On Lok names Claire Tamo chief financial officer

On Lok has appointed veteran healthcare finance executive Claire Tamo as chief financial officer to help guide financial strategy as the San Francisco nonprofit looks to expand its reach and mission. Tamo joins with more than 30 years of experience across major health systems and payers.

Why it matters: - On Lok is adding a senior finance leader as the nonprofit works to sustain its operations and widen its impact on older adults across the Bay Area. - The CFO role is central to funding growth, technology investment and long-term organizational stability.

What happened: - On Lok announced the appointment of Claire Tamo as chief financial officer. - Tamo brings more than 30 years of healthcare finance, operations and executive leadership experience. - On Lok CEO Grace Li said Tamo’s leadership will support thoughtful investments in people, technology and innovation. - Tamo said she is honored to join On Lok and cited the organization’s 55-year legacy and community relationships.

The details: - Tamo most recently served as CFO for Providence Health & Services’ Northern California Service Area. - In that role, Tamo led finance across a six-hospital region in Sonoma, Humboldt and Napa counties. - Tamo has also held executive roles with Pacific Partners Management Services, Altais/Blue Shield of California, Kaiser Permanente, Stanford Health Care and Sutter Health. - Her background includes financial strategy, healthcare operations, value-based contracting, organizational growth, and mergers, acquisitions and integrations. - Tamo earned a Bachelor of Science in Business Administration with an emphasis in Accounting from California State University, Fresno. - Tamo also completed executive leadership and healthcare development programs through Harvard Business School, Stanford Hospital & Clinics and Sutter Health. - On Lok was founded in 1971 and is headquartered in San Francisco. - The nonprofit serves more than 8,000 Bay Area older adults across three counties. - On Lok originated and continues to operate the Program of All-Inclusive Care for the Elderly, known as PACE. - PACE combines healthcare and social support so older adults can live in their homes and communities. - On Lok also offers community-based programs focused on wellness, social connection, care coordination, nutrition and other aging-related needs. - On Lok 30th Street Senior Center is the largest multipurpose senior center in San Francisco. - In 2025, the On Lok Mission Nutrition Program served more than 355,900 community and home-delivered meals. - More information is available on On Lok’s website.

Between the lines: - The hire signals that On Lok is prioritizing financial discipline as it balances service delivery, growth and mission-driven expansion. - Tamo’s background in large healthcare systems and value-based care suggests On Lok wants experience navigating complex, resource-intensive operations.

What's next: - Tamo will oversee On Lok’s financial strategy and operations. - The appointment is positioned to support the nonprofit’s continued mission to improve aging support for older adults. - On Lok is likely to lean on finance leadership as it evaluates future investments in programs, infrastructure and service reach.

The bottom line: - On Lok is betting on an experienced healthcare finance executive to help strengthen the organization’s foundation and extend its community impact.