Tahir, who goes by a single name, is the founder and chairman of Mayapada Group. The Jakarta-based conglomerate spans healthcare, banking, property and media. Mayapada Hospitals has seven locations across Indonesia and more than 860 beds. It reported revenue of 3.1 trillion rupiah ($199 million) in 2024.
The majority of Tahir's fortune is derived from his stake in Sejahteraraya Anugrahjaya, which is also known as Mayapada Hospital. The company has seven locations across Indonesia and operates more than 860 beds, according to its 2024 annual report.
He owns 62% of Mayapada Hospital directly, with two children and through vehicles Surya Cipta and Wing Harvest, according to a September 2025 filing. He also owns 71% of Bank Mayapada, 86% of Maha Properti Indonesia and 12% of Sona Topas Tourism Industry, according to the companies' shareholder reports as of August 2025. These are units under Tahir's Mayapada Group. The stakes held by his children are credited to Tahir to reflect his status as the group's founder.
Tahir also owns 89% of Singapore-listed property investment company MYP, according to its 2024 annual report. He owns 20% of Sompo Insurance Indonesia and 16% of Zurich Topas Life. These two insurance companies are valued using reported financial results and the average price-to-book value multiple of four publicly traded peers: Sinar Mas Multiartha Tbk PT, Capital Financial Indonesia Tbk PT, MSIG Life Insurance Indonesia Tbk PT and Panin Financial Tbk PT.
Other businesses under the Mayapada Group are not valued in this analysis as their ownership and financials are unknown. A liability is included based on an analysis of dividend, stock transactions, taxes and market performance.
Lucia Astrini, a spokesperson for Mayapada Hospital, didn't respond to a request for comment on the net worth calculation.
Tahir was born on March 26, 1952 in Surabaya, a city in East Java. His father supported the family by making pedicabs and his mother painted them.
Tahir's childhood dream was to become a doctor. He entered a university to study medicine but had to drop out of school when his father fell sick.
At the age of 20, he received a scholarship to study business at Nanyang University in Singapore. During his studies, he sourced clothing and bicycles from Singapore and resold them in Indonesia. This became the beginning of his garment business.
Tahir began studying finance at Golden Gates University's campus in Indonesia at the age of 35. He later expanded his business from garments to banking, car dealerships, media and healthcare.
Bank Mayapada, a unit within the Mayapada Group, was listed in the Indonesia stock exchange in August 1997. It survived the Asia financial crisis months later as it didn't take loans from foreign banks.
"Looking back, I have no regrets," wrote Tahir in an opinion piece published on Project Syndicate. "Indeed, I know that I have been incredibly blessed."