In the beginning, PHS clientele was composed only of corporate accounts. The arrangement was for PHS to provide medical services for these companies' employees. Services offered then were limited to out-patient type like consultations, annual medical examinations, pre-employment medical examinations, limited laboratory and x-ray procedures.

As months passed, the companies started clamoring for more PHS services. The founding doctors, realizing the viability of their endeavor, thought that the time was ripe to put up a Health Maintenance Organization (HMO), a concept that was relatively new in the local market. This move was envisioned to benefit more people, a welcome alternative for a great majority of people who could otherwise not enjoy high quality services without having to worry about the immediate expenses involved.

PHS doctors, however, were not naive to the reality that embarking on an HMO scheme would entail a lot of manpower and other resources. Three considerations immediately came to mind: first was the source of badly needed additional capital; second, the needed management skills and adequate administrative support; and third, a dynamic marketing force to push a new brand of service in the market.

At first, the task of searching for a partner to back PHS seemed formidable. But the answer was not that elusive. The doctors were soon in agreement that there was one institution which could effectively get their plans off the ground - the Philippine American Life Insurance Company (Philamlife). Negotiation for a partnership started immediately. PHILAMCARE HEALTH SYSTEMS, INC. (PHILAMCARE) thus came to be, with the objective of meeting the public's health care needs at affordable costs without sacrificing the quality of service. In time, PhilamCare tapped the expertise more than 3,500 specialists, most of whom are diplomats in their respective fields. It has also affiliated with 22 of the better equipped hospitals in Metro Manila and 123 hospitals in key cities nationwide.

PhilamCare also boasts of its partnership with UnitedHealthCare (UHC) a leading managed care organization in the United States. PhilamCare, essentially, is a multi-service Health Maintenance Organization (HMO) with the primary aim of providing preventive and curative health care services as well as hospitalization benefits at an affordable price to Filipinos of all income classes through its wide range of product lines.

PhilamCare belongs to the Philippine`s Top 1000 Corporations, with a membership of over 306,000 individuals, a roster of over 750 corporate clients, and a nationwide network of premier hospitals in Metro Manila and key urban centers. Lately, its reach has extended overseas, wherever Filipino communities require its array of diversified health care services for their dependents left in the Philippines.