I’m the founder and president of Cornerstone Diagnostic Consulting. As a financial strategy advisor and AI-driven diagnostic expert, I help small business owners uncover inefficiencies and unlock hidden profit within their operations. With a background rooted in mathematics and finance, I specialize in precision financial analysis that identifies profit leaks, strengthens cash flow, and reduces unnecessary costs. Through my Profit Leak Diagnostic and practical, technology-backed approach, I provide clear, actionable insights that restore financial clarity and drive measurable profitability.
Jonathan Ontiveros
Jonathan graduated from UC Irvine with degrees in economics and political science. He has worked as a residential real estate appraiser for 2 years and a commercial appraiser trainee for 6 years. He has taken various real estate courses in residential and commercial real estate. Also, Jonathan has some experience in radio and as a public affairs talk show host.
Why I Built Cornerstone
I spent over 20 years in corporate finance watching structured analysis drive profits, while small businesses struggled without similar clarity, so I created a diagnostic-first consultancy focused on practical, owner-friendly insight.
My Diagnostic Method
My Assess, Adjust, Accelerate framework combines AI-driven financial scans with hands-on review, then converts findings into a clear, prioritized action plan that tightens costs, strengthens cash flow, and supports smarter tax decisions.
How I Work With You
I keep the process structured, safe, and straightforward, using plain language, virtual meetings, and custom reports so you always know what your numbers mean, what to change first, and how each step improves profitability.
Measured Results You Can Trust
Every engagement targets clearer numbers, stronger cash flow, and profitability improvements you can actually measure.
