Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2023
May 05, 2023
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Document Transition Report false  
Document Quarterly Report true  
Trading Symbol MAIA  
Entity Incorporation State Country Code DE  
Entity Registrant Name MAIA BIOTECHNOLOGY, INC.  
Entity Central Index Key 0001878313  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity File Number 001-41455  
Entity Tax Identification Number 83-1495913  
Entity Address Address Line1 444 West Lake Street  
Entity Address, Address Line Two Suite 1700  
Entity Address City Or Town Chicago  
Entity Address State Or Province IL  
Entity Address Postal Zip Code 60606  
City Area Code 312  
Local Phone Number 416-8592  
Entity Common Stock, Shares Outstanding   13,625,925
Security12b Title Common Stock, $0.0001 par value per share  
Security Exchange Name NYSE