Expert Team
A Father-Daughter Duo Team
At Guan Ann Chan, we are proud to offer a unique blend of traditional Chinese medicine and modern healthcare, led by our dynamic father-daughter duo team. Each with their own unique experience and expertise, both of them work hand-in-hand to provide the best possible care and solution to address each customer and patience’s needs. Our Traditional Chinese Medicine (TCM) physicians are certified and registered by the TCM Practitioners Board (TCMPB), which is recognized and accredited by the Ministry of Health.
Physician Ong Chin Tiong
Physician Ong Chin Tiong is a registered Traditional Chinese Medicine (TCM) practitioner with over 40 years of clinical experience.
He specializes in internal medicine (内科), dermatology (外科), gynecology (妇科), and pediatric care (儿科). His vast experience treating patients of all ages has earned him the reputation of a trusted clinician throughout Singapore.
At Physician Ong’s practice, every patient is treated with individualized care and attention. Through meticulous diagnosis and a deep understanding of TCM principles, he identifies the root causes of ailments and formulates comprehensive long-term treatment plans for his patients. This is further exemplified by Physician Ong’s ability to formulate concoctions to treat post-COVID-19 symptons, such as fatigue, breathlessness, and persistent cough, and bring his patients back to full health. Physician Ong’s versatility and keen ability to correctly find the right treatment embodies his commitment to helping others, regardless of circumstance.
Additionally, his effective treatment of dermatological conditions — including shingles, eczema, psoriasis, and hives — has further solidified his reputation as an expert in his field in Singapore. The efficacy of his treatments and the continuous growth of his patient base are a testament to the trust he has garnered across the community.
Background:
- Registered TCM Physician with the Ministry of Health, Singapore
- Advanced Diploma in Traditional Chinese Medicine (Singapore College of TCM)
- Member of the Singapore Chinese Physician’s Association
- Member of the Hong Kah Shop Proprietors’ Association
Expertise:
- Chronic cough & Flu
- Women’s Health
- Men’s Health
- Internal medicine
- Gastrointestinal disorder
- Cardiovascular conditions




Physician Mevis Ong
Inspired by her father’s profound passion for Traditional Chinese Medicine (TCM), Physician Mevis Ong set out on a path to become a registered TCM practitioner. From a young age, her deep commitment to healthcare and dedication to serving her community have been the driving forces behind her journey, fueling her determination to make a meaningful impact in the lives of others through the healing practices of TCM.
SP’s Nutrition, Health, and Wellness course provided the foundational knowledge that fueled her passion for healthcare. Building on this strong foundation, she pursued a degree in Life Sciences at NUS, which further enhanced her expertise. Her unwavering dedication to TCM led her to earn a specialized TCM degree from both the Singapore College of TCM and Guangzhou University of Chinese Medicine, allowing her to seamlessly integrate the principles of Western and Eastern medical practices.
Her clinical practice specializes in treating chronic pain and sports injuries, with a particular focus on lower back pain, skin conditions, digestive disorders, insomnia, and stress management. Through her distinctive needling techniques and personalized treatment plans, Mevis aims to empower her patients to achieve healing and balance, both physically and emotionally. She firmly believes in collaborating closely with each individual to uncover their health goals and identify the root causes of their conditions.
Dedicated to lifelong learning and professional development, Mevis continues to refine her skills under the mentorship of leading experts in the field. Her commitment to growth ensures that her patients receive the most advanced and effective care, seamlessly blending traditional practices with modern innovations to promote overall wellness and lasting health.
Background:
- Singapore MOH Registered TCM Physician
- Bachelor degree in Life sciences (National University of Singapore)
- Bachelor degree in TCM (Guangzhou University of Chinese Medicine)
- Advanced Diploma in TCM (Singapore College of TCM)
- Diploma in Nutrition Health and Wellness (Singapore Polytechnic)
- Member of Singapore Physicians’ Association
Additional trainings:
- Acuregen cosmetic facial acupuncture & advanced collagen induction techniques
Expertise:
- Chronic pains
- Sports Injuries
- Musculoskeletal disorders
- Dermatology
- Skin conditions
- Stress Relief and Management
- Insomnia