City Block
Unicorn · $6BBrooklyn, US · Founded 2017 · Delaware corporation · 8 employees on LinkedIn · 11 known investors
Cityblock provides primary care and health services focused on making healthcare accessible as a basic right, particularly serving underserved and marginalized communities with an emphasis on trust-based, inclusive care.
Also known as City Block Health · Cityblock · Cityblock Health
Founders & leadership
City Block was founded in 2017 by Dr. Toyin Ajayi, Iyah Romm, Toyin Ajayi, and Mat Balez.
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Board



Investors · 11
Reported raises · per SEC filings
Form D private placements$847.8M disclosed across 6 rounds · 2017–2021
▶$374MraisedSep 2021 · 14 investors · Other TechnologyRule 506(b)
- Iyah RommExecutive Officer, Director
- Andrea BlankmeyerExecutive Officer
- Nagraj KashyapDirector
- Ambar BhattacharyyaDirector
- Wendy ChowExecutive Officer
- Susan BrownExecutive Officer
- Deval PatrickDirector
- Daniel DoctoroffDirector
- Jennifer SchneiderDirector
- Yvette BrightDirector
- Andy SlavittDirector
- Chris BischoffDirector
- Toyin AjayiDirector
- Offering amount
- $400M
- Amount sold
- $374M
- First sale
- Sep 2021
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$183.3MraisedMar 2021 · 19 investors · Other TechnologyRule 506(b)
- Toyin AjayiDirector
- Wendy ChowExecutive Officer
- Andrea BlankmeyerExecutive Officer
- Hemant TanejaDirector
- Jennifer SchneiderDirector
- Chris BischoffDirector
- Elliot GeidtDirector
- Ambar BhattacharyyaDirector
- Daniel DoctoroffDirector
- Iyah RommExecutive Officer, Director
- Offering amount
- $192.3M
- Amount sold
- $183.3M
- First sale
- Mar 2021
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$151.4MraisedDec 2020 · 17 investors · Other TechnologyRule 506(b)
- Hemant TanejaDirector
- Iyah RommExecutive Officer, Director
- Daniel DoctoroffDirector
- Andy SlavittDirector
- Ambar BhattacharyyaDirector
- Elliot GeidtDirector
- Chris BischoffDirector
- Toyin AjayiDirector
- Wendy ChowExecutive Officer
- Andrea BlankmeyerExecutive Officer
- Offering amount
- $160M
- Amount sold
- $151.4M
- First sale
- Dec 2020
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$53.3MraisedJul 2020 · 16 investors · Other TechnologyRule 506(b)
- Iyah RommExecutive Officer, Director
- Elliot GeidtDirector
- Wendy ChowExecutive Officer
- Chris BischoffDirector
- Daniel DoctoroffDirector
- Andy SlavittDirector
- Toyin AjayiDirector
- Ambar BhattacharyyaDirector
- Offering amount
- $54M
- Amount sold
- $53.3M
- First sale
- Jun 2020
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$65.1MraisedApr 2019 · 15 investors · OtherRule 506(b)
- Andy SlavittDirector
- Ambar BhattacharyyaDirector
- Elliot GeidtDirector
- Daniel DoctoroffDirector
- Iyah RommExecutive Officer, Director
- Offering amount
- $65.1M
- Amount sold
- $65.1M
- First sale
- Mar 2019
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$20.8MraisedMay 2018 · 22 investors · Other TechnologyRule 506(b)
- Daniel DoctoroffDirector
- Ambar BhattacharyyaDirector
- Andy SlavittDirector
- Iyah RommExecutive Officer, Director
- Offering amount
- $20.8M
- Amount sold
- $20.8M
- First sale
- Dec 2017
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Cityblock (Cityblock Health) is a Brooklyn, New York-based healthcare provider that delivers primary care, urgent care, hospital-to-home transitions, mental health services and social care to people with complex health and social needs. The company describes itself as a value-based provider that partners with health insurance companies, and its stated focus is on Medicaid beneficiaries and individuals dually eligible for Medicare and Medicaid. Care is delivered by multidisciplinary teams of doctors, nurses, counselors, behavioral health specialists, social workers, technologists and healthcare industry staff, and can be provided in neighborhood locations or in members' homes, with a phone line staffed 24 hours a day, seven days a week.
The company frames its model around combining clinical and community support with technology, using what it calls high-touch, high-trust and high-tech care. It works with community-based organizations such as housing agencies, shelters, hospitals and specialty providers, and selects new market locations based on accessibility factors such as proximity to public transportation and grocery stores. Its stated mission is to improve the health of marginalized communities at scale, and its stated vision is to become the leading nationwide provider of tech-enabled value-based healthcare for individuals with complex needs. According to one profile, the company has set a goal of reaching 10 million people within 10 years.
