Power of Attorney

I, Steven L. List, the undersigned, hereby constitute and appoint Stanton Nelson, Edward M. Carriero, Jr., and Robert E. Puopolo, and each of them individually, as my true and lawful attorney-in-fact to:

1. Complete and execute on my behalf, as an executive officer and/or director of Graymark Healthcare, Inc., an Oklahoma corporation (the “Company”), Forms 3, 4, or 5 required to be filed by me under Section 16(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and the rules and regulations thereunder;

2. Do and perform any and all acts for and on my behalf which may be necessary or desirable to complete and execute any such Forms 3, 4 or 5 and timely file such forms with the U.S. Securities and Exchange Commission and any stock exchange or similar authority; and

3. Take any other action of any type whatsoever in connection with the foregoing, which in the opinion of such attorney-in-fact may be of benefit to, in the best interest of, or legally required by me, it being understood that the documents executed by such attorney-in-fact on my behalf pursuant to this Power of Attorney shall be in such form and shall contain such information as such attorney-in-fact may approve in such attorney-in-fact’s discretion.

I hereby grant to each such attorney-in-fact full power and authority to do and perform all and every act which is necessary, proper or desirable to be done in the exercise of any of the rights, powers and authority granted in this Power of Attorney, with full power of substitution and revocation, and I hereby ratify and confirm every act that such attorney-in-fact lawfully performs or causes to be done by virtue of this Power of Attorney and the powers and authority granted herein.

I acknowledge that each such attorney-in-fact appointed in this Power of Attorney, in serving in such capacity at my request, is not assuming, and the Company is not assuming, any of my responsibilities to comply with Section 16 of the Exchange Act or the rules or regulations thereunder.

This Power of Attorney shall remain in full force and effect until I am no longer required to file Forms 3, 4 or 5 with respect to my holdings or transactions in securities issued by the Company, unless I earlier revoke this Power of Attorney in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of May 14, 2012.

/s/ Steven L. List
Steven L. List

List Steven L 4