The Doctor in Your Pocket: How Alagappan Built AI's $25M Answer

What if the reason you can't get a doctor's appointment isn't because there aren't enough doctors, but because we're fundamentally thinking about healthcare delivery all wrong?

Muthu Alagappan knows this frustration intimately. As both a Stanford-trained physician and AI researcher, he's experienced the crushing limitations of traditional medicine firsthand - sitting across from patients knowing he could help them better if only he had perfect memory, infinite time, and access to every medical journal ever written.

Now, as founder and CEO of Counsel Health, he's building what many patients describe as "having a doctor in their pocket" - an AI-enabled virtual care platform that just raised $25 million to 10x the world's clinical capacity. In this interview, he reveals how his medical training shaped his approach to startup prioritization, why most healthcare AI is solving the wrong problem, and his bold vision for a future where primary care doctors might seem as antiquated as house calls.

Muthu Alagappan: My name is Muthu Alagappan. I'm a physician by training, but spent the early part of my career as an AI researcher at Stanford and have spent the last many years building health technology companies. I'm the founder and CEO at Counsel Health.

Counsel Health is an AI enabled virtual care company. We're redefining virtual care for the modern era, and our hope is that we multiply the world's clinical capacity by creating perfect doctors to deliver the highest quality care to the next 10 billion people, what many patients described to us as feeling like they have a doctor in their pocket.

We're really excited to announce our $25 million Series A co-led by Andreessen Horowitz, A16Z and GV.

Growing up I had a speech impediment where I couldn't say the letter R and I distinctly remember sitting in class and hoping the teacher wouldn't call on me to read out loud the sections, and I actually remember counting the number of R's in a given sentence to see which sentence I should volunteer to read to avoid being embarrassed.

Later in my life did a lot of public speaking and speech and debate and to me that was mostly a form of building conviction in a growth mindset and the idea that just because something is broken or it doesn't work or isn't the way you want it doesn't mean that it can't be solved and in a way that personal lesson of going from something becoming an impediment to eventually being a strength.

Muthu Alagappan: So I grew up in Houston, which is the home to the world's largest medical center, another place with some of the best cancer hospitals, teaching hospitals, medical schools, and when you grow up in that environment and you still see cracks in the foundation, you still see misdiagnosis, challenges with access, wait times, diagnostic errors, you start to realize that even the best that we've ever created, the best medical centers, the best hospitals, the best doctors are still not quite at either the quality or capacity that we need to serve the broader US and global health care needs.

There's a couple of times where I've felt the way we practice medicine today is just not good enough, and I remember many times being in clinic as a primary care physician having a patient sit in front of me and explain their problems and knowing that there is some limitation I have in my memory, my recall, and my ability to connect the dots that was preventing me from helping this person in the best way possible.

Humans were working off fallible memory, logical and cognitive biases, we may be hungry before lunch, and that's making us feel rushed with a particular patients. You're dealing with life or death decisions, patients being rushed in with a heart attack, being alone in the ICU at 2 a.m. with a patient whose blood pressure is falling and who is not responding to any medications. How do you comfort a family member who's grieving the loss of their son or daughter?

And it felt like all of these were shortcomings, I often felt guilty at the end of each clinic day realizing that if I had a perfect memory, if I had read every journal article, if I had infinite time, I could help these people so much better than I was.

Muthu Alagappan: I remember practicing medicine and wanting to have an impact on people, but feeling like that impact was constrained to one patient at a time, one visit at a time. I've been fortunate in my career where I've gone into the depths of both clinical AI and AI research, but also the practice of medicine, having two depths of experience, one in AI in medicine.

And one of the things I was really excited about when transitioning from clinical medicine into technology was the ability to scale impact, the ability to help people not one at a time, but at a large magnitude, where a single software application, a single new algorithm, a new technique could suddenly help millions of people or billions of people, and that's what first led me to move away from daily practice of medicine to helping build technology companies that could have this large scale paradigm shifting change on healthcare overall.

Muthu Alagappan: Many of the AI solutions being worked on in healthcare were improving doctors' capacity by maybe 10% or 20%, but what that actually translates to then is instead of seeing 4 patients an hour, you're maybe only able to see 5 patients an hour. And while that is a meaningful improvement, we felt like it wasn't enough to truly make a difference in the access to care, and the quality of care, and how personalized care was.

Speeding up doctors by 20% wasn't going to solve that problem and so we really wanted to go at the root cause of the problem, which is not how do you do administrative work faster, but how do you actually deliver care itself faster, higher quality, more personalized.