Founding story
Cityblock was launched in 2017 by Dr. Toyin Ajayi together with co-founders Bay Gross and Iyah Romm. Ajayi, a board-certified family physician who grew up in Nairobi, Kenya, trained at Stanford University, the University of Cambridge (MPhil) and King's College London School of Medicine, and previously worked at Boston University/Boston Medical Center and at Commonwealth Care Alliance, where she was Chief Medical Officer from 2015. Her experience caring for low-income patients with chronic conditions who relied on emergency rooms informed the company's focus on human-centered care for marginalized communities.
Business model
Cityblock operates as a value-based care provider that contracts with health insurance companies (health plans) rather than selling directly to consumers, delivering care to those plans' members with complex needs, particularly Medicaid and dual-eligible populations. Its care delivery combines in-person neighborhood clinics, home visits and 24/7 telephone access, supported by internally built technology.
Sources describe Cityblock as a value-based provider partnering with health insurance companies; a secondary profile states the company reported a three-times year-over-year increase in revenue in 2021. No further detail on contract structures is given in the sources.
Traction
A secondary profile reports more than 70,000 members across markets including New York, Massachusetts, Connecticut, North Carolina, Ohio and Washington, D.C., cumulative funding of $891.3 million from 34 investors, a valuation of $6 billion as of May 2022, and a threefold year-over-year revenue increase reported in 2021.
Latest developments
The company's site advertises active hiring, lists insurance partners in seven markets, and promotes a newsroom item about a new addition to the Cityblock Health board of directors with a background in consumer digital health. No dated recent developments beyond this are available in the sources.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Cityblock states a vision of becoming the leading nationwide provider of tech-enabled value-based healthcare for people with complex needs. A secondary profile reports the company had raised $891.3 million from 34 investors and reached a $6 billion valuation by May 2022, with more than 70,000 members across its markets.
Differentiators cited in the sources include a combined clinical, behavioral health and social care team model; delivery of care in members' homes and neighborhoods as well as clinics; 24/7 availability; explicit focus on Medicaid and dual-eligible populations; and integration of technology with community-based partnerships.
Technology
The company positions itself as tech-enabled, pairing clinical staff with technologists and using what it describes as responsive technology intended to let care teams spend more time with members. Specific platform details are not disclosed in the available sources.
Go-to-market
Cityblock enters markets by partnering with health insurance plans that cover Medicaid and dual-eligible members, then establishes local presence and collaborates with community partners and local healthcare providers. Market selection reportedly considers where the company's presence will make the most difference, including proximity to public transportation and grocery stores. Member acquisition and engagement run through plan partnerships and a 24/7 call/text line.
Medicaid beneficiaries and individuals dually eligible for Medicare and Medicaid, particularly people with complex, chronic conditions and unmet social needs such as food insecurity, unstable housing and limited social support. Its commercial counterparties are health insurance companies operating in its markets.
Geography
Headquartered in Brooklyn, New York. Insurance partnerships are listed in Connecticut, Indiana, Massachusetts, New York, North Carolina, Ohio and Washington, D.C. A secondary profile lists markets in New York, Massachusetts, Connecticut, North Carolina, Ohio and Washington, D.C.
History
Founded in 2017 in Brooklyn, New York. The company raised an initial $20 million round in 2018 from investors including Thrive Capital and Maverick Ventures. Toyin Ajayi initially served as president and was appointed CEO in March 2022. Later investors named include Tiger Global, Wellington Management, General Catalyst and Goldman Sachs Asset Management.
Risks & controversies
No risks, litigation or controversies are described in the available sources.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 3
by search overlapCompanies competing with City Block for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 3
launches, deals, and filingsCityblock's newsroom features a post by an incoming board member describing their consumer digital health experience as the basis for joining the Cityblock Health Board of Directors; no date or name is given in the source.
Co-founder Dr. Toyin Ajayi, who initially served as president of Cityblock, was appointed chief executive officer in March 2022.
Cityblock raised its first funding of $20 million from investors including Thrive Capital and Maverick Ventures.
$20M source ↗
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities · 1
corporate structure▸Research sources · 8
primary sources listed
- City Blockcityblock.com · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does City Block do?
- Cityblock is a tech-enabled, value-based care provider serving Medicaid and dual-eligible members with complex needs.
- Who founded City Block?
- City Block was founded by Dr. Toyin Ajayi, Iyah Romm, Toyin Ajayi, Mat Balez in 2017.
- Who are City Block's investors?
- City Block's investors include 8VC, Echo Health Ventures, General Catalyst, Kinnevik, Lifeforce Capital, Maverick Ventures, Open Opportunity Fund, SoftBank Vision Fund and 3 more.
- How much funding has City Block raised?
- City Block has disclosed $847.8M raised across 6 rounds.
- Where is City Block headquartered?
- City Block is headquartered in Brooklyn, US.


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