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About us

eFLO is your preferred urology clinic that comprises a team of urology specialist that provide state-of-art urology surgery, care and services.

Our Story

Dr Ngan may have left his affiliation with universities in 1999, but he has not abandoned his passion for education and research. He is mindful that being an academician is a quality and not a title. He continues to practice medicine with an inquisitive mind and constant updates on knowledge, while taking every opportunity to share his knowledge and skill with colleagues, students, and young urologists.

Since 1999, Dr Ngan has been running a busy evidence-based urology service while developing strong programs in education and charity.

In 2008, he established eFLO to include all 3 areas of his work – urology, education, and charity.

In 2022, he started eFLO Urology, admitting Dr Raymond Kan, a young urologist, who shares a common vision.


Our Mission

To provide state-of-art urology care in a pleasant, comfortable environment, with courtesy and attention to individual needs, irrespective of patients’ financial, cultural or religious background, and when necessary, through collaborative integrated healthcare with cross-specialty experts of same beliefs.


Meet Our Team

The urology team at eFLO comprises experienced urologists and friendly, attentive nurses.

Through professional examinations and assessments, supported by advanced medical equipment, we commit to provide you with excellent state-of-art urology treatment and care.

Dr John Ngan

Dr John Ngan

Adult and Pediatric Urology
Founder and Director
Specialist in Urology

Dr Ngan is a urologist with over 40 years of experience, and established his own practice in 1999. He holds admission rights and urology procedure privileges, including lithotripsy, assisted-reproduction, laparoscopic and robotic surgeries, in all private hospitals. He is an Honorary Urology Consultant at the Hong Kong Sanatorium and Hospital. 

Dr Raymond Kan 簡煒文 醫生

Dr Raymond Kan


Dr Kan received his medical degree from the University of Hong Kong, he then completed his urology training at Queen Elizabeth Hospital. He obtained the fellowship in Urology from the College of Surgeons of Hong Kong and the Royal College of Surgeons of Edinburgh, and was awarded the CH Leong Medal & Scholarship in 2016. He was elected distinguished young fellow of the Hong Kong Academy of Medicine in 2017.

中環泌尿外科醫生梁樂希 Dr. Clarence Leung Urologist in Central

Dr Clarence Leung​


Dr Leung was graduated from the Chinese University of Hong Kong and completed his urology fellowship at Kwong Wah Hospital. He received specialized training in Functional Urology, Neuro-urology, Pediatric Urology, Andrology, and Male Infertility through overseas programs. Dr Leung managed various clinics at Kwong Wah Hospital and introduced combined andrology-sex therapy services. His involvement in the Hong Kong Urological Association and collaboration with other specialties highlight his dedication to advancing urology.

Our Clinic

The Water Design

The greenish tone and water flow provides a feeling of nature, depicting a quiet, clear stream flow on a bright sunny day. It moves unceasingly and flows toward a definite direction. To a casual observer, the stream is quiet and simple. At a closer look, it is full of life, energy and activity.

Medicine is part of life. It cannot escape the laws of life. We believe that life is supposed to be quiet and enjoyable. Diseases, ageing, illnesses are but small hurdles to stride. Life may be boring just because we overlook its important details. Though it may seem, life does not go in circles, it takes us to a destination.

A medical clinic is not a business. It provides guidance and support in the life journey.

Water conforms to any shape and takes little to move around. It embraces anything that it meets in a friendly manner. On the other hand, water can pass through any hurdle without any problem.


Medical student attachments with doctors in private practices are a valued resource in their education. We select top students to observe our practice for consecutive periods of not less than 3 months. During their tenure, they have the opportunity to observe the delivery of medicine in real life. We emphasize knowledge in application, interpreting patient complaints, and communication with patients. We hope to show them how to practice with honesty and integrity, and how to treat with passion and excellence. Through this, we believe students will learn the true art of medicine.

We are long-term partners with Enrichment Year Programme, LKS Faculty of Medicine, University of Hong Kong and Global Physician-Leadership Stream, Chinese University of Hong Kong. If there is a student on the day of your visit, we will obtain your consent to allow the student to observe. If, however, you would prefer otherwise, we would be happy to give you more privacy.


Quality assurance, clinical audit and research

We regularly perform clinical audits to identify, assess, correct, and monitor important aspects of patient care, in order to enhance the quality of healthcare we deliver. These results are presented and discussed in peer review meetings. Last year, we completed studies in hypospadias, posterior urethral valves, bladder exstrophy, pyeloplasty, and robot-assisted laparoscopic radical prostatectomy. Results showed that our care has been in line with current international standards.

We frequently review new management algorithms and surgical procedures by attending local and international medical conferences, reviewing medical literature, and meeting with vendors and developers. Prior to adopting any new procedure, we evaluate their safety, efficacy and suitability, and costs and benefits for our patients. Feel free to bring up new procedures and discuss them with us.

We also collaborate with HKUST in bioengineering research, attempting to use artificial intelligence and deep learning to identify prostate cancer.


Hospital affiliation

Hong Kong Sanatorium & Hospital

Address: 2 Village Road, Happy Valley, Hong Kong

Tel: (852) 2572 0211, Fax: (852) 2835 8008

Hong Kong Adventist Hospital – Stubbs Road

Address: 40 Stubbs Road, Hong Kong

Tel: (852) 2574 6211, Fax: (852) 3651 8001

Canossa Hospital (Caritas)

Address: 1 Old Peak Road, Hong Kong
Tel: (852) 2522 2181, Fax: (852) 2840 1986

Matilda International Hospital

Address: 41 Mount Kellett Road, The Peak, Hong Kong
Tel: (852) 2849 0111

St Paul’s Hospital

Address: 2 Eastern Hospital Road, Causeway Bay, Hong Kong
Tel: (852) 2890 6008, Fax: (852) 2895 2956

Gleneagles Hospital Hong Kong

Address: 1 Nam Fung Path, Wong Chuk Hang, Hong Kong
Tel: (852) 2122 2333

St Teresa’s Hospital

Address: 327 Prince Edward Road, Kowloon, Hong Kong
Tel: (852) 2711 9111, Fax: (852) 2711 9779

Hong Kong Baptist Hospital

Address: 222 Waterloo Road, Kowloon, Hong Kong
Tel: (852) 2339 8888, Fax: (852) 2338 5394

Evangel Hospital

Address: 222 Argyle Street, Kowloon, Hong Kong
Tel: (852) 2711 5222

Precious Blood Hospital

Address: 113 Castle Peak Road, Shamshuipo, Kowloon, Hong Kong
Tel: (852) 3971 9900, Fax: (852) 2728 4290

Union Hospital

Address: 18 Fu Kin Street, Tai Wai, Shatin, N.T.
Tel: (852) 2608 3388

CUHK Medical Centre

Address: 9 Chak Cheung Street, Shatin, N.T.
Tel: (852) 3946 6888

Hong Kong Adventist Hospital – Tsuen Wan

Address: 199 Tsuen King Circuit, Tsuen Wan, N.T.
Tel: (852) 2275 6688