Zocdoc is a popular platform used by patients to book medical appointments online. Over the years, it has become a key player in healthcare technology. If you’re wondering who owns Zocdoc and how the company is structured, this article will break down its ownership, leadership, financials, and related companies.
Zocdoc Profile
Zocdoc is a U.S.-based healthcare technology company that operates a digital platform allowing patients to find doctors, book appointments, and access telehealth services. Its mission is to give power to the patient by making healthcare more accessible, transparent, and user-friendly. The platform connects millions of patients with thousands of healthcare providers across multiple specialties. Users can search based on location, specialty, insurance, availability, and reviews.
Founded in 2007, Zocdoc initially launched in New York City. It later expanded across the United States and continues to serve both major cities and smaller regional markets. The company’s model is built around creating a seamless appointment experience that benefits both patients and doctors.
Major Milestones
- 2007: Zocdoc is founded by Cyrus Massoumi, Oliver Kharraz, and Nick Ganju. It starts as a simple tool to find open medical appointments in New York.
- 2008–2010: The company expands to several major U.S. cities including Chicago, San Francisco, and Washington, D.C.
- 2010: Raises $15 million in Series B funding from Founders Fund and Khosla Ventures.
- 2011: President Obama praises Zocdoc in a speech as an example of how technology can improve healthcare.
- 2014: Reaches 5 million monthly users. Raises over $150 million in additional funding, reportedly reaching a $2 billion valuation.
- 2015: Co-founder Cyrus Massoumi steps down as CEO. Dr. Oliver Kharraz takes over as the new CEO.
- 2020: Launches Zocdoc Video Service in response to COVID-19, allowing providers to conduct virtual visits through its platform.
- 2021: Transitions from a pay-per-booking model to a flat-rate subscription model for healthcare providers.
- 2022–2024: Focuses on expanding telehealth offerings and integrating insurance verification tools. Continues nationwide growth.
Company Details
- Legal Name: Zocdoc, Inc.
- Founded: 2007
- Headquarters: New York City, New York, USA
- Founders: Cyrus Massoumi, Oliver Kharraz, Nick Ganju
- CEO: Dr. Oliver Kharraz
- Industry: Healthcare Technology
- Core Services: Appointment scheduling, telehealth, insurance verification, provider discovery
- Business Model: B2B subscription model with additional revenue from virtual services
- Employees: Estimated 600–800
- Platform Reach: Available in all 50 U.S. states, used by millions of patients and thousands of providers.
Who Owns Zocdoc: Major Shareholders
Zocdoc is a privately held company. It is not listed on any public stock exchange. The ownership is divided between its founders, investors, and employees through stock options. The largest shareholders are the early investors and co-founder Oliver Kharraz, who is also the current CEO.
Here’s an overview of the major shareholders of Zocdoc:
| Shareholder | Type | Role/Contribution | Estimated Stake |
|---|---|---|---|
| Oliver Kharraz | Co-founder / Executive | CEO and key decision-maker. Led transition to subscription model and telehealth expansion. Holds significant equity and voting rights. | 18% |
| Cyrus Massoumi | Co-founder | First CEO of Zocdoc. Retained equity after stepping down in 2015. | 9% |
| Nick Ganju | Co-founder / Former CTO | Built Zocdoc’s technical foundation. Likely retains equity and contributes in an advisory role. | 8% |
| Francisco Partners | Institutional Investor | Invested $150M in 2021 to accelerate growth. Strategic partner aiding in scaling products and services. | 7% |
| Khosla Ventures | Venture Capital Firm | Early investor (Series A & B). Provides strategic advice and deep healthcare-tech experience. | 12% |
| Founders Fund | Venture Capital Firm | Invested in Series B and D. Known for supporting transformative tech firms. | 5% |
| Atomico | Venture Capital Firm | Joined in Series D round. Focused on global scaling of technology platforms. | 4% |
| Baillie Gifford | Institutional Investor | Long-term investor. Joined Series D round. Brings capital and long-term stability. | 4% |
| Goldman Sachs | Investment Bank | Invested in Series C (2011). Brought major financial backing and institutional credibility. | 6% |
| DST Global | Investment Firm | Invested $50M in 2011. Supported early product expansion and platform development. | 3% |
| Bezos Expeditions | Private Investment Firm | Jeff Bezos’ personal investment firm. Early investor (Series A). Helped fuel early stage growth. | 3% |
| Craft Ventures | Venture Capital Firm | Participated in Series B. Brought operational expertise in scaling SaaS and marketplace platforms. | 1% |
| SV Angel | Seed Fund | Participated in early funding rounds. Helped refine platform in early stage. | 1% |
| Jason Finger | Angel Investor | Co-founder of Seamless. Participated in Series B. Provided strategic insights into digital marketplaces. | 1% |
Oliver Kharraz
Dr. Oliver Kharraz, co-founder and CEO, holds a significant equity stake in Zocdoc. Since assuming the CEO role in 2015, he has steered the company through pivotal transformations, including the adoption of a subscription-based model and the expansion into telehealth services. His leadership and substantial ownership position him as a central figure in Zocdoc’s strategic direction.
