Fundraising Fox

City Block

Unicorn · $6B

Brooklyn, 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.

DT
Dr. Toyin AjayiCo-founder & CEO
IR
Iyah RommCo-founder
TAToyin Ajayi
Toyin Ajayiin𝕏FounderFounder of Cityblock Health, which provides primary care and health services aimed at making healthcare accessible to underserved and marginalized communities through trust-based, inclusive care.
MBMat Balez
Mat BalezinFounderMat Balez is a product manager at Spiral, a division of Block Inc, working on open money and open intelligence. He co-founded Cityblock, a NYC-based healthcare provider, in 2016 and served as its first Chief Product Officer until early 2019, and previously held product leadership roles across startups and large tech companies in education technology, social video, wearable computing, local search, and mobile mapping.

Board

ASAndy Slavitt
Andy Slavittin𝕏Board directorCo-Founder and General Partner, Town Hall Ventures
ABAmbar Bhattacharyya
Ambar BhattacharyyaBoard directorInvestor at Maverick Ventures
EGElliot Geidt
Elliot Geidtin𝕏Board directorManaging Director at Redpoint Ventures
DD
Daniel DoctoroffBoard director

Investors · 11

Reported raises · per SEC filings

Form D private placements

$847.8M disclosed across 6 rounds · 2017–2021

$374MraisedSep 2021 · 14 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗
$183.3MraisedMar 2021 · 19 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗
$151.4MraisedDec 2020 · 17 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗
$53.3MraisedJul 2020 · 16 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗
$65.1MraisedApr 2019 · 15 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗
$20.8MraisedMay 2018 · 22 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • 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
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Company profile

researched Aug 2026

Cityblock (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 reported
Markets with health plan partnershipsJan 20267 states/districts
MembersJan 202270,000 members
Number of investorsJan 202234 investors
Total funding raisedJan 2022$891.3M
ValuationMay 2022$6B

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Competitors · 3

by search overlap

Companies competing with City Block for the same Google search keywords, organic and paid, via search-intersection analysis.

Timeline · 3

launches, deals, and filings
Jan 2026
New member joins Cityblock Health board of directors

Cityblock'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.

source ↗

Mar 2022
Toyin Ajayi appointed CEO

Co-founder Dr. Toyin Ajayi, who initially served as president of Cityblock, was appointed chief executive officer in March 2022.

source ↗

Jan 2018
$20 million first funding round

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
City BlockDelaware

Research sources · 8

primary sources listed

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.