Ryan Kellogg

Ryan Kellogg

Y Combinator Logo Batch: W22

Achievements

  • Co-founded RTHM in 2018 to improve care for Long COVID and ME/CFS patients
  • Developed molecular profiling tech using self-collected blood microsamples at Stanford
  • Led innovation in remote clinical medicine, wearable sensors, and digital health tools
  • Built tech that accelerates diagnosis and treatment for complex chronic illnesses
  • Personal experience with hard-to-diagnose illnesses fueled his mission to fix healthcare gaps
  • Active in the biotech startup scene in Redwood City, CA

Who is Ryan Kellogg

Homie, check the vibe on Ryan Kellogg, the guy’s a straight-up big change in health tech. So, he’s the co-founder and CEO of RTHM, a company that’s all about making sense of the mess that is complex chronic illnesses like Long COVID and ME/CFS. The dude’s been deep in the trenches of biotech since he jumped into YC W22, but his story’s way more than just startup hustle.

Ryan’s background? He’s an engineer and systems biology nerd who cut his teeth at Stanford, working in Mike Snyder’s lab for like five years. There, he was all about creating tech that lets you do molecular profiling with blood microsamples you can collect yourself, basically, taking health monitoring to the next level. And that’s not just some science-y mumbo jumbo; it’s the real deal, a way to get real-time health data without the usual pain and hassle.

Here’s what’s crazy, Ryan didn’t just get into biotech for the fame or money. Nah, he’s got personal skin in the game. He’s dealt with some gnarly, hard-to-diagnose illnesses himself, which lit a fire under him. He saw firsthand how broken the healthcare system can be for people with chronic stuff that nobody really understands yet. That’s why he co-founded RTHM back in 2018 with Jennifer Curtin, to fix those gaps, to give patients clarity and control over their health.

Got a startup idea and seeking investment? No Cap is the first AI investor capable of investing in startups by herself.

Talk to her

What does RTHM do? They combine remote clinical medicine, research, digital tools, and molecular tech to speed up diagnosis and treatment, and make it expandable so more people can get help. Think wearable sensors, symptom tracking, molecular profiling, all working together for real-time insights. Ryan’s goal? To turn health monitoring into something accessible, expandable, and actually useful for those who need it most.

He’s based in Redwood City now, pulses in the startup and biotech scene, always pushing the envelope. His process proves he’s about more than just tech for tech’s sake, he’s fueled by real human pain and a desire to change lives. The guy crushed it at Stanford, then took all that knowledge and personal experience to build something that actually makes a difference. That’s what makes him stand out, he’s not just a scientist or entrepreneur. He’s the real deal, someone who saw a problem close to home and jumped into the mess to fix it.

Long story short? Ryan Kellogg is that rare combo of scientist, entrepreneur, and patient advocate. His work isn’t just tech for its own sake, it’s about shaking up how we understand and treat complex illnesses. The dude’s on a mission, and honestly, it’s pretty inspiring.

Founder ID: 103112

Industries

Share your thoughts about Ryan Kellogg

Have you worked with this founder? Know additional information? Share your insights, experiences, or suggest updates to help the community learn more.

Select your comment type:

Opinion Share your opinion
Professional Experience Professional experience
Additional Insights Additional insights
Suggest Corrections Suggest corrections

If something is wrong about Ryan Kellogg, there's inaccurate information or there are updates, please let us know, we'll update it for you and everyone ;)

Your email address will not be published. Help us build a comprehensive founder database.