EXHIBIT 3.11 ARTICLES OF ORGANIZATION OF DIALYSIS SPECIALISTS OF SOUTH TEXAS, L.L.C ------------------------------------------ ARTICLE ONE The name of the limited liability company is DIALYSIS SPECIALISTS OF SOUTH TEXAS, 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 CORRECTION The undersigned submits these articles pursuant to Texas Civil Statutes article 1302701 to correct a document which is an inaccurate record of the entry action, contains an inaccurate or erroneous statement, or was defectively or erroneously executed, sealed acknowledged, or verified. ARTICLE ONE The name of the entity is Dialysis Specialists of South Texas, L.L.C. ARTICLE TWO The document to be corrected is the Articles of Organization which was filed in the Office of the Secretary of State on the 24th day of May, 1995. ARTICLE THREE The inaccuracy, error, or defect to be corrected is: Article five incorrectly lists only 2 members, wherein 3 members should have been listed at the time of organization. ARTICLE FOUR As corrected, the inaccurate, erroneous, or defective portion of the document reads as follows: See attached By: /s/ Martin Fox ----------------------------------. Martin Fox Its Member ---------------------------------------. An Authorized Corporate Officer or Director or Limited Liability Company Member or Manager Forms Articles of Correction for Corporate and Limited Liability Companies Attachment A to Article Four of the Statement of Correction ----------------------------------------------------------- As corrected, the inaccurate, erroneous, or defective portion of the document reads as follows: 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 William Shaffer 1521 S. Staples, Suite 401 Corpus Christi, Texas 78404 ARTICLES OF AMENDMENT TO THE ARTICLES OF ORGANIZATION OF DIALYSIS SPECIALISTS OF SOUTH TEXAS, 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: DIALYSIS SPECIALISTS OF SOUTH TEXAS, L.L.C. ARTICLE II ARTICLE FIVE of the Articles of Organization is hereby amended so as to read as follows: The names and addresses of the members are as follows: Name Address ---- ------- HOME DIALYSIS OF AMERICA, INC. 6300 E. E1 Dorado Plaza Suite 100 Tucson, AZ 85715 William L. Shaffer, M.D. 1521 S. Staples Suite 401 Corpus Christi, TX 78404 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 July 1, 1995. Dated: March 20, 1996. DIALYSIS SPECIALISTS OF SOUTH TEXAS, L.L.C. By: HOME DIALYSIS OF AMERICA, INC. By: /s/ Martin Fox ----------------------------------- Its: President OFFICE OF THE [SEAL] CORPORATIONS SECTION SECRETARY OF STATE P.O. Box 13697 Austin, Texas 78711-3697 STATEMENT OF CHANGE OF REGISTERED OFFICE OR REGISTERED AGENT OR BOTH BY A CORPORATION LIMITED LIABILITY COMPANY OR LIMITED PARTNERSHIP 1. The name of the entity is Dialysis Specialists of South Texas, L.L.C. The entity's charter/certificate of authority/file number is 07012084. 2. The registered office address as PRESENTLY shown in the records of the Texas secretary of state is: 350 N. St. Paul Street, Dallas, Taxes 75201. 3. A. X The address of the NEW registered office is: (Please provide street --- address, city, state and zip code. The address must be in Texas.) 4606 FM 1960 W, Suite 400, Houston, Texas 77069. OR B.___ The registered office address will not change. 4. The name of the registered agent as PRESENTLY shown in the records of the Texas secretary of state is CT Corporation. 5. A. X The name of the NEW registered agent is Anthony Unruh. --- OR B.___ The registered agent will not change. 6. Following the changes shown above, the address of the registered office and the address of the office of the registered agent will continue to be identical, as required by law. 7. The changes shown above were authorized by: Business Corporations may select A or B Limited Liability Companies may Non-Profit Corporations may select select D or E A, B, or C Limited Partnerships select F A.___ The board of directors; OR B.___ An officer of the corporation so authorized by the board of directors; OR C.___ The members of the corporation in whom management of the corporation is vested pursuant to article 2.14C of the Texas Non-Profit Corporation Act. D. X Its members --- E.___ Its managers F.___ The limited partnership HOME DIALYSIS OF AMERICA, INC. By: /s/ John B. Bourke, C.F.O. ----------------------------------- (Authorized Member of LLC) (TEXAS - 2231 - 12/28/95) [SEAL] ASSUMED NAME CERTIFICATE 1. The name of the corporation, limited liability company, limited partnership, or registered limited liability partnership as stated in its articles of incorporation, articles of organization, certificate of limited partnership, application or comparable document is Dialysis Specialists of South Texas, L.L.C. 2. The assumed name under which the business or professional service is or is to be conducted or rendered is Beeville Dialysis Center. 