Cyrus Massoumi
Cyrus Massoumi, another co-founder and the company’s first CEO, played a crucial role in Zocdoc’s early development. Although he stepped down in 2015, he retained a portion of his equity. His continued involvement in the health tech sector, notably through ventures like Dr. B, underscores his lasting influence.
Nick Ganju
Nick Ganju, co-founder and former CTO, contributed significantly to Zocdoc’s technological foundation. While specific details about his current equity stake are not publicly disclosed, his early contributions and possible ongoing advisory roles suggest continued involvement in the company’s trajectory.
Francisco Partners
In February 2021, Francisco Partners, a global investment firm specializing in technology businesses, invested $150 million in Zocdoc. This investment aimed to accelerate Zocdoc’s growth and expand its product offerings. Francisco Partners’ involvement signifies a strategic partnership to enhance Zocdoc’s market position.
Khosla Ventures
Khosla Ventures, led by Vinod Khosla, has been a prominent investor in Zocdoc since its early stages. Participating in multiple funding rounds, including Series A and Series B, Khosla Ventures has provided not only capital but also strategic guidance, leveraging its expertise in the healthcare and technology sectors.
Founders Fund
Founders Fund, co-founded by Peter Thiel, invested in Zocdoc during its Series B and Series D funding rounds. Known for backing transformative technology companies, Founders Fund’s investment reflects confidence in Zocdoc’s potential to innovate within the healthcare industry.
Atomico
Atomico, a European venture capital firm founded by Niklas Zennström, participated in Zocdoc’s Series D funding round. With a focus on scaling disruptive technology companies globally, Atomico’s investment aligns with Zocdoc’s ambitions to expand its reach and impact.
Baillie Gifford
Baillie Gifford, an investment management firm based in Edinburgh, Scotland, joined Zocdoc’s Series D funding round. Known for its long-term investment approach, Baillie Gifford’s involvement suggests a commitment to supporting Zocdoc’s sustained growth and innovation in the healthcare sector.
Goldman Sachs
Goldman Sachs invested in Zocdoc during its Series C funding round in 2011. As a leading global investment banking firm, Goldman Sachs’ participation provided Zocdoc with significant capital and credibility, aiding in its expansion and development during a critical growth phase.
DST Global
DST Global, an investment firm focusing on internet-related companies, invested $50 million in Zocdoc in 2011. This investment supported Zocdoc’s efforts to enhance its platform and expand its services, contributing to its evolution as a leading digital healthcare marketplace.
Bezos Expeditions
Bezos Expeditions, the personal investment company of Amazon founder Jeff Bezos, participated in Zocdoc’s Series A funding round. This early investment provided Zocdoc with essential capital and strategic support, facilitating its initial growth and development.
Craft Ventures
Craft Ventures, co-founded by David Sacks, invested in Zocdoc during its Series B funding round. Specializing in early-stage technology companies, Craft Ventures’ involvement contributed to Zocdoc’s scaling efforts and product development initiatives.
SV Angel
SV Angel, a San Francisco-based seed fund, participated in Zocdoc’s Series B funding round. Known for backing early-stage startups, SV Angel’s investment provided Zocdoc with additional resources to refine its platform and expand its user base.
Jason Finger
Jason Finger, co-founder of Seamless, invested in Zocdoc during its Series B funding round. His experience in building successful online platforms offered valuable insights and support to Zocdoc during its growth phase.
Who is the CEO of Zocdoc?
Dr. Oliver Kharraz, MD, is the CEO and founder of Zocdoc. Born in Germany, he is the latest in a 300-year family tradition of physicians. He earned his MD and a Doctorate in Neuroscience from Ludwig Maximilian University in Munich.
Additionally, he holds a Master’s Degree in Philosophy from the Jesuit College of Philosophy in Munich. Before founding Zocdoc, Dr. Kharraz served as an Associate Principal at McKinsey & Company, where he developed patient utilization models for national health services and major hospital chains.
Leadership at Zocdoc
Since becoming CEO in 2015, Dr. Kharraz has guided Zocdoc through significant transformations. He transitioned the company from a pay-per-booking model to a subscription-based model, enhancing its appeal to healthcare providers. Under his leadership, Zocdoc expanded its services to include telehealth, responding to the evolving needs of patients and providers. Dr. Kharraz emphasizes a patient-first approach, aiming to make healthcare more accessible and efficient.
