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Tim Mercado, RMT

Tim Mercado, RMT

Research Associate

Research Associate Master Student

Tim Mercado, RMT is a registered medical technologist serving as Monitoring and Evaluation Officer for the StITCH Project, supporting data systems, implementation research, and continuous quality improvement for people-centered care. He has 5+ years experience in public health work focusing on HIV and infectious diseases.

He holds a BS in Medical Technology from Saint Louis University and is pursuing an MSc in Epidemiology at UP Manila.

Research and publications

Journal article

Healthcare system readiness to manage viral hepatitis in Viet Nam and the Philippines

Martin Louis Fernandez, Hoang Nguyen, Dang Nguyen, et al.

BMC Health Services Research · 2026

Authors and abstract

Authors: Martin Louis Fernandez, Hoang Nguyen, Dang Nguyen, Bethany Holt, Duong Doan, Manu Gaspar, Geohari Hamoy, Jhaki Mendoza, Timothy Bill Mercado, Daniel Joy Cabauatan, Huyen Nguyen, My Dang, Vy Nguyen, Janus Ong, Joseph Michael Manlutac, Yen Nguyen, Hoa Nguyen, Dung Vu, Jan Philip Florendo, Danica Delima, Mary Cris Rombaoa, Jose Mateo Dela Cruz, Rosanna Buccahan, Hjordis Marushka Celis, Jeanette Lazatin, Pham Nam Thai, Pham Xuan Truong, Tran Khanh Thu, Thuy Pham, David Duong, Todd Pollack

A mixed-methods health facility assessment evaluating the readiness of primary healthcare systems in Viet Nam and the Philippines to deliver hepatitis B and C services, identifying critical gaps in diagnostics, workforce capacity, treatment access, and health financing.

Journal article

Putting people at the center: methods for patient journey mapping of viral hepatitis services across two LMICs in the Asia Pacific

Bethany Holt, Jhaki Mendoza, Hoang Nguyen, et al.

BMC Health Serv. Res. · 2025

Authors and abstract

Authors: Bethany Holt, Jhaki Mendoza, Hoang Nguyen, Duong Doan, Thu Huyen Nguyen, Timothy Bill Mercado, Lam Dam Duy, Martin Fernandez, Manu Gaspar, Geohari Hamoy, Bao Ngoc Le, Boon-Leong Neo, Vy Nguyen, Thuy Pham, Janus Ong, Todd M Pollack, Jae-Ann Sumalo, Pham Thai, David B Duong

BACKGROUND: To ensure that health services are high-quality, trusted and used by the population, their design and improvement should start from the perspective of what matters to people. Patient journey mapping (PJM) is one research method that centers the experiences of individuals living with health conditions and follows their pathways through care and recovery. This paper describes a novel, qualitative PJM methodology used in Vietnam and the Philippines to inform the co-design of a people-centered viral hepatitis screening, care and treatment pathway for individuals living with chronic hepatitis, which is a significant public health concern in the Asia-Pacific region. METHODS: Data collection involved in-depth interviews with a purposive sample of 63 people living with hepatitis (demand-side) and focus group discussions with healthcare providers working in the same geographical areas (supply-side). Rapid deductive qualitative analysis was used to identify typical journeys, and related barriers and enablers. The methodology was implemented over 8 weeks, adapting the Consolidated Criteria for Reporting Qualitative Research (COREQ). RESULTS: This paper demonstrates how a PJM methodology that incorporates patient and HCP perspectives can be feasibly implemented in two LMIC contexts, while fulfilling many of the criteria identified by the COREQ guidelines. Sharing such methods and associated instruments may help to enable broader uptake and application in other LMIC settings, providing health systems practitioners with a critical tool to identify and overcome barriers in and promote the delivery of people-centered health services globally. CONCLUSION: Despite limited uptake, especially in resource-limited contexts and at the primary healthcare level, PJM is a novel research method with the potential to make promising contributions to people-centered health service design.

Journal article

Stigma among primary care providers: characterizing attitudes and behaviors in the care of people with chronic hepatitis in the Philippines

Naeema Hopkins-Kotb, Jhaki Mendoza, Manu Gaspar, et al.

BMC Prim. Care · 2025

Authors and abstract

Authors: Naeema Hopkins-Kotb, Jhaki Mendoza, Manu Gaspar, Martin Fernandez, Jae-Ann Sumalo, Timothy Mercado, Jovein Alcantara, Joshua Bartolome, Diana Rose de Silva, Janus P Ong, Todd M Pollack, David B Duong, Bethany Holt

