As you have asked about the list of the Third Party Administrators (TPA) of Insurance Regulatory and Development of India (IRDAI), I am giving you information about it, check below for the details

United Healthcare Parekh TPA Pvt. Ltd.
Medi Assist India TPA Pvt. Ltd.
MD India Healthcare (TPA) Services (Pvt.) Ltd.
Paramount Health Services (TPA) Pvt. Ltd.
E Meditek (TPA) Services Ltd.
Heritage Health TPA Pvt. Ltd.
Focus Healthservices TPA Pvt. Ltd.
Medicare TPA Services (I) Pvt. Ltd.
Family Health Plan (TPA) Ltd.
Raksha TPA Pvt. Ltd.
Vidal Health TPA Private Limited
Anyuta TPA in Healthcare Pvt. Ltd.
East West Assist TPA Pvt. Ltd.
Med Save Health Care TPA Ltd.
Genins India TPA Ltd.
Alankit Health Care TPA Limited
Health India TPA Services Private Limited
Good Health TPA Services Ltd.
Vipul Med Corp TPA. Pvt. Ltd.
Park Mediclaim TPA Private Ltd.
Safeway TPA Services Pvt. Ltd
Anmol Medicare TPA Ltd.
Dedicated Healthcare Services TPA (India) Private Limited,
Grand Health Care TPA Services Private Limited
Rothshield Healthcare (TPA) Services Limited
Sri Gokulam Health Services TPA (P) Ltd.
Spurthi Meditech TPA Solutions Pvt. Ltd.
Happy Insurance TPA Pvt. Ltd.
Ericson TPA Healthcare Pvt. Ltd.
Health Insurance TPA of India Ltd.