Siggy Raises $6M Pre-Seed to Track Mental Health Between Visits

Siggy has raised $6 million in pre-seed funding to build a mental health service that uses AI to collect patients' histories and track their progress between appointments with licensed clinicians, the New York-based startup told Crunchbase News exclusively.

The round is Siggy's first outside money. Village Global, the venture firm backed by network of prominent investors, led the financing. The founders plan to spend it on hiring more clinicians and engineers, developing the software, and working through regulatory requirements, they said.

The company pairs two operators who've already built businesses delivering care outside the traditional doctor's office. Jonathan Sabbagh, Siggy's CEO, co-founded Journey Clinical, which supports practices offering ketamine-assisted psychotherapy, and remains its executive chairman. Edvard Engesæth, Siggy's COO and a physician by training, co-founded Nurx, the telehealth service that started with birth control prescriptions delivered to patients' homes. Nurx grew to more than 2 million patients and an annual revenue run rate above $100 million before merging with Thirty Madison in 2022, Engesæth said.

The founders began building Siggy in late 2025. The startup recently started accepting paying patients ahead of its public launch, and the next step is testing the service with those paying patients before expanding further.

Who put in the money?

Several investors in the round had previously backed one or both founders. The list includes Albert Wenger of Union Square Ventures, Mercury co-founder Immad Akhund, and Cityblock Health co-founder Toyin Ajayi through Coalition Operators. PsyMed Ventures, Mystic Ventures and Gokul Rajaram also participated.

Amrit Rao, a general partner at Village Global, told Crunchbase News via email that the founders' track record building healthcare companies was a major reason he invested. Siggy's insurance-friendly approach mattered too. "Pairing that vision with an insurance-based model makes the ambition about access as much as technology," Rao said.

Akhund, who invested personally and is a repeat backer of both founders, pointed to their longer-term goal of using AI to understand each patient's brain health well enough to detect changes early. "That's why I'm backing them again with Siggy," he said, "and why I'm excited to be in early on what they build next."

What does Siggy actually change for patients?

Sabbagh's pitch starts with a gap he says he hit himself in mental healthcare. Therapists and the clinicians who prescribe medication often work separately. A patient might see a therapist weekly but get only a brief appointment every few months with a prescriber, leaving little time to discuss shifting symptoms or medication side effects.

Siggy attacks that gap with AI conversations and daily check-ins. "AI helps maintain the conversation and organize what patients share, so clinicians have a richer picture of the person that they're treating," Engesæth said.

The workflow runs like this:

• Patients start with a free AI conversation covering their history.
• They then meet a licensed clinician by video, who reviews that information, makes a diagnosis and prescribes medication if appropriate.
• Between appointments, patients can talk with Siggy's AI and check in daily on sleep, mood, medication and how they feel physically.
• Those answers combine with wearable data into a daily "Siggy Score" out of 100, visible to both patient and clinician.

Patients can opt to connect devices like Whoop, Oura or Apple Watch, which adds sleep, activity, heart rate and heart rate variability data to the daily check-ins. The company aims to use those patterns to flag difficult stretches early, including cases where patients report feeling fine despite worsening sleep or other physical changes. If the score shifts, the software flags it for a clinician to review. Patients also get weekly check-ins during their first eight weeks of treatment.

Clinicians decide whether to continue treatment or adjust medication, handle all medical questions, and can help patients taper off gradually when appropriate. Siggy does not prescribe controlled substances and is not a crisis service, the founders said. Patients can keep seeing their existing therapists while using Siggy, Sabbagh said, and a planned feature would let them share information with other providers and involve loved ones in their care.

A founder's own burnout behind the idea

Sabbagh spent two decades in finance before burning out and eventually being diagnosed with PTSD related to childhood trauma. He said ketamine-assisted therapy helped him recover, and he went back to school to study psychology at 38 before co-founding Journey Clinical.

Engesæth was an early investor in Journey and advised Sabbagh as he built it. The two had considered starting a company together for years, and with Siggy they want to make the regular contact and coordination Sabbagh had with his own providers available to more patients.

The insurance angle

Siggy accepts commercial insurance in all 50 states and is expanding into government insurance programs. Patients can also pay directly, with insured patients' costs varying by plan. Insurance was a priority because many prospective patients can't afford treatment out of pocket, Engesæth said. The founders also say the service will be permanently free to veterans.

For practitioners, the model signals where AI-assisted mental healthcare is heading: not replacing clinicians, but filling the data vacuum between their appointments. Whether Siggy's daily scoring and wearable integration can translate into measurably earlier interventions, and better outcomes, is the test its paying-patient rollout will now run.