| Position | Organization | Time |
|---|
| Associate Professor | Department of Palliative Care and Rehabilitation, Division of Cancer Medicine | Present |
| Member | The University of Texas MD Anderson Cancer Center, Houston, TX, 2008-8 | 2011 - Present |
| Assistant Professor | Department of General Internal Medicine - Research, Division of Internal Medicine | Present |
| Member | The University of Texas M. D. Anderson Cancer Center, Houston, TX | 2004 - 2009 |
| Assistant Professor | Department of Palliative Care and Rehabilitation Medicine, Division of Cancer Medicine | Present |
| Member | The University of Texas M. D. Anderson Cancer Center, Houston, TX | 2001 - 2008 |
| Director | Selection Committee for Patricia Bohan Award for Excellence in Palliative Care | Present |
| Member | Nursing, Department of Palliative Care and Rehabilitation Medicine | Present |
| Member | The University of Texas MD Anderson Cancer Center, Houston, TX -present | 2007 - Present |
| Member | Outcomes Research Think Tank Committee | Present |
| Member | Department of Palliative Care and Rehabilitation Medicine | Present |
| Member | Palliative Care Research Committee | Present |
| Member | Department of Palliative Care and Rehabilitation Medicine, Division of Cancer Medicine | Present |
| Member | The University of Texas MD Anderson Cancer Center, Houston, TX | 2007 - 2014 |
| Member | Palliative Care Education Committee | Present |
| Member | The University of Texas M. D. Anderson Cancer Center, Houston, TX | 2007 - 2008 |
| Director | Acute Palliative Care Unit Committee | Present |
| Member | The University of Texas MD Anderson Cancer Center, Houston, TX, 2006-3 | 2010 - Present |
| Director | Department of Palliative Care and Rehabilitation Medicine | 2002 - 2010 |
| Member | Symptom Control and Palliative Care Center | Present |
| Member | Operations Committee | Present |
| Member | The University of Texas M. D. Anderson Cancer Center, Houston, TX | 2001 - Present |
| Member | Psychosocial, Behavioral, and Health Services Research Committee | 2010 - 2013 |
| Member | Spiritual Observance Committee | 2009 - 2012 |