So we set out on this mission to think in multiples, not percentages. What does it look like to 10x the world's clinical supply?

Muthu Alagappan: We had a choice of do we want to build software that tried to practice medicine on its own or one that augmented existing doctors, and we felt really strongly that the right care model here would be one that combined AI with human doctors for supervision and guidance such that you get the best of both worlds we believe either alone is insufficient.

AI only chatbots have the problem of hallucination, a lack of supervision, and a lack of ability to actually action on the advice they give, and human doctors have the fundamental laws of physics that constrain their ability to see enough patients with enough quality in a given time.

We started thinking about our AI augmentation as a sort of Iron Man suit for our clinicians. Imagine a physician that can supercharge their own abilities, essentially obtain these clinical superpowers by using our AI platform. They could suddenly remember every article they've ever read. They could review a patient's chart, even if it's hundreds of pages within seconds.

And the other unique thing about counsel is that we built our own physician group in-house. So today we run and operate a 50-state medical practice with our own employed physicians. And the reason that's important is it means we control not only the Iron Man suit, but the iron men and women themselves, and we can truly create the best combination of human and AI working together.

Muthu Alagappan: I've often tried to make decisions where are my strengths was really important to solve some of the hardest challenges ahead in the world of clinical AI. It's because these problems aren't specific to a single domain. They sort of cross over between both domains. It requires you to understand how do doctors do it today, but also requires you to understand the art of the possible with AI.

If you only understood one of those two disciplines, you would be fundamentally constrained both in the creativity but also the depth of the types of solutions you could create. We all have different strengths, but where are my unique strengths most suited to have the most meaningful contributions in startups, this is often called founder market fit, but where are you as a founder best suited to solve a particular market challenge?

One of the things that I've found as a founder is there are always so many fires, so to speak, going on at the company or in the business, and it's really impossible to devote your full attention to all of those fires at one time. And if you try, you end up doing a subpar job across the board.

One of the things that I think medicine has really taught me is the ability to identify out of 20 patients you may be taking care of, who are the one or two patients that need all your attention right now and how do you really focus in an outsized way on the couple of problems in this case patients that matter the most.

Muthu Alagappan: When building a company like Counsel Health, there are two themes constantly in tension. One is the medical theme and premise of do no harm, the Hippocratic Oath, and the other is the start-up adage of move fast and break things, the idea that only by taking risks and moving quickly can you truly unlock innovation at scale when building a medical AI care delivery platform like counsel, those two things could be at odds, but we found a really elegant way to resolve them.

First and foremost, we focus on do no harm. How do we ensure that everything we deploy, every aspect of the care model, not only has physician supervision baked in, but also has been evaluated and tested to be high quality, safe, and at the very least exceeding the performance of the world's very best doctors at the same time, because we have an in-house physician group, we're able to safeguard our AI where we can have our AI take risks, be more innovative in the way the AI is suggesting diagnoses and reviewing the literature, knowing that all of those things will be safeguarded and supervised by a physician in the loop.

In that way, we get to enjoy the best of both worlds. We get to make sure the end patient experiences no harm. Yet at the same time, we can have our AI push the boundaries of what AI is capable of.

Muthu Alagappan: The world as we know it in healthcare in most industries will probably change fundamentally over the next 5 years. There's going to be a massive reshuffling of norms and paradigms. The way we interact with a lawyer, a doctor, an accountant, even an investor will change greatly in the next 5 years.

We even wonder sometimes, will we tell our children in 20 or 30 years about this concept of primary care doctors, and will they look at us with sort of admiration and wonder at this idea that there was only a single person and they didn't really remember your medical records and if you traveled you couldn't really get access to them and maybe one day that'll all feel a bit old fashioned, not solving perhaps for the next 5 years, but solving for what the world will look like as a result of this reshuffling.

If it's the case that everyone is accessing care via their phone, what does that mean in terms of computational and video needs on a phone? What does that mean for how we structure pharmacies?

Muthu Alagappan: Don't act like you hit a triple when you were born on 3rd base. While today is a celebration, I think it's also a recognition that in one way or another, we were all born on 3rd base. So many of us are born with so many things that we're fortunate for that we've been sort of gifted, and in my mind, I view a lot of that as a responsibility to then give back, not just proportionally, but even in an outsized way.

And so, I think a lot of what motivates me is giving back in a way that feels outsized to what's been given to me in terms of opportunities, in terms of the people I've met, the education I've been able to receive.