BACKGROUND: Stigma is a key barrier to compassionate primary health care delivery and people-centered care (PCC), but is understudied among primary care providers (PCPs). Hepatitis B and C have a significant burden of disease in the Philippines, where there is limited awareness of and access to screening and treatment. Patient-reported stigma has been identified as a significant barrier to hepatitis care in the Philippines, but PCP stigma-related attitudes and behaviors have not been explored in this context. METHODS: In this study, we assessed primary PCP-reported stigma-related attitudes and behaviors toward patients with hepatitis B and C. We surveyed primary PCPs in Tarlac, Philippines working within a network of healthcare facilities that have been part of an initiative to decentralize hepatitis care to the primary care level and prioritize PCC. RESULTS: We found that PCPs' self-reported attitudes toward patients with hepatitis B and C reflect a strong sense of responsibility to provide care, and comfort with sensitive history-taking, but also pervasive attitudes of pity and blame. PCPs' self-reported behaviors showed commitment to providing equal care, but variation in infection control practices suggesting misconceptions about transmission risk. CONCLUSIONS: Our results provide essential insight into PCPs' stigma-related attitudes and behaviors that will serve as a baseline for future comparison with patient-reported experiences. These findings underscore the critical role of primary care in addressing stigma and improving hepatitis care in the Philippines, highlighting the importance of training, resource allocation, and people-centered care strategies.

Journal article

Barriers and enablers to people-centred viral hepatitis care in Vietnam and the Philippines: Results of a patient journey mapping study

Bethany Holt, Jhaki Mendoza, Hoang Nguyen, et al.

J. Viral Hepat. · 2024

Authors and abstract

Authors: Bethany Holt, Jhaki Mendoza, Hoang Nguyen, Duong Doan, Vy H Nguyen, Daniel Joy Cabauatan, Lam Dam Duy, Martin Fernandez, Manu Gaspar, Geohari Hamoy, Joseph Michael D Manlutac, Sinit Mehtsun, Timothy Bill Mercado, Boon-Leong Neo, Bao Ngoc Le, Hoa Nguyen, Huyen Thu Nguyen, Yen Nguyen, Thuy Pham, Todd Pollack, Mary Cris Rombaoa, Pham Thai, Tran Khanh Thu, Pham Xuan Truong, Dung Vu, Janus Ong, David Duong

In Vietnam and the Philippines, viral hepatitis is the leading cause of cirrhosis and liver cancer. This study aims to understand the barriers and enablers of people receiving care for hepatitis B and C to support both countries' efforts to eliminate viral hepatitis as a public health threat by 2030. Retrospective, semi-structured interviews were conducted with a purposive, quota-based sample of 63 people living with hepatitis B or C in one province of Vietnam and one region of the Philippines. A rapid deductive approach to thematic analysis produced key findings among the three phases of care: (1) pre-awareness and testing, (2) linkage and treatment initiation and (3) ongoing treatment and recovery. The research found that participants followed five typical journeys, from a variety of entry points. Barriers during the pre-awareness and testing phase included limited awareness about hepatitis and its management, stigma and psychological impacts. Enablers included being familiar with the health system and/or patients benefiting from social connections within the health systems. During the linkage and treatment initiation phase, barriers included difficult physical access, complex navigation and inadequate counselling. In this phase, family support emerged as a critical enabler. During the ongoing treatment and recovery phase, the cost of care and socially and culturally informed perceptions of the disease and medication use were both barriers and enablers. Exploring peoples' journeys with hepatitis B and C in Vietnam and the Philippines revealed many similarities despite the different cultural and health system contexts. Insights from this study may help generate a contextualized, people-centred evidence base to inform the design and improvement of primary care services for hepatitis in both research sites.

Journal article

Embedding viral hepatitis into primary healthcare: results of a strategic landscape analysis in Vietnam and the Philippines

Bethany Holt, Martin Fernandez, Dang Nguyen, et al.

Lancet Reg. Health West. Pac. · 2024

Authors and abstract

Authors: Bethany Holt, Martin Fernandez, Dang Nguyen, Danica Delima, Lam Dam Duy, Manu Gaspar, Geohari Hamoy, Bao Ngoc Le, Jan Llevado, Joseph Michael D Manlutac, Jhaki Mendoza, Timothy Mercado, Hoang Nguyen, Huyen Thu Nguyen, Janus Ong, Mary Cris Rombaoa, Jan Florendo, Jose Mateo Dela Cruz, Thuy Pham, Pham Nam Thai, Pham Xuan Truong, Todd Pollack, David Duong

Chronic viral hepatitis is a significant public health concern in the Western Pacific, including in Vietnam and the Philippines. To accelerate progress toward meeting the 2030 elimination goals, the World Health Organization (WHO) encourages countries to adopt an integrated, people-centered health sector response to hepatitis, grounded in Primary Health Care (PHC). A review of the academic and grey literature, along with policy documents, was conducted to describe the national health system and PHC response to hepatitis B and C in Vietnam and the Philippines. Information was analyzed against the four strategic levers of the WHO Operational Framework for PHC to identify challenges and opportunities. The findings suggest that both countries have relatively robust policy frameworks, with some room for improvement. Vietnam may have stronger political commitment and funding than the Philippines, while the Philippines appears to be stronger in community engagement. Both countries share challenges and opportunities for learning to actualize viral hepatitis elimination utilizing a PHC approach.

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