Summary of Significant Accounting Policies (Details)		12 Months Ended
	Nov. 12, 2021 tranche trading_day $ / shares shares	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Jan. 01, 2022 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment		3
Impairment of long-lived assets held-for-use		$ 0	$ 0
Goodwill impairment charges		9,944,000	0
Impairment of intangible assets, finite-lived		$ 0	$ 0
Defined contribution plan, required service period		2 months
Employer matching contribution, percent of match		100.00%	100.00%
Employer matching contribution, percent of employees' gross pay		4.00%	4.00%
Defined contribution plan, cost		$ 1,108,000	$ 787,000
Operating right of use assets		24,494,000	0
Current portion of operating lease liabilities		5,498,000	0
Lease liabilities, noncurrent		22,060,000	0
Property and equipment, net		8,547,000	4,192,000
Total accrued expenses and other current liabilities		14,595,000	13,924,000
Other non-current liabilities		$ 868,000	$ 6,900,000
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Accrued expenses and other current liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other non-current liabilities
Legacy TOI Earnout Shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contingent consideration, liability (in shares) | shares	12,500,000
Number of tranches | tranche	2
Initial stock price threshold (in dollars per share) | $ / shares	$ 15.00
Earnout period	3 years
Threshold trading days | trading_day	20
Threshold trading day period | trading_day	30
Legacy TOI Earnout Shares | Derivative Instrument, Period, One
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contingent consideration, liability (in shares) | shares	5,000,000
Stock price trigger (in dollars per share) | $ / shares	$ 12.50
Legacy TOI Earnout Shares | Derivative Instrument, Period, Two
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contingent consideration, liability (in shares) | shares	7,500,000
DFPH Earnout Shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contingent consideration, liability (in shares) | shares	575,000
Number of tranches | tranche	2
Earnout period	3 years
Escrow deposit percentage	50.00%
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating right of use assets				$ 17,832,000
Current portion of operating lease liabilities				4,056,000
Lease liabilities, noncurrent				15,104,000
Property and equipment, net				43,000
Total accrued expenses and other current liabilities				19,000
Other non-current liabilities				$ 21,000