Oklahoma City Indian Clinic > About > Administration


Robyn Sunday-Allen, Chief Executive Officer

Robyn S.Robyn Sunday-Allen, Cherokee, RN, MPH, is the CEO of the Oklahoma City Indian Clinic. She and her staff of over 165 nurses, physicians and support staff provide comprehensive medical and behavioral health services to all tribal members in central Oklahoma.

Sunday-Allen earned her bachelor’s degrees in psychology and nursing as well as a master of public health degree from the University of Oklahoma. She joined the Oklahoma City Indian Clinic in 1995 as a registered nurse. She was subsequently promoted to nurse manager of health services in 1997, to chief operating officer in 2001, and to chief executive officer in early 2009. She is a member of the Oklahoma Nurses Association and the Oklahoma Public Health Association.

When it was announced that Sunday-Allen was to be the CEO, Dr. Everett Rhoades, president of the Oklahoma City Indian Clinic’s board of directors, said this about Sunday-Allen, “She is not only an experienced nurse with a masters degree in public health administration, but has also gained national recognition for several programs that improved the clinic and the services it provides.”

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 30 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 a very early age where he helped in the family business.  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.

Toahty has been married for over 30 years with two adult children.  Toahty served as chairman for the Johnson-O’Malley program in the Mid-Del School system for the years of 1995-1998.  Toahty has been active in youth ice hockey in Oklahoma City from 1997-2004.  Toahty served as President of Oklahoma City Youth Hockey Association in 2004.  Toahty has volunteered with the Oklahoma City AIDS Day Memorial Service and supporter of the Oklahoma AIDS Care Fund Red Tie Night.

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.


Daniel Molina, MD, Chief Medical Officer 

Daniel_M_CMOCommander, United States Public Health Service
Indian Health Service
Physician, Family Medicine

In addition to serving as Chief Medical Officer, Daniel Molina, MD leads the BLUE Care Team.  It specializes in providing full spectrum primary health care services for the entire family from adolescence to geriatrics, with special emphasis to care of diabetes, women’s health, and general preventive health care services.


Monica Tippit, Chief Human Resources Officer

Monica-Tippit CHROMonica Tippit, Choctaw, joined the 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 the Clinic, 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.



Hazel Lonewolf, Chief Quality Officer

OLYMPUS DIGITAL CAMERAHazel 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.