1 Medical Clinics is a Singapore family healthcare group dedicated to providing compassionate, comprehensive, and personalised care, founded by Dr Zhang Hao Tian, who established his own primary healthcare practice in 2021 after a career spanning Tan Tock Seng Hospital, the National University Hospital's Accident & Emergency Department, and service as a Battalion and Brigade medical officer with the Singapore Armed Forces.
The clinic group operates three locations across Singapore: 1 Bishan Medical (opened April 2021), 1 Aljunied Medical (opened August 2022), and 1 Toa Payoh Medical (opened July 2023). Services span vaccinations, health screening, chronic disease management, weight management, minor surgery and wound care, paediatric care, housecall services, skin and hair treatment, men's and women's health, and cancer screening, alongside Lasting Power of Attorney and Advanced Medical Directive support.
1 Medical Clinics are approved institutions under several government healthcare programmes, including CHAS, Merdeka Generation, Pioneer Generation, Medisave, and MBS@Gov.
1 Medical Clinics describes itself as "Your Healthcare Partner," dedicated to providing compassionate, comprehensive, and personalised healthcare to individuals and families across three Singapore neighbourhoods. The clinic chain was founded by Dr Zhang Hao Tian, who established his own primary healthcare practice in 2021 and now owns and operates the group.
Dr Zhang graduated with a Bachelor in Medicine and Surgery from the National University of Singapore's Yong Loo Lin School of Medicine in 2013. He began his medical career at Tan Tock Seng Hospital, gaining experience across General Medicine, General Surgery, Orthopaedic Surgery, and Urology, before moving to the National University Hospital's Accident & Emergency Department, where he developed expertise in emergency care and rapid decision-making.
Alongside his hospital work, Dr Zhang served as a Battalion and Brigade medical officer in the Singapore Armed Forces' Army Medical Services, later becoming a Course Commander and Instructor from 2017 to 2019, training future medical professionals. He was also appointed a Formation Medical Officer in the SAF Armour Formation and received awards for his contributions. He holds a graduate diploma in Palliative Medicine (2020), plus certifications in Andrology, Advanced Cardiac Life Support, and Advanced Trauma Life Support.
1 Medical's services span the full spectrum of general practice and beyond. This includes vaccinations (adult, childhood, COVID-19, and pre-travel), Lasting Power of Attorney and Advanced Medical Directive support, and affordable, customisable health screening packages recommended on a yearly basis.
The clinics also handle check-ups and permits — pre-employment check-ups, student pass check-ups, domestic worker 6-monthly check-ups (6ME), work permit check-ups, and driving licence and insurance underwriting. For ongoing health needs, the team manages acute conditions like coughs, flu, and food poisoning, as well as chronic conditions such as diabetes, hypertension, and hyperlipidemia, alongside weight management support that includes tailored advice, medication, and supplementation.
On the procedural side, 1 Medical offers minor surgery and wound care — removal of lumps and bumps, incision and drainage, wound cleaning and suturing, histofreezer treatment for warts, and dressing changes. Paediatric care is available for babies and children, including childhood vaccinations under the National Childhood Immunisation Schedule (NCIS).
For patients who can't make it to a clinic, 1 Medical offers housecall services, bringing nursing care, vaccinations, and health screenings directly to patients' homes. The clinics also provide a space to discuss skin and hair concerns such as hair loss, baldness, skin allergies, and acne dermatitis, as well as men's and women's health matters including erectile dysfunction and prostate disorders. Cancer screening is also available, covering a full range of tumour marker tests and Screen for Life (SFL) screening for eligible Singaporeans.
1 Medical Clinics are approved institutions under several government healthcare programmes, including CHAS (Community Health Assist Scheme), the Merdeka Generation and Pioneer Generation schemes, Medisave, and MBS@Gov — helping eligible patients access subsidised care.
1 Bishan Medical, at 283 Bishan Street 22, #01-191, Singapore 570283, was the group's first clinic, opening in April 2021, and is open daily from 8am to 2pm and 6pm to 10pm (tel: 6456 1600). 1 Aljunied Medical, at 389 Upper Aljunied Road, Singapore 367874, opened in August 2022, and operates Monday to Thursday 8am–2pm and 6pm–9pm, Friday and Sunday 8am–2pm, and is closed on Saturdays (tel: 6286 1923). 1 Toa Payoh Medical, at 4 Lorong 7 Toa Payoh, #01-115, Singapore 310004, opened in July 2023, and is open daily from 9am to 2pm, also closed on Saturdays (tel: 6251 2256).
Beyond the core GP services, 1 Medical also runs an online pharmacy, physiotherapy and wellness services, and corporate partnerships for businesses looking to support employee healthcare needs.