Leading hair restoration since 1970, Mr. Kostas P. Giotis founded DHI Global Medical Group

Achievements - 1970







The First DHI clinic in Palo Alto, CA


DHI Global Medical Group expands to France. DHI introduces hair loss medical diagnosis on French media.

Achievements - 1992








DHI introduce micro grafting, one of the first microsurgery based hair replacement techniques.


Workshop with Prof. R.Nordstrom, writer of the first book about hair displantation

Achievements - 1995






Prof. Y.C.Kim awarded by DHI chairman Mr. K.P.Giotis for his reasearch at University of Korea.

Achievements - 1996








Pro. O’Tar Norwood presents for first time the Norwoood scales at DHI Athens

Achievements - 1996








DHI Athens becomes the first hair clinic to be awarded with the ISO 9002 Certification, a quality assurance designation that demonstrates our commitment to a consistent level of quality recognized under International standards.


Dr. J.C. Choi and Y.C. Kim, inventors of “Choi Transplanter”

Achievements - 1999









Dr. O’Tar Norwood at the 4th DHI Hair WorkShop

Achievements - 1999







DHI Global Medical Group introduces the DHI implanter, allowing for improvements in follicle viability.

Achievements - 1999








DHI Medical Group develops FUE (Follicular Unit Extraction) in conjunction with some of the finest doctors in the Hair Restoration industry.


Mr. K.P. Giotis at the Face congress, in Milan

Achievements - 2002







Direct IN Technique was developed in response to surgical innovations in hair replacement. In this procedure, up to 2,000 follicles were implanted in an out-patient session of up to 6 hours.


SHF (Single Hair follicle) technique introduced at DHI Clinics and incorporated as an enhancement of the Direct IN Technique.


DHI Total Care System is launched, bringing together extensive research, advanced diagnosis, superior treatment and the promise of lifetime support to our clients.


DHI India was launched, expanding to the Asian, South Asian and Far East markets.


DHI Athens clinic was certified with ISO 9001:2008 from TÃœV AUSTRIA HELLAS a prestigious European Organization.


DHI Medical Group introduced the Direct Hair Implantation, a minimally invasive technique, that sets new higher and quality standards in the field of Hair Restoration worldwide

Achievements - 2010






New DHI Building in London’s most prestigious medical district, the Harley St. Area, serves as DHI’s world Headquarters and Training center.


DHI Medical Group continues to lead and innovate in hair restoration science, contributing results and abstracts about current research and upcoming breakthroughs which it regularly shares and presents at the most prestigious hair science conferences around the world. In January 2012, DHI London Clinic renewed the Certification of Care Quality Commission. In November 2012, DHI Athens Clinic was certified with an ISO 9001:2008 certificate from TÃœV AUSTRIA HELLAS.


On July 25, 2013 DHI Global Medical Group signed an agreement with Walnut Healthcare, a group company of Mr Raaja Kanwar of Apollo Group, a $6.6Bn group head quartered in India, having diversified businesses across the globe, and granting exclusive rights to Walnut to expand the DHI franchise internationally in Asia, Africa and South America.. DHI Global Medical Group had granted a Master Franchise for India to another group company of Mr Kanwar in 2010.


DHI Academy Masters Meeting 2013
Achievements - 2013








DHI signs association agreement with Urban Retreat at Harrods and expands to USA, Nepal, Philippines and Afghanistan.

Achievements - 2014







A new PRP protocol was developed and Direct-MPG was introduced with great success.


DHI Global Medical Group strengthens partnerships with public universities in Europe and actively contribute to courses.

Achievements - 2014







DHI receives European and US patents for the new Direct Hair Implantation instruments.

Achievements - 2014










DHI Global Medical Group received EBA national award in customer focus category.

Achievements - 2015