Cover Page - shares	6 Months Ended
	Jun. 30, 2026	Aug. 04, 2026
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2026
Document Transition Report	false
Entity File Number	001-42679
Entity Registrant Name	Omada Health, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-2355015
Entity Address, Address Line One	611 Gateway Blvd
Entity Address, Address Line Two	Suite 120
Entity Address, City or Town	South San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94080
City Area Code	888
Local Phone Number	987-8337
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	OMDA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		61,216,703
Entity Central Index Key	0001611115
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--12-31