Assort Health secures $120 million in Series C funding, cementing unicorn status and advancing efforts to build a voice AI agent platform for healthcare.
Menlo Ventures led the round, with Series C support also from Lightspeed Venture Partners, Felicis, First Round Capital, Chemistry, Joe Montana, Tau Ventures, and Quiet Capital.
“Healthcare systems have historically had so many outdated and inefficient processes that are finally being transformed by agent platforms. Assort has established itself as a leader in this category with strong ROI, increased effectiveness for providers, and better outcomes for patients,” said Matt Murphy, Partner at Menlo Ventures. “Their technology has been proven in specialty care, which is really heavy lifting, and now they’re setting their sights on large health systems. These are huge markets with tremendous stakes. Based on their speed of execution and the quality of their solutions, we expect Assort to be active in every area of U.S. healthcare in the coming years, powering every system and practice.”
Assorted Health raised $76 million in a Series B round in October. Founded in November 2023, the company has raised $222 million to date and reached a valuation of $1.2 billion with Series C funding.
The startup is building specialized AI voice agents that support practices ranging from orthopedics to cardiology to immunology by automating doctor appointments and streamlining patient care. The company has expanded beyond scheduling to include medical history forms, referrals, document processing, medication refills, real-time eligibility, and laboratory requests and payments.
The voice AI startup market is experiencing explosive growth due to a surge in venture capital investment. Assort Health is experiencing rapid growth, with sales soaring 20 times in 15 months, said founder and co-CEO Jon Wang. He claims that one of the company’s key differentiators is its large, proprietary, specialized dataset built on 190 million patient interactions, 62,000 treatment protocols, and 1.6 million decision paths.
Executives say the company has developed its own AI model, Synapse, to learn specialized workflow patterns across any deployment and generate the edge cases, tests, and simulations each must handle.
“The first step in our business was understanding how complex and nuanced simply automating patient access can be,” Wang told Fierce Healthcare. “It was really hard to get it right. It took six months to implement the AI agent. We built Synapse, an AI agent that improves with each interaction. We currently have 190,000 We have 10,000 patient interactions working, and what used to take months has now been reduced to weeks. We can now actually deploy this product at scale, with the highest automation rates in the least amount of time for the most complex workflows.”
The company’s thesis is that by owning the front door of healthcare, you unlock the entire patient journey. “We have all the patient communication data and all the business protocols that we’ve spent months building into the engine,” Wang said.
Assorted Health is now focused on the second phase of building a healthcare voice AI platform that will provide concierge and personalized experiences for patients, executives said. “Our big push is to move towards memorable healthcare,” Wang said. “This is basically a transition from a reactive health care system where you feel invisible and you keep telling your story over and over again to every health care provider to a system that remembers.”
To make that happen, Assort Health has developed a voice AI agent that can handle the entire patient journey, including inbound calls, triage, test requests, medication refills, scheduling, insurance eligibility checks, and intakes in any language. Agents also proactively contact patients to close referral loops, automatically address detected care gaps such as mammograms, colonoscopies, and vaccines, and provide no-show collection and payment resolution.
The company says Assort Health’s platform also performs the operational work behind each visit, writing all details such as referrals, document processing, patient intake, and personalized pre- and post-visit forms back into the electronic health record. The company’s technology also gives staff an AI co-pilot, enabling them to manage complex patient access needs in real-time.
The AI agent connects all of this to what the company calls “patient journey memory,” which maintains context across every touchpoint to create a continuous record of each patient. Executives say every interaction between a patient and a healthcare provider is ultimately structured across channels and at every stage of care. Language preferences, visit history, tone, outstanding tasks, and sentiment are all automatically reflected, Wang said.
The goal is to create a patient experience that feels personal and ongoing, rather than transactional.
“We intend to invest more than $70 million in research and development to execute this,” founder and co-CEO Jeffrey Liu told Fierce Healthcare. Prior to joining Assort Health, Liu was a software engineer at Facebook and Athelas.
