Defiant Health

Private

Boston, MassachusettsHealthcare & Life Scienceshttps://www.defianthealth.com/

Last Round

Seed

Jul 11, 2025

Total Funding Raised

$3.83M

Company Overview

Defiant Health is a clinics/outpatient services company that operates a virtual breast health clinic intended to accelerate expert diagnosis and treatment for breast cancer.

Sector

Healthcare & Life Sciences

Verticals

Precision Medicine, Fashion & Beauty, Sports & Fitness, Subscription Commerce

Business Model

B2C

Customer Profile

Services & Consulting, Subscription SaaS

AI Layer

Non-AI

Keywords

med spamedically supervised weight lossGLP-1 programpeptide therapyIV therapyconcierge medicinelongevity clinicbiohackingsemaglutidetirzepatidehormone replacement therapyHRTcash-pay healthcaremedical aestheticsdirect primary careDPCNAD+ therapyhyperbaric oxygen therapyHBOTcryotherapy

Historical Pricing

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Caplight Momentum Score

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Defiant Health Comps

Public and private peers based on sector, stage, and business model.

Defiant Health comps — public and private peers by sector, stage, and business model
Company	Status	Est. Valuation	Rev Multiple
OpenAI	Private	$86.0B	~40x
Cohere	Private	$5.0B	--
Competitor 1	Public	$XX.XB	XXx
Competitor 2	Public	$XX.XB	XXx

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Defiant Health Funding Rounds

Historical fundraising activity

Data table
Round	Date	Amount Raised	Valuation	Investors	Sources
Seed	Jul 11, 2025

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Key People

Founding team and executive leadership

Walt Cooper

CEO

Executive Team

Defiant Health Investors

Notable investors and investment history

Defiant Health investors
Investor	Rounds
Headwater Ventures	Seed
Hannah Grey VC	Seed
Amboy Street Ventures	Seed
City Light Capital	Seed

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Market signals

Structured signals derived from secondary market and firmographic data.

Jul 20, 2025
Grew 600% QoQ from 1 to 7 employees.

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Defiant Health Filings

SEC and related filings with document metadata.

Data table
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Defiant Health Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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Firmographic Details

HeadquartersBoston, Massachusetts

Employee Range4

Year FoundedN/A

Last FundingJul 11, 2025

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