EXHIBIT 3.3 [STAMP APPEARS HERE] ARTICLES OF ORGANIZATION OF AMARILLO ACUTE DIALYSIS SPECIALISTS, L.L.C. -------------------------------------------- ARTICLE ONE The name of the limited liability company is AMARILLO ACUTE DIALYSIS SPECIALISTS, L.L.C. ARTICLE TWO The period of duration of the Company shall be perpetual or until the termination of the company in accordance with regulations of the company. ARTICLE THREE The purpose for which the company is organized is the transaction of any and all lawful business for which limited liability companies may be organized under the Texas Limited Liability Company Act. ARTICLE FOUR The registered agent of the limited liability company is CT Corporation System and the address of its registered office in the State is c/o CT Corporation System, 350 N. St. Paul Street, Dallas, Texas 75201. ARTICLE FIVE The names and addresses of the members are as follows: Name Address ---- ------- Martin Fox 6300 E. El Dorado Plaza, Suite 100 Tucson, Arizona 85715 Thomas Creel 1113 Furlong Drive, Libertyville, Illinois 60048 The management of the Company will be vested in the members, the Company will not have managers. ARTICLE SIX The name and addressee of the organizer is as follows: Name Address ---- ------- Kimberley E. Bender 150 North Michigan Avenue Suite 3100 Chicago, IL 60601 IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of May, 1995. /s/ Kimberley E. Bender ------------------------- ARTICLES OF AMENDMENT TO THE ARTICLES OF ORGANIZATION OF AMARILLO ACUTE DIALYSIS SPECIALISTS, L.L.C. ------------------------------------------- Pursuant to the provisions of Article 3.06 of the Texas Limited Liability Company Act (the "Act"), the undersigned company adopts the following Articles of Amendment to its Articles of Organization: ARTICLE I The name of the limited liability company is: AMARILLO ACUTE DIALYSIS SPECIALISTS, L.L.C. ARTICLE II ARTICLE FIVE of the Articles of Organization is hereby amended so as to read as follows: The name and address of the sole member are as follows: HOME DIALYSIS OF AMERICA, INC. 6300 E. El Dorado Plaza, Suite 100 Tucson, AZ 85715 ARTICLE III The amendment to the Articles of Organization set forth in Article II above was approved and adopted by the members of the company pursuant Section D of Article 2.23 of the Act on May 24, 1995. Dated: March 20, 1996. AMARILLO ACUTE DIALYSIS SPECIALISTS, L.L.C. By: HOME DIALYSIS OF AMERICA, INC. By: /s/ Martin Fox ------------------------------ Its: President