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§ Private Profile · San Mateo, CA, USA
AI health platform for patients with rare & complex conditions. Access health data, guidance, & accelerate rare disease research.
Based in Palo Alto, California, Citizen Health operates an AI-powered consumer health platform that provides patients managing rare and complex conditions with access to their complete medical data and personalized guidance. The company targets a global market of over 400 million individuals affected by rare diseases, utilizing shared patient experiences to help them navigate their conditions and accelerate clinical research. In November 2024, the enterprise closed a $14.5 million seed funding round led by Transformation Capital, with additional equity participation from Wavemaker 360. The organization also secured a strategic program investment and partnership with the Chan Zuckerberg Initiative to advance rare disease drug development. Following its spin-out from a previous cancer patient platform that was acquired and later divested by Invitae, Citizen Health was officially founded in 2023 by Farid Vij and Nasha Fitter.
Citizen Health has raised $45.0M across 2 funding rounds.
Citizen Health has raised $45.0M in total across 2 funding rounds.
Citizen Health is a San Francisco-based healthcare technology company founded in December 2023, building an AI-powered platform that acts as a personalized AI Advocate for patients, particularly those with rare and complex conditions.[1][2][3][5][6] The platform combines AI, community insights, and longitudinal health data—including medical records, genetic information, imaging, and patient-reported outcomes—to help users interpret records, track symptoms, learn from peers, manage appointments, and identify next steps in their care.[1][2][3][4][6] It serves rare disease patients and families, addressing the exhaustion of managing fragmented health data, with features like instant answers to queries (e.g., "When was the last seizure?") and plain-language explanations.[3][6] The company raised $30M in Series A funding in August 2025 (total funding $44M), led by 8VC with participation from Headline, Transformation Capital, Chan Zuckerberg Initiative, and others, and has collaborated with over 10 pharmaceutical partners and 100+ patient communities.[1][2][3]
Citizen Health was co-founded in 2023 by Farid Vij (CEO) and Nasha Fitter (Chief Business Officer), both driven by personal experiences in rare disease advocacy and prior work in patient empowerment.[1][2][4][5] Vij entered healthcare in 2017, co-founding Ciitizen (sometimes referenced as Citizen), a company focused on aggregating patient medical records, genetic data, and imaging—primarily for oncology and precision medicine—which was acquired by Invitae in 2021.[1][2][4] He met Fitter there in 2018, and their shared vision evolved into Citizen Health, assembling a team of AI, healthcare, privacy, and consumer tech experts.[1][2] The idea emerged from gaps in patient data infrastructure and the need for proactive tools, starting with rare diseases affecting over 400 million globally, where 95% lack treatments.[2][4][5] Early traction includes partnerships with the Chan Zuckerberg Initiative's Rare As One Project and rapid funding post-launch.[3][4]
Citizen Health rides the agentic AI wave in healthcare, transforming passive patient portals into proactive advocates amid rising genetic testing accessibility and demands for personalized medicine.[1][2][3] Timing aligns with regulatory pushes like FDA rare disease innovation and challenges from NIH funding cuts, positioning it to accelerate treatments for underserved populations.[2] Market forces favoring it include AI's maturation for healthcare privacy/compliance, explosive rare disease data needs (400M+ affected), and pharma's hunt for real-world evidence via patient-led datasets.[2][3][4] It influences the ecosystem by empowering patients to contribute research-grade data, fostering collaborations with initiatives like Chan Zuckerberg, and shifting healthcare from provider-centric to patient-led models.[1][2][4]
Citizen Health is poised to expand its AI Advocate beyond rare diseases, scaling to all complex conditions with agentic features that automate care navigation and research contributions.[1][3] Trends like multimodal AI integration, decentralized health data, and pharma-patient alliances will propel growth, especially as treatments lag for 95% of rare diseases.[2] Its influence may evolve into a core infrastructure layer for patient empowerment, potentially disrupting silos via richer datasets—building directly on its founders' proven exit to deliver the clarity patients demand in a fragmented system.[1][2][5]
Citizen Health has raised $45.0M in total across 2 funding rounds.
Citizen Health's investors include Sebastian Caliri, 8VC, First Round Capital, Mathias Schilling, Headline (formerly e.ventures), Oak HC/FT, Transformation Capital, Varsha Rao, Tania Simoncelli, Wavemaker Three-Sixty Health.
Citizen Health has raised $45.0M across 2 funding rounds. Most recently, it raised $30.0M Series A in August 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Aug 1, 2025 | $30M Series A | Sebastian Caliri | 8VC, First Round Capital, Mathias Schilling, Headline, OAK HC/FT, Transformation Capital, Varsha RAO | Announced |
| Nov 1, 2024 | $15M Seed | Transformation Capital | 8VC, Mathias Schilling, Tania Simoncelli, Wavemaker Three Sixty Health | Announced |