Vision for Healthcare
Dr. Kharraz envisions Zocdoc as the “connective tissue” of healthcare, integrating various aspects of the healthcare system to improve patient access and experience. He advocates for the use of artificial intelligence to streamline administrative tasks, such as appointment scheduling and patient communication.
In 2025, Zocdoc launched an AI-powered phone assistant capable of handling multiple calls simultaneously, reducing hold times and improving efficiency.
Recognition and Influence
Dr. Kharraz’s contributions to healthcare innovation have been widely recognized. In 2021, he was named one of Modern Healthcare’s 100 Most Influential People in Healthcare. His leadership continues to shape the future of digital health, focusing on patient empowerment and technological advancement.
Past Leadership
Before Dr. Kharraz assumed the role of CEO, Zocdoc was led by co-founder Cyrus Massoumi, who served as the company’s first CEO from its inception in 2007 until 2015. Massoumi played a pivotal role in the company’s early development and growth. After his departure, Dr. Kharraz took over to lead the company into its next phase of innovation and expansion.
Zocdoc Annual Revenue and Net Worth
Zocdoc’s estimated annual revenue for 2025 exceeds $500 million. This growth is attributed to the company’s strategic shift from a flat subscription model to a variable revenue model, which has allowed for deeper investments in product development, technology, and marketing. The expansion into telehealth services and the enhancement of its platform have also contributed to this revenue increase.
Zocdoc’s current valuation stands at approximately $1.8 billion as of May 2025. This valuation reflects the company’s robust financial performance, successful business model transformation, and its significant role in the digital health sector. The company’s ability to adapt to changing market dynamics and its focus on patient-centric services have been pivotal in maintaining and enhancing its market value.
Here’s a breakdown of the historical revenue and net worth of Zocdoc:
| Year | Estimated Revenue (USD) | Estimated Valuation (USD) | Key Developments |
|---|---|---|---|
| 2015 | $71 million | $1.8 billion | Transitioned to a variable revenue model to address unsustainable growth. |
| 2016 | ~$100 million* | ~$1.8 billion* | Continued expansion and refinement of business model. |
| 2017 | ~$120 million* | ~$1.8 billion* | Growth in user base and provider network. |
| 2018 | ~$150 million* | ~$1.8 billion* | Enhanced platform features and services. |
| 2019 | ~$200 million* | ~$1.8 billion* | Introduced new pricing models in select markets. |
| 2020 | ~$220 million* | ~$1.8 billion* | Adapted to COVID-19 by launching telehealth services. |
| 2021 | ~$250 million* | ~$1.8 billion* | Secured $150 million in growth financing from Francisco Partners. |
| 2022 | ~$300 million* | ~$1.8 billion* | Expanded telehealth offerings and provider partnerships. |
| 2023 | ~$400 million* | ~$1.8 billion* | Continued growth and platform enhancements. |
| 2024 | ~$450 million* | ~$1.8 billion* | Strengthened market position and service diversification. |
| 2025 | ~$500 million* | ~$1.8 billion* | Focused on innovation and expanding patient access. |
Brands Owned by Zocdoc
As of 2025, Zocdoc operates as an independent digital healthcare marketplace, offering a suite of proprietary products and services designed to enhance patient access and streamline provider operations. While Zocdoc has not publicly disclosed any acquisitions or mergers, it has developed several key platforms and tools in-house.
Below is a list of major brands owned by Zocdoc:
| Entity / Product Name | Type | Launch Year | Description | Key Features / Notes |
|---|---|---|---|---|
| Zocdoc Marketplace | Digital Health Platform | 2007 | Core platform allowing patients to find and book healthcare appointments (in-person or virtual). | Supports 250+ specialties, 18K+ insurance plans, verified patient reviews. |
| Zocdoc Practice Solutions | Provider Tools Suite | 2024 | A comprehensive suite of tools for healthcare providers to manage scheduling, intake, and telehealth services. | Includes Intake, Online Scheduling, and HIPAA-compliant Video Service. |
| Zo (Voice AI Assistant) | AI-powered Phone Assistant | 2025 | AI voice assistant for automating inbound phone bookings and reducing admin burden. | Handles unlimited calls 24/7, resolves 70% of scheduling calls, 3.5 min avg resolution. |
| Zocdoc Sync | Integration Technology | 2019 | Proprietary sync engine that connects Zocdoc’s system with EHR and practice management systems in real-time. | Over 150 integrations completed; supports scheduling interoperability. |
| Integration Partner Program | Strategic Partnership Model | 2024 | Program designed to formalize technical and commercial partnerships with EHR vendors and software providers. | Tiers of partners based on integration level and performance; expands Zocdoc’s reach. |
Zocdoc Marketplace
The Zocdoc Marketplace is the company’s flagship platform, enabling patients to search for and book in-person or virtual appointments across over 250 specialties and more than 18,000 insurance plans. Patients can filter providers based on location, specialty, insurance acceptance, and availability. The platform also features verified patient reviews, assisting users in making informed healthcare decisions.
