STATE OF TENNESSEE Tre Hargett, Secretary of State Division of Business Services William R. Snodgrass Tower 312 Rosa L. Parks AVE, 6th FL Nashville, TN 37243-1102 Filing Information Name: LENSGRAF CLINIC, PC. General Information Control # : Filing Type: Filing Date: Status: Duration Term: 58462 Corporation For-Profit - Domestic 11/26/1976 4:30 PM Active Perpetual Formation Locale: Knox County Date Formed: 11/26/1976 Fiscal Year Close 12 Registered Agent Address A DOUGLAS LENSGRAF 1346 PAPERMILL PT WAY KNOXVILLE, TN 37909-1903 Principal Address 1346 PAPERMILL POINT WAY KNOXVILLE, TN 37909 The following document(s) was/were filed in this office on the date(s) indicated below: Date Filed Filing Description Image # A0054-1496 6767-2458 01/20/2011 2010 Annual Report 09/09/2010 Assumed Name New Assumed Name Changed From: No Value To: Knoxville Pain Center 09/09/2010 Assumed Name New Assumed Name Changed From: No Value To: Knoxville Pain Associates 03/23/2010 2009 Annual Report 03/11/2010 Assumed Name New Assumed Name Changed From: No Value To: Pain Institute of Knoxville 03/26/2009 2008 Annual Report 10/16/2008 Assumed Name 03/20/2008 2007 Annual Report 03/29/2007 2006 Annual Report 11/21/2006 Assumed Name Renewal 05/10/2006 Assumed Name 04/17/2006 Assumed Name 04/05/2006 2005 Annual Report 03/18/2005 2004 Annual Report 6767-2460 A0012-0672 6673-0710 6491-1391 6390-1465 6256-1229 6009-0842 5892-2275 5789-0144 5770-1353 5755-1837 5396-1000 of 2 Page 1 Filing Information Name: LENSGRAF CLINIC, PC. 5396-1000 5074-0927 03/18/2005 2004 Annual Report 03/19/2004 2003 Annual Report Registered Agent Physical Address Changed Mail Address Changed 07/01/2003 Amended and Restated Formation Documents Shares of Stock Changed Principal Address Changed Registered Agent Physical Address Changed 01/24/2003 2002 Annual Report 03/01/2002 2001 Annual Report 12/11/2001 Assumed Name 01/29/2001 2000 Annual Report 03/27/2000 1999 Annual Report Mail Address Changed 02/20/1992 CMS Annual Report Update Principal Address Changed Mail Address Changed 06/16/1990 Administrative Amendment Fiscal Year Close Changed 03/07/1990 Administrative Amendment Mail Address Changed 10/16/1985 Articles of Amendment Name Changed 05/03/1985 Reinstatement 03/21/1985 Reinstatement 10/31/1984 Dissolution/Revocation - Administrative 01/26/1984 Reinstatement 06/14/1983 Dissolution/Revocation - Revenue 11/26/1976 Initial Filing Active Assumed Names (if any) Knoxville Pain Associates Knoxville Pain Center Pain Institute of Knoxville LENSGRAF CLINIC AND MEDICAL CENTER BACK PAIN INSTITUTE OF KNOXVILLE, P.C. 4853-0155 4707-1350 4432-0374 4365-0348 4106-1110 3862-2310 2382-1440 FYC/REVENU E 1665-0758A 571 00190 540 03332 530 02901 501 02063 459 02273 409 00999 BC13P6557 Date 09/09/2010 09/09/2010 03/15/2010 10/16/2008 12/11/2006 Expires 09/09/2015 09/09/2015 03/11/2015 10/16/2013 12/11/2011 Page 2 of 2