exhibit 10. 20 [ * * * * ] certain information on this page has been omitted and filed separately with the commission. confidential treatment has been requested with respect to the omitted portions. whiteglove house call health, inc effective date : 07 / 15 / 2009 july 1, 2009 robert fabbio whiteglove house call health, inc. 5300 bee cave road, building one, suite 100 austin, tx 78746 dear m. fabbio : effective july 15, 2009, aetna health inc. and whiteglove house call health, inc. entered into an agreement to provide health care services to members. after execution of the agreement, an issue was identified regarding missing language in the whiteglove service and compensation schedule, which requires formal clarification. service or language as indicated in the executed agreement clarification / modification clarification / modification missing definition for the aetna market fee schedule this letter serves as an amendment to the executed agreement, effective july 15, 2009, clarifying that the language above will be added to the whiteglove service and compensation schedule to reflect the intent of both parties during the negotiation. attached is an updated whiteglove service and compensation schedule. all other terms and provisions of the agreement not amended hereby shall remain in full force and effect. in the event of any inconsistency between the terms of this amendment and the agreement, the terms of this amendment shall govern and control. / s / robert fabbio / s / dave roberts whiteglove house call health, inc. whiteglove services and compensation schedule compensation : payment details : service billing codes rates cpt4 codes : 99214 cpt4 codes : 99212 cpt4 codes : 87880 cpt4 codes : 86308 ctp4 codes : 81025 cpt4 codes : 69210 cpt4 codes : 36415 cpt4 codes : 81002 cpt4 codes : 87804 cpt4 codes : 82947 cpt4 codes : 86677 cpt4 codes : 10060 cpt4 codes : 11740 cpt4 codes : 93000 [ * * * * ] certain information on this page has been omitted and filed separately with the commission. confidential treatment has been requested with respect to the omitted portions. page 2 of 8 whiteglove house call health, inc. cpt4 codes : 90718 cpt4