3. The state, country, or other jurisdiction under the laws of which it was incorporated, organized or associated is Texas, and the address of its registered or similar office in that jurisdiction is See Paragraph 6 below. 4. The period, not to exceed 10 years, during which the assumed name will be used is 10 years. 5. The entity is a (circle one): business corporation, non-profit corporation, professional corporation, professional association, limited liability company, limited partnership, registered limited liability partnership or some other type of incorporated business, professional or other association (specify) Limited Liability Company. 6. If the entity is required to maintain a registered office in Texas, the address of the registered office is 4606 FM 1960 W, Suite 400, Houston, Texas 77069 and the name of its registered agent at such address is Anthony Unruh. The address of the principal office (if not the same as the registered office) is 13434 Up River Road, Suite A-17, Corpus Christi, Texas. 7. If the entity is not required to or does not maintain a registered office in Texas, the office address in Texas is___________________________________ and if the entity is not incorporated, organized or associated under the laws of Texas, the address of its place of business in Texas is ___________ ___________________________ and the office address elsewhere is ___________ __________________________________________________________________________. 8. The county or counties where business or professional services are being or are to be conducted or rendered under such assumed name are (if applicable, use the designation "ALL" or "ALL EXCEPT"). All. (Certificate must be executed and notarized on the back of this form.) HOME DIALYSIS OF AMERICA By: /s/ John B. Bourke ------------------------------ Signature of Member, Dialysis Specialists of South Texas Before me on this 11th day of October, 1996, personally appeared John B. Bourke and acknowledged to me that ____ he executed the foregoing certificate for the purposes therein expressed. (Notary Seal) /s/ Patricia L'Odense ----------------------------------------- Notary Public, STATE OF ILLINOIS INSTRUCTIONS FOR FILING ASSUMED NAME CERTIFICATE 1. A corporation, limited liability company, limited partnership or registered limited liability partnership, which regularly conducts business or renders a professional service in this state under a name other than the name contained in its articles of incorporation, articles of organization, certificate of limited partnership or application, must file an assumed name certificate with the secretary of state and with the appropriate county clerk in accordance with section 36.11 of the Texas Business and Commerce Code. 2. The information provided in paragraph 6 as regards the registered agent and registered office address in Texas must match the information on file in this office. To verify the information on file with this office, you may contact our corporate information unit at (512) 463-5555. Forms to change the registered agent/office are available from this office should you require to update this information. 3. A certificate executed and acknowledged by an attorney-in-fact shall include a statement that the attorney-in-fact has been duly authorized in writing by his principal to execute and acknowledge the same. 4. For purposes of filing with the secretary of state, the assumed name registrant should submit an originally executed assumed name certificate accompanied by the filing fee of $25 to the Secretary of State, Statutory Filings Division, Corporations Section, P.O. Box 13697, Austin, Texas 78711-3697. The Phone number is (512) 463-5582, TDD: (800) 735-2989, FAX: (512) 463-5709. 5. All assumed name certificates to be filed with the county clerk must be forwarded directly to the appropriate county clerk by the assumed name registrant. 6. Whenever an event occurs that causes the information in the assumed name certificate to become materially misleading (eg. change of registered agent/office or a change of name), a new certificate must be filed within 60 days after the occurrence of the events which necessitate the filing. 7. A registrant that ceases to transact business or render professional services under an assumed name for which a certificate has been filed may file an abandonment of use pursuant to the Texas Business and Commerce Code, (S)36.14. Forms for this purposes are available from this office. [SEAL] ASSUMED NAME CERTIFICATE 1. The name of the corporation, limited liability company, limited partnership, or registered limited liability partnership as stated in its articles of incorporation, articles of organization, certificate of limited partnership, application or comparable document is DIALYSIS SPECIALISTS OF SOUTH TEXAS, L.L.C. 2. The assumed name under which the business or professional service is or is to be conducted or rendered is DIALYSIS SPECIALISTS OF RIVERSIDE. 