Assort Health’s platform allows healthcare providers to schedule more appointments, accelerate payment collection, and close critical care gaps without increasing the burden on front office staff. According to the company, customers will see a 5% increase in bookings and a 115% increase in labor capacity.
MDCS Dermatology, a multi-location dermatology practice spanning New York and New Jersey, has been using Assort Health’s AI solution for two years. We started with inbound AI agents to schedule and triage calls to patients, and expanded to outbound AI agents.
“For a dermatology practice, the patient experience is everything, and the practice’s reputation is everything. This is truly our front door. We wanted to choose a tool that was about quality, quality, quality,” MDCS Dermatology CEO Dr. Parineeta Amin told Fierce Healthcare. “We also wanted to work with a vendor that was truly a complete platform. I think one of the challenges for healthcare providers is that many AI applications are sprawling. Everyone is doing a little bit of something, but what healthcare practices really need is a one-stop shop and a platform that continues to innovate.”
MDCS Dermatology operates nine locations and sees more than 130,000 to 138,000 patients annually.
Amin said the practice evaluated all AI solutions on the market. “Assort was the only true platform. Assort runs the entire patient journey as one connected system, from referrals and document processing to reception, closing care gaps, real-time eligibility verification and payment,” she said. “The difference is memory. Others automate some and forget the rest. Assort remembers every patient through every interaction and ties everything together into one conversation. Our automation rate is increasing every quarter as we execute on our ambitious roadmap, and the gap between Assort and everyone else continues to widen.”
Amin said the dermatology clinic has integrated Assorted Health’s AI agents as team members, providing an integrated, intelligent platform that allows the clinic’s various workflows to “talk to each other.” This improves the patient experience and increases appointment bookings.
“We have a 4.9-star rating from 30,000 reviews across multiple platforms, and that rating has remained stable. Our bookings are actually up 20%, which has allowed us to expand this initiative and add more providers,” Amin said.
John Shaker, executive director of the Boston Bone and Joint Institute, says mishandling interactions can not only create operational problems, but also lead to losing new patients entirely. “That’s why we wanted a partner with a proven track record of handling the complexities of specialty care at scale. Assort’s experience with hundreds of implementations gives us confidence in our ability to deliver from day one and help ensure patients are on the right path to care from the first encounter.”
Assort is rapidly expanding into health system operations, working with health systems ranging from large community-based organizations to academic medical centers. Several health systems, including John Muir Health, have partnered with Assort to support increasingly complex outpatient surgeries.
In the healthcare field, the race to acquire AI agents continues. A growing list of startups and large health tech companies see opportunities to apply AI to patient communications and back-end administrative tasks. Health tech company Artera secured $65 million in December to fuel further expansion and build an AI agent to communicate with patients. UnityAI develops agent AI solutions that automate operational and administrative workloads in outpatient and clinical settings.
EliseAI, a company that uses AI to tackle administrative tasks, raised $250 million in Series E funding in August. Startup Hello Patient has built a Gen AI-based agent to handle patient communications in healthcare settings. Tennr, a company that uses AI to automate cumbersome, document-heavy administrative workflows, raised $101 million last June. This week, Prosper AI secured $30 million in financing to expand its Agent AI platform to power administrative tasks from patient scheduling to insurance verification to patient billing.
Liu claims that the company’s proprietary data, platform implementation experience with specialized groups and in-house technology teams give it a competitive edge in the market. Building demos of AI solutions is no longer difficult, he said.
“We believe that what’s defensible is actually what’s hard to get, and what’s hard to get is data. We have the most data, we control the most implementations. We have unique data that Anthropic and OpenAI don’t have, and that these smaller companies don’t have,” Liu said.
Wang expects the market to consolidate. “Provider groups know that, and smart companies aren’t going to buy another point solution. They want one partner with the capital and engineering depth to transform how they operate over the long term, and that’s what we’ve built. Our engineers learn across hundreds of customers and build every implementation for the specific practice at hand,” he said.
