Cover
| Cover | Oct. 28, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 28, 2021 |
| Entity File Number | 001-39702 |
| Entity Registrant Name | HEALTH ASSURANCE ACQUISITION CORP. |
| Entity Central Index Key | 0001824013 |
| Entity Tax Identification Number | 85-2899745 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 20 University Road |
| Entity Address, City or Town | Cambridge |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02138 |
| City Area Code | 617 |
| Local Phone Number | 234-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| SAILSM (Stakeholder Aligned Initial Listing) securities, each consisting of one share of Class A Common Stock, $0.0001 par value, and one-fourth of one redeemable warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | SAIL |
| Trading Symbol | HAACU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock included as part of the SAIL |
| Trading Symbol | HAAC |
| Security Exchange Name | NASDAQ |
| Warrants included as part of the SAILSM securities, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants included as part of the SAIL |
| Trading Symbol | HAACW |
| Security Exchange Name | NASDAQ |