Zach Weinberg
General Partner @ Operator Partners
New York, United States
Zach Weinberg is a seed investor at Operator Partners in New York focused on Software and Health Care. Before co-founding Flatiron, Zach was Co-Founder, President and COO of Invite Media, an advertising technology company based in NYC. Invite Media built the industry's first enterprise advertising platform for buying and optimizing online media in real-time. Invite Media was acquired by Google in 2010. Prior to Invite Media, Zach co-foundedEatNow.com which was privately acquired. An active angel investor, Zach has invested in over 30 technology startups throughout the country, including Bell Biosystems, Breakthrough.com, Care at Hand, DocPhin, Doctor Evidence, Genomera, Meddik, Oscar, and Predilytics. Zach studied economics and entrepreneurship at The Wharton School at the University of Pennsylvania.
- Total investments:
- 77
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Zach Weinberg invests in
Stages Zach Weinberg invests in
Countries Zach Weinberg invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $1.5M–$7.6M
- Pre-Seed
- $1.5M–$2.3M
- Series A
- $5M–$30M
Investment Focus
Industry
- Software 24 (31%)
- Health Care 20 (26%)
- SaaS 10 (13%)
- Medical 10 (13%)
- Artificial Intelligence 10 (13%)
Stage
- Seed 41 (53%)
- Series A 20 (26%)
- Pre-Seed 4 (5%)
- Series B 4 (5%)
- Funding Round 3 (4%)
Country
- United States 58 (75%)
- Israel 1 (1%)
- Colombia 1 (1%)
- New Zealand 1 (1%)
- United Kingdom 1 (1%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Crosby is a company with programmers from Ramp, Vanta, Meta, and Google joining attorneys. | $5.8M / Seed / Jun 17, 2025 | ||
| Nourish is a healthcare technology company that connects patients with registered dietitians through virtual nutrition counseling services covered by insurance plans. The platform allows users to find dietitians based on their health goals and attend appointments through telehealth, while also offering tools for meal tracking, goal monitoring, andnutrition guidance through its mobile application. Nourish works with registered dietitian nutritionists who provide support for conditions such as diabetes, weight management, cardiovascular health, eating disorders, and pediatric nutrition care. The company states that it partners with major insurance providers to reduce out-of-pocket costs for patients and offers ongoing nutritional care through recurring consultations. In addition to patient services, Nourish publishes educational resources and uses data-driven approaches to support personalized nutrition planning and long-term health management. | $8M / Seed / Feb 01, 2023 | ||
| Scoop is a creator of multi-platform tools that enable businesses and workers to take advantage of flexible work arrangements.The company's platform provides the tools and information required to reduce operational costs while giving workers the opportunity to work from any location, making it simple for businesses to run both an in-officeand remote environment.Scoop was established in January 2015 by Rob Sadow and Jonathan Sadow in San Francisco, California. | $8M / Seed / Nov 17, 2022 | ||
| Overwatch Research provides an all-in-one experimental tracking software for Vivo research. Overwatch Research affords to Save time, reduce error and increase collaboration in the lab. | $3.5M / Seed / Oct 19, 2021 | ||
| Oshi Health is a virtual-first gastroenterology (GI) clinic that diagnoses, treats and remotely monitors digestive (GI) conditions. Patients work with Oshi Health's integrated care team of gastroenterologists and GI-specialized nurse practitioners, registered dietitians, behavioral psychologists and health coaches to determine the root causesof their symptoms and use a personalized care plan that includes medication, dietary interventions and stress/anxiety reduction to get symptoms under control. This yields improved health outcomes, quality of life, satisfaction with care and workplace productivity while reducing overall healthcare cost. | $23M / Series A / Oct 12, 2021 | ||
| Iterative Scopes delivers tools for physicians and life sciences in colorectal cancer and inflammatory bowel disease space. The company was founded in 2017 and is based in Cambridge, Massachusetts. | $30M / Series A / Aug 03, 2021 | ||
| Iterative Health is a healthcare technology and services company that focuses on accelerating clinical research to improve patient outcomes through innovative approaches. The company transforms gastrointestinal (GI) care by utilizing AI-driven clinical trials and diagnostics, significantly enhancing access to vital treatments. | $30M / Series A / Aug 03, 2021 | ||
| Connie Health empowers older Americans to make confident, worry-free healthcare decisions. | $13M / Series A / Jul 28, 2021 | ||
| Nym transforms revenue cycle management by fully automating the medical coding process. Our engine deciphers clinical language in patient charts and accurately assigns medical charge codes in seconds and with zero human intervention. By automating medical coding with Nym, healthcare providers can improve coding quality while significantlyreducing the time and cost associated with medical coding. This ultimately ensures clinical and administrative teams can spend more time focused on patient care. | $25M / Series B / Jul 27, 2021 | ||
| HumanFirst accelerates the adoption of patient-centered clinical trials using precision digital measures (e.g., digital biomarkers and eCOA).At HumanFirst, we offer a precision measures platform - the world’s largest AI-powered SaaS platform trusted to improve human outcomes. We provide insights, intelligence, and accuracy with validated evidencedata to precisely guide and accelerate human-centric drug development. Twenty-two of the 25 largest pharmaceutical companies in the world have used the HumanFirst platform to evaluate and enable the deployment of digital health technologies (DHTs). | $12M / Series A / May 31, 2021 | ||
| See all 77 investments → | |||
Co-Investors
About Operator Partners
Operator Partners invests in early-stage technology companies and founders. The firm was founded in 2020 and is headquartered in New York, United States.
Operator Partners Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Amit Avner
General Partner
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Gil Shklarski
General Partner
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Nat Turner
General Partner
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Olivia Benjamin
Partner
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Zach Goldstein
Partner
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FAQ
What does Zach Weinberg invest in?
Zach Weinberg invests primarily in Software, Health Care and SaaS startups, most often at Seed and Series A stage. Most of the 77 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Zach Weinberg's check size?
Zach Weinberg typically joins rounds of $1.5M–$7.6M at Seed, $1.5M–$2.3M at Pre-Seed and $5M–$30M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Zach Weinberg participates in.
How do I contact Zach Weinberg?
Public channels for Zach Weinberg include LinkedIn and X (Twitter). For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Zach Weinberg last invest?
The most recent investment recorded for Zach Weinberg closed in Jun 2025. Shizune tracks 77 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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