If you are having a medical emergency, call 911.

Robyn Sunday-Allen

Chief Executive Officer

Robyn Sunday-Allen, Cherokee Nation, RN, MPH, is the CEO of the Oklahoma City Indian Clinic. Sunday-Allen attended the University of Oklahoma where she received her BA in Psychology, BSN in Nursing, and MPH in Health Administration and Policy. Robyn began her career at Oklahoma City Indian Clinic as an RN and became the Director of Nursing shortly thereafter.  She was promoted to the Chief Operating Officer position in 2001 and most recently appointed as the CEO in 2009.

Robyn is currently on the Board of Directors for the National Council of Urban Indian Health; Oklahoma State Chamber of Commerce and New View Oklahoma. She is a Graduate of Leadership Oklahoma City Class XXIX and Leadership Oklahoma Class XXVI.

Robyn has received many awards including Indian Health Service’s Lifetime Achievement Award, Luana Reyes Leadership Award, The Journal Record’s 50 Making a Difference Woman of the Year Honoree 2009, 2010, 2012; The Journal Record’s Oklahoma’s Most Admired CEO Honoree 2009-2011and was inducted as the first ever CEO in Oklahoma’s Circle of Excellence. In an Oklahoma Proclamation from Gov. Brad Henry declares November 14 Robyn Sunday-Allen Day.

Robyn is married to Russell and they have one son, Eli.

Dr. Max Burchett, Jr.

Chief Information Officer

Max Burchett, Jr., PharmD, MHA, earned his Masters in Healthcare Administration from Oklahoma State University and his Doctor of Pharmacy from Southwestern Oklahoma State University. Dr. Burchett had an extensive history in the public and private sector in information technology, telecommunications, healthcare and pharmacy when he came to Oklahoma City Indian Clinic from the IHS Oklahoma City Area Office in 2015. He began his career at Oklahoma City Indian Clinic as the Clinical Informatics Pharmacist and later added roles as the Clinical Application Coordinator and the Assistant Director of Pharmacy serving in those three roles until he was promoted to Chief Information Officer in 2021. 

Dr. Burchett is an examiner for the Quality Texas Foundation and is a member of multiple national organizations for pharmacy, quality and informatics. He also serves on several committees that are part of the IHS National Council of Informatics. Dr. Burchett is married with two children.

Dr. Janice Hixson

Chief Medical Officer

Janice Hixson, MD, Chickasaw Nation and Choctaw Nation of Oklahoma, was appointed Chief Medical Officer in August of 2019.

She has been a long standing employee of Oklahoma City Indian Clinic providing services for pediatrics since 2002. Dr. Hixson received her Bachelor’s of Science Degree in Biochemistry from Oklahoma City University and her Doctorate of Medicine from the University of Oklahoma College of Medicine. Thereafter, she received training in Pediatrics at Children’s Hospital of Oklahoma residency program. Dr. Hixson is Board Certified in Pediatrics by the American Board of Pediatrics. Dr. Hixson has six children and five grandchildren.

Monica Krienke

Chief Human Resources Officer

Monica Krienke, Choctaw Nation of Oklahoma, joined Oklahoma City Indian Clinic in July 2009 as Director of Human Resources. She was promoted to the Chief Human Resources Officer position in October 2013. Monica holds a Bachelor of Science degree in Management and Senior Professional Human Resources (SPHR) designation. Prior to joining OKCIC, Monica worked in Human Resources for a third party claims administrator and within the oil field industry. Monica has over 20 years of HR experience ranging from generalist to management.

Dr. Hazel Lonewolf

Chief Quality Officer

Hazel Lonewolf, DrPH, a member of the Kiowa Tribe of Oklahoma, earned her DrPH and MPH from the University of Oklahoma Health Sciences Center College of Public Health.  She received her Bachelor of Arts degree in Native American Studies and Government from Dartmouth College.  She joined the Oklahoma City Indian Clinic in 2007 as a Statistician and later took on the roles of Epidemiologist/Quality Improvement Coordinator, Quality Improvement Director and in 2016 was promoted to Chief Quality Officer.

Dr. Lonewolf serves as an examiner for the Oklahoma Quality Award Foundation.  She is a member of the National Association for Healthcare Quality, the Oklahoma Public Health Association, American Public Health Association, Oklahoma City Area Indian Health Service Institutional Review Board and the American Indian Data Community of Practice.

Lysa Ross

Chief Operating Officer

Lysa Ross attended the University of Central Oklahoma where she received her BS in Accounting and Masters in Business Administration. Lysa began her career at the Oklahoma City Indian Clinic in 2001 as an accountant and later took on the role of Assistant Finance Officer. She was promoted to the Chief Operating Officer position in March 2009.

Lysa holds a license as a Certified Public Accountant from the Oklahoma Accountancy Board. She also acts as the compliance officer for the Oklahoma City Indian Clinic, with the CHC (Certified in Healthcare Compliance) designation received through the Health Care Compliance Association in 2010

David Toahty

Chief Development Officer

David Toahty is the Chief Development Officer at the Oklahoma City Indian Clinic after being the Chief Finance Officer since 1997.  Toahty has over 45 years of diverse business administration experience including retail management, higher education administration, construction contracting, tribal governments and non-profit corporation.

Toahty is Pawnee/Kiowa/Creek/Cherokee and an enrolled member of the Pawnee Nation.  Toahty was born in Pawnee, OK and moved to Midwest City at an early age.  Toahty graduated high school as a Midwest City Bomber in 1975 and has spent the majority of his life in Oklahoma. Toahty attended and graduated from Rose State College and University of Central Oklahoma with a degree in Business while raising a family.  Toahty has taken graduate classes in Public Health Administration at the Oklahoma University Health Sciences Center.

Chris Van Ess

Chief Finance Officer

Chris Van Ess joined the Oklahoma City Indian Clinic in August of 2011.  Chris received a BS in Accounting from USAO and a Juris Doctorate degree from the Oklahoma City University School of Law.   He holds the designations of Certified Public Accountant and Certified Financial Examiner. Prior to joining the Clinic, Chris has primarily worked in finance and accounting in the insurance industry.  Chris and his wife, Sarah, have three children.

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