He looked at a $1-trillion market and decided the most undervalued asset was the local agent your grandmother already trusts.
Cofounder, CEO, and chief defender of the independent broker. The smile of a man who read the room and bet the other way.
Most healthtech founders, handed the Medicare market, build a call center. Or a private-equity roll-up. Or an app that promises to make the friendly local agent obsolete. James Jiang looked at the same opportunity and did the unfashionable thing: he doubled down on the agent.
Spark, the company he cofounded in 2020 and runs as CEO, is built on a single stubborn idea - that the independent broker who sits at a kitchen table in a small town is not a relic to be automated away, but the future of how Americans navigate retirement healthcare. Everyone else in the room was selling efficiency. Jiang was selling the agent's superpower back to the agent.
The bet has a number attached to it now. In 2025 Spark processed roughly 250,000 enrollments, supported 10,000 ready-to-sell agents, and grew its team to about 130 people. Two years earlier the company had raised a $25 million Series B at a 4x valuation increase over its Series A. Somewhere between the kitchen table and the cap table, the contrarian turned out to be right.
What makes the thesis interesting is how specific it is. Jiang does not romanticize the agent in the abstract. He points to the exact work the agent does and that the spreadsheets miss: helping a client through a low-income subsidy application, sorting out a Medicaid certification, fighting a surprise medical bill, finding a doctor who is actually in-network. These are relationships that last a decade or longer. A call center churns through them in eight minutes. Jiang built a company around the gap between those two numbers.
Jiang did not arrive at this from the outside. He started his career as a global technology investor, the kind of person whose job was to look at companies and decide which ones would win. That training shows up in how he talks about Spark - in cohort retention, daily active brokers, valuation step-ups. He sees the business the way an investor would underwrite it.
Then he crossed the table. He cofounded Roster Health, a company delivering value-based in-home care to high-need Medicare beneficiaries - the patients who are hardest to reach and easiest for the system to drop. It was there, close to the people Medicare is supposed to serve, that the Spark thesis likely took shape. You do not learn to trust the local agent from a pitch deck. You learn it from watching who actually shows up for a 78-year-old with a stack of confusing letters.
By the time Spark launched with $3.6 million in seed funding led by Primary Venture Partners, Jiang had been an investor in the system, a builder inside it, and a witness to its gaps. The company was not a guess. It was a conclusion.
Spark's marketing talks about empowering brokers, but the actual product is the unglamorous machinery of the Medicare business: contracting and licensing, compliance, CMS-compliant marketing assets, lead management, retention campaigns, agent dashboards, and the back-office support that lets a solo broker operate like an agency. It is plumbing. Jiang treats the plumbing as the point.
The numbers suggest the brokers agree. Spark has posted a 91 NPS with more than 60% of its brokers logging in daily and a 96% client satisfaction rating. In enterprise software, getting users to log in daily is the whole game. Getting insurance brokers to do it - people who were perfectly happy with a binder and a phone - is a small miracle. Jiang's company quietly pulled it off by being useful in the boring, repeated, high-stakes moments that make or break an agent's week.
The 2024 valuation step-up did not come from a story. It came from a curve. In 2022 alone, Spark's agent partners grew sevenfold, from 190 to 1,300, while Medicare enrollments through the platform jumped tenfold, from 2,000 to 20,000 in twelve months. The company served more than 50,000 Medicare beneficiaries, expanded to 40 full-time employees, and operated across 23-plus markets. For a business built on the supposedly outdated local agent, those are not the numbers of a fading model.
By the time of the Series B, Spark had partnered with 3,400-plus brokers who had enrolled over 60,000 beneficiaries, with its largest partners posting 140% enrollment growth year over year and individual agents growing enrollments by 90%. Jiang frames it less as Spark winning and more as agents winning when they finally have the tools the big call centers always had. The platform doubled enrollment volume year over year - the kind of compounding that turns a contrarian thesis into a category.
He has also surrounded the thesis with people who know what scale looks like. Sam Wiener joined as Executive Vice President of Growth, bringing the experience of scaling Oscar Health to more than a million members with 10,000-plus broker partners. It is a telling hire: Jiang did not recruit someone to reinvent distribution, he recruited someone who already knew that brokers are how Medicare actually reaches people.
Medicare is not a quiet corner of healthcare. It is one of the largest and most heavily regulated markets in the country, reshaped every year by CMS rules that can rewrite an agent's entire playbook overnight. Jiang treats that volatility as the moat. When the rules change, the solo broker with a binder is exposed; the broker plugged into a platform that ships CMS-compliant marketing assets, compliance tooling, and real-time client visibility is suddenly the most prepared person in the market. Complexity, in his framing, is not the enemy of the local agent - it is their advantage, as long as someone hands them the right software.
"These numbers show what agents can accomplish when backed by the best technology and services in the industry."
A former global technology investor, Jiang talks about Spark in the language of cohort retention and valuation step-ups. He learned to spot a winning company before he set out to make one.
Low-income subsidy applications. Medicaid certifications. Surprise bills. In-network doctors. Jiang built a company around the unglamorous favors a local agent does, often for a decade per client.
Contracting, licensing, compliance, retention. Spark sells the back office, not the spotlight - and got insurance brokers to log in daily, which is its own kind of magic.
"To help the industry's top brokers build the insurance business of their dreams."
He sat on the investor side of the table first - the rare founder who knows exactly how his own deck would get torn apart.
His thesis is deliberately out of step with healthtech orthodoxy: bet on the local human agent, not the centralized call center.
Spark's name is about empowering people. Its real product is the unglamorous machinery of Medicare - contracting, compliance, retention.
Jiang has signaled that 2026 will be a pivotal year for Spark's brokers, with Medicare plans undergoing significant restructuring. His read: the agents who pair healthcare expertise with tech-enabled operations will pull away from the ones who do not. It is the same bet he made in 2020, just with more chips on the table.
Recent platform work points the same direction - AI-powered workflows that flag plan disruptions and churn risk before they cost an agent a client, real-time visibility into client status, and dedicated support that hands an agent back their most scarce resource: time. The plumbing keeps getting smarter. The thesis stays the same.
For a man who started by deciding which companies would win, the most interesting case study turned out to be the one he built himself - and the underdog he keeps betting on is the person at the kitchen table.