MHS, ManHo Humanitarian Services a departmental function of Fourthway ManHo Center established to realize a vision and initiative conceived by Professor Sir Dr. Tan Man-Ho for a Modus Operandus to effectively implement humanitarian projects in South East Asia and the Oceania to cater for the needs of the poor and the less fortunate individuals or existing humanitarian organizations that provide such humanitarian services. The function was setup in July 23, 2008 under the guidance of Dr. Tan Man-Ho.  Prof. Dr. Tan is registered and designated as a Doctor of Humanitarian Service (Reg. No. WDHS/2949) and appointed Assembly Member of the World Organization of Natural Medicine (WONM) whose WONM-NORTH AMERICAN OFFICE is Scarborough, Ontario, Canada. He is also a Doctor Member of the Institute of Professional Financial Managers, UK. (Reg. No. 30594) and a specialist in project financing. The World Organization of Natural Medicine (WONM) is established as per World Health Organization Alma Ata 1978 Declaration, and awarded International Accreditation and Recognition by Parlement Mondial, under International Law Status Recognized by Vienna Convention 1961 and 1963. Professor Dr. Tan is active in humanitarian project planning, organizing and delivery activities.

On January 15, 2011 he was officially appointed by His Majesty Rukirabasaija Agutamba Solomon Gafabusa Iguru I of the Kingdom of Bunyoro-Kitara, Uganda Republic as a Representative to Malaysia, and subsequently a certified member of the Association of the Representatives of the Kingdom of Bunyoro-Kitara worldwide (ARKBK) CLBG.

In February 11, 2011, he received The US President's Volunteer Service Award from the White House, Washington, USA and a congratulatory letter from President Barack Obama.