Zocdoc Practice Solutions
Launched in 2024, Zocdoc Practice Solutions is a suite of tools aimed at reducing administrative burdens for healthcare providers. Key components include:
- Intake: Allows patients to complete forms and submit insurance information online before their visit, reducing wait times and administrative workload.
- Online Scheduling: Enables 24/7 appointment booking directly through a provider’s website or search engines.
- Video Service: Provides a HIPAA-compliant telehealth platform for virtual consultations.
These tools are designed to integrate seamlessly with existing provider workflows, enhancing efficiency and patient experience.
Zo (Voice AI Assistant)
In May 2025, Zocdoc introduced Zo, a voice-based AI assistant that automates phone appointment bookings. Zo can handle unlimited inbound scheduling calls, operating 24/7 to reduce wait times and free up staff for more complex tasks. The AI assistant integrates with existing phone systems and electronic health records (EHRs), offering a configurable solution that adapts to various practice needs. Early adopters report that Zo resolves up to 70% of scheduling calls without human intervention, with average call resolution times under three and a half minutes.
Zocdoc Sync
Zocdoc Sync is a patented technology that facilitates real-time integration between Zocdoc’s platform and various EHR and practice management systems. As of 2022, Zocdoc completed over 150 Sync integrations, enabling seamless online scheduling and appointment management for providers. This technology supports interoperability across diverse healthcare IT systems, enhancing the efficiency of appointment bookings and reducing administrative complexity.
Zocdoc Integration Partner Program
In 2024, Zocdoc launched the Integration Partner Program to strengthen collaborations with EHR and practice management software companies. The program categorizes partners into tiers based on technical and commercial criteria, offering benefits such as enhanced integration capabilities and growth opportunities. This initiative aims to deliver a more integrated and streamlined experience for providers and patients alike.
Conclusion
Zocdoc has grown into a major healthcare platform by solving a real-world problem. It remains privately owned, with shares held by its founders, venture capital firms, and employees. Oliver Kharraz leads the company with a clear focus on making healthcare more accessible. Zocdoc does not own other companies but offers several in-house services that extend its core booking platform.
Understanding who owns Zocdoc gives insight into how it operates and continues to grow in a competitive health tech market.
FAQs
Who funded Zocdoc?
Zocdoc has been funded by a range of prominent venture capital firms and investors. Early funding came from Khosla Ventures and Founders Fund. Later rounds included participation from Goldman Sachs, DST Global, Atomico, and Bezos Expeditions (Jeff Bezos’s personal venture fund). Over time, Zocdoc raised more than $220 million in total funding. In 2021, the company received $150 million in growth financing from Francisco Partners, a global investment firm focused on technology and healthcare companies.
Is Zocdoc only in the US?
Yes, as of 2025, Zocdoc operates exclusively in the United States. The platform is designed to help American patients find doctors who accept their insurance, schedule appointments, and access telehealth services. It currently covers all 50 states and partners with providers across over 250 specialties. There are no publicly announced plans for international expansion.
Who started Zocdoc?
Zocdoc was founded in 2007 by three entrepreneurs: Cyrus Massoumi, Dr. Oliver Kharraz, and Nick Ganju. Cyrus Massoumi served as the company’s first CEO. Dr. Oliver Kharraz, who played a central role in the platform’s design and strategy, later became CEO in 2015. Nick Ganju, the company’s original CTO, helped lead the technological development of the platform.
Where is the company Zocdoc?
Zocdoc is headquartered in New York City, New York. Its main office is located in Manhattan. The company also supports a hybrid workforce, with employees working remotely from across the United States. While its core team is based in NYC, Zocdoc’s services are nationwide, offering digital healthcare access to patients and providers throughout the U.S.
Is Zocdoc a public company?
No, Zocdoc is privately held. It has not gone public and does not trade on any stock exchange.
Who is the largest shareholder of Zocdoc?
The largest shareholder is likely Oliver Kharraz, the current CEO and co-founder. Venture capital firms like Benchmark also hold significant stakes.
How does Zocdoc make money?
Zocdoc earns revenue through subscription fees paid by healthcare providers. It also charges for telehealth appointments and premium listings.