# Cityblock Health

> Cityblock Health is a New York-based, technology-driven healthcare company that delivers integrated primary care, behavioral health, and social services to Medicaid and dually eligible (Medicare-Medicaid) members in underserved communities. Spun out of Alphabet's Sidewalk Labs in 2017, Cityblock pairs neighborhood-based care teams with a custom care-management platform to treat the whole person - medical needs alongside housing, food, and other social drivers of health - under value-based, risk-sharing contracts with health plans. It serves more than 100,000 members across over ten states.

- **Founded:** 2017
- **Headquarters:** New York, United States
- **Founders:** Toyin Ajayi (Co-founder & CEO (former Chief Medical Officer)), Iyah Romm (Co-founder (former CEO; former Chief Transformation Officer, Commonwealth Care Alliance)), Bay Gross (Co-founder)
- **Team size:** ~2,500 employees
- **Products:** Whole-person primary care, Behavioral health, Social care services, Care management platform (Commons), Long-Term Services and Supports (LTSS)
- **Notable:** Named to CNBC's Disruptor 50 list four times (2021, 2022, 2023, 2024)., Spun out of Alphabet's Sidewalk Labs in 2017., Grew to more than 100,000 members across 10+ states.

## Products & services

- **Whole-person primary care** — Neighborhood-based, longitudinal primary care delivered by interdisciplinary teams, including in-home and virtual visits.
- **Behavioral health** — Integrated mental health and substance-use support, therapy, medication management, and case management woven into primary care.
- **Social care services** — Help with social drivers of health - housing, food security, transportation, benefits, and employment - delivered by community health partners.
- **Care management platform (Commons)** — Proprietary technology and data platform that powers risk stratification, care coordination, and 24/7 outreach for care teams.
- **Long-Term Services and Supports (LTSS)** — Expanded offering (2026) for Medicaid and dually eligible members with complex, long-term care needs.

## Achievements

- Named to CNBC's Disruptor 50 list four times (2021, 2022, 2023, 2024).
- Spun out of Alphabet's Sidewalk Labs in 2017.
- Grew to more than 100,000 members across 10+ states.
- Published peer-reviewed evidence (incl. New England Journal of Medicine Catalyst) of reduced hospital admissions and ED visits.
- 2024 study showed an 11.5% cost decrease and nearly 20% drop in inpatient utilization for severe-mental-health Medicaid patients.
- Raised roughly $890M in total funding and reached a valuation above $5.7B.

## Latest updates

- **2026-03** — Published a report on AI in healthcare, defining a standard for Medicaid and dually eligible populations.
- **2026-02** — Expanded Long-Term Services and Supports (LTSS) offering for members with complex needs.
- **2026-01** — Welcomed a new Chief Technology Officer and new board members; announced Meridian Health Plan of Illinois partnership for 10,000 Medicaid members.
- **2025-11** — Aligned with Mercy Health to serve Medicaid members in Ohio.
- **2025-06** — Released survey finding nearly two-thirds of dual-eligible beneficiaries say their health is a day-to-day challenge.

## Links

- Website: https://cityblock.com
- LinkedIn: http://www.linkedin.com/company/cityblock-health
- Twitter/X: https://twitter.com/cityblockhealth
- Facebook: https://facebook.com/CityblockHealth

---

Profile page: https://yespress.io/cityblock-health
Published by YesPress — https://yespress.io
Last updated: 2026-06-15