Obstetrics & Gynecological Ultrasound (2011)
textbook of ultrasound principles and diagnostic applications, as editor.

100 Current Issues in Obstetrics and Gynecology (2015)
ed. Desmos.

Accreditations

They said about us

A gift that all women should give to ourselves! Mr. Nikolaidis, a person who deeply loves and respects women, a pioneer in menopause treatments, with ThermiVa gives us back our lost confidence, our sexuality and the feeling that yes, there is life and pleasure and joy and expectations in menopause, which is now a woman’s second “adolescence”! We learn to listen to our body and its needs, to love it and honor it thanks to such treatments and the wonderful team of Mr. Nikolaidis! Menopause is not a taboo, nor are its side effects, we speak, we listen, we get informed and we move forward with strength and optimism thanks to such scientists, in the best years of our lives! Thank you for everything, wonderful team ❤️🙏!
Despoina D., April 2026, Athens
I went by chance to Mr. Nikolaidis for problems of severe vaginal atrophy, vaginal dryness and dyspareunia. From the very first moment I felt very comfortable with him so that I could express honestly and at ease everything I was going through. The results were amazing and I feel very lucky that I met him and can have the life I had before menopause
Christina M., March 2026, Athens
The doctor of my children!! My own doctor! Above all, a human being who is by your side in whatever you may need!! Always honest and attentive to everything concerning the fetus!!! A remarkable scientist with knowledge that is certainly hard to find nowadays!! There was not a single day that I felt insecure!! By our side in every concern!! The greatest gift was having you with us throughout this whole journey. Thank you for everything.
Evaggelia P., February 2026, Athens
My experience with Mr. Petros Nikolaidis, in both of my pregnancies, was excellent from start to finish. He is a highly qualified scientist, with deep knowledge of his field and a genuine interest in his patients. From our very first meeting, he made me feel comfortable and explained every stage of the process in a simple and understandable way. He stands out not only for his professional competence, but also for his human approach — always available to answer questions and offer support during such a sensitive period. His attention to detail and dedication to achieving the best possible outcome are truly remarkable.
Maria K., April 2026, Patras
An excellent professional, honest, straightforward and above all fully informed. It is clear that he has passion and love for what he does. A very friendly environment at his clinic in Patras!
Penny B., March 2026, Patras
The best experience with an exceptional doctor! I have had all the important examinations of my pregnancy with him, such as the nuchal translucency scan, second-trimester anomaly scan, Doppler and biophysical profile, and every visit was flawless. His advice is always valuable and makes me feel safe and confident. I highly recommend him and thank him very much!!!!
Nimelda G., April 2026, Kalamata
Excellent service! Friendly environment! Our first baby and the doctor made us feel very comfortable, answered all the questions we had, approaching each topic in a calm and pleasant way! We sincerely thank you for the entire experience!
Maria K., April 2026, Kalamata
Professionals! Amazing team! A warm space that radiates a sense of familiarity! Kind people who explain everything that is happening and make you feel safe! We highly recommend them!!
Lena S., February 2026, Sparta