28 Tex. Admin. Code § 11.1601
If an HMO allows physicians or providers to require that enrollees present an identification (ID) card in order to receive services, that HMO shall issue to an enrollee an ID card within 30 calendar days of receiving notice of the enrollee's designation of a primary care physician. The enrollee ID card will include, at a minimum, all necessary information to allow an enrollee to access all services under the certificate or evidence of coverage which require presentation of the card.
Source Note:The provisions of this §11.1601 adopted to be effective November 2, 1998, 23 TexReg 11347.