3. The state, country, or other jurisdiction under the laws of which it was incorporated, organized or associated is TEXAS, and the address of its registered or similar office in that jurisdiction is 4606 FM 1960 W, Suite 400, Houston, Texas 77069. 4. The period, not to exceed 10 years, during which the assumed name will be used is 10 years. 5. The entity is a (circle one): business corporation, non-profit corporation, professional corporation, professional association, limited liability company, limited partnership, registered limited liability partnership or some other type of incorporated business, professional or other association (specify) Limited Liability Company. 6. If the entity is required to maintain a registered office in Texas, the address of the registered office is 4606 FM 1960 W, Suite 400, Houston, Texas 77069 and the name of its registered agent at such address is Anthony Unruh. The address of the principal office (if not the same as the registered office) is 13434 Up River Road Suite A-17, Corpus Christi, Texas. 7. If the entity is not required to or does not maintain a registered office in Texas, the office address in Texas is N/A and if the entity is not incorporated, organized or associated under the laws of Texas, the address of its place of business in Texas is ______________________________________ and the office address elsewhere is ______________________________________. 8. The county or counties where business or professional services are being or are to be conducted or rendered under such assumed name are (if applicable, use the designation "ALL" or "ALL EXCEPT"): All. (Certificate must be executed and notarized on the back of this form.) /s/ William L. Shaffer ------------------------------------------------ Signature of officer, general partner, manager, representative or attorney-in-fact of the entity Before me on this 3 day of 12, 1996, personally appeared WILLIAM L. SHAFFER and acknowledged to me that ____ he executed the foregoing certificate for the purposes therein expressed. [Notary Seal] /s/ Louisa M. Gomez -------------------------------------------------- Notary Public, State of Texas INSTRUCTIONS FOR FILING ASSUMED NAME CERTIFICATE 1. A corporation, limited liability company, limited partnership or registered limited liability partnership, which regularly conducts business or renders a professional service in this state under a name other than the name contained in its articles of incorporation, articles of organization, certificate of limited partnership or application, must file an assumed name certificate with the secretary of state and with the appropriate county clerk in accordance with section 36.11 of the Texas Business and Commerce Code. 2. The information provided in paragraph 6 as regards the registered agent and registered office address in Texas must match the information on file in this office. To verify the information on file with this office, you may contact our corporate information unit at (512) 463-5555. Forms to change the registered agent/office are available from this office should you require to update this information. 3. A certificate executed and acknowledged by an attorney-in-fact shall include a statement that the attorney-in-fact has been duly authorized in writing by his principal to execute and acknowledge the same. 4. For purposes of filing with the secretary of state, the assumed name registrant should submit an originally executed assumed name certificate accompanied by the filing fee of $25 to the Secretary of State, Statutory Filings Division, Corporations Section, P.O. Box 13697, Austin, Texas 78711-3697. The phone number is (512) 463-5582, TDD: (800) 735-2989, FAX: (512) 463-5709. 5. All assumed name certificates to be filed with the county clerk must be forwarded directly to the appropriate county clerk by the assumed name registrant. 6. Whenever an event occurs that causes the information in the assumed name certificate to become materially misleading (eg. change of registered agent/office or a change of name), a new certificate must be filed within 60 days after the occurrence of the events which necessitate the filing. 7. A registrant that ceases to transact business or render professional services under an assumed name for which a certificate has been filed may file an abandonment of use pursuant to the Texas Business and Commerce Code, (S)36.14. Forms for this purposes are available from this office.