Marco Ruiz, MD, MPH

Associate Professor of Clinical Medicine  
Sections of Infectious Diseases 
Section of Geriatric Medicine

Associate Director
Geriatric Medicine Fellowship Program

Department of Medicine
Section of Infectious Disease
136 South Roman St., 2nd floor
New Orleans, LA  70112
Phone:  504-903-2926
Fax:     504-903-5313


M.D. -- 1994
Universidad Nacional Mayor de San Marcos
Lima, Peru

M.P.H. -- 1998
Health University of Leeds
Leeds, UK


Dr. Ruiz is an Assistant Professor of Clinical Medicine and the Associate Director for the Geriatric Medicine Fellowship Program. He is board certified in Internal Medicine, Geriatric Medicine, and Infectious Diseases. Dr. Ruiz is an active member of the Association of Directors of Geriatric Academic Programs (ADGAP) of the American Geriatrics Society. He is a faculty member of the Stanley Scott Cancer Center and the Geriatric Medicine and Infectious Disease sections in the LSU School of Medicine. Dr. Ruiz is a National Cancer Institute investigator and team leader in the Non-AIDS defining malignancies section of the AIDS Malignancies Consortium. He is well-published and serves as Editorial Board member for numerous journals. His research efforts have focused on geriatrics issues in elderly HIV-infected patients and the aging process in HIV-positive individuals. His research expertise also includes malignancies in senior populations and the suitability of senior patients for chemotherapy treatments. Other research interests include frailty syndrome in geriatric medicine and palliative care interventions in senior patients with cancer.

Research Interests

Non-AIDS defining cancers
Geriatric Oncology
Aging process in HIV-infected patients
Public health in resource-limited settings

Teaching Activities

Associate Director 
Geriatric Medicine Fellowship Program
LSU School of Medicine, New Orleans

Selected Publications

Ruiz M, Kamerman LA.. Nutritional Screening Tools for HIV-Infected Patients: Implications for Elderly Patients. Journal of the International Association in AIDS care. 2010 Dec; 9(6): 362-367. Cited in PubMed; PMID: PMID: 21138832.

Ruiz Marco. Lung cancer in HIV-infected patients: the experience of an urban clinic.. Journal of the International Association of Physician in AIDS care. 2010 Aug; 9(4): 12-17. Cited in PubMed; PMID: 20798400.

Ruiz Marco. Early lung cancer detection in HIV: the role of CT screening in high risk cases. HIV clinician. 2010 Mar; 22(1): 1-5. Cited in PubMed; PMID: 20333820.

Ruiz M. Cancer of unknown primary site is on the increase in HIV-infected populations. HIV clinician. 2009 Jul; 21(2): 1-7. Cited in PubMed; PMID: 19517619.

Ruiz M. Certain non-AIDS-defining cancers higher in HIV population. HIV clinician. 2009 Oct; 21(4): 13-16. Cited in PubMed; PMID: 20034132.

Ruiz M, Briones Chavez C, Vasquez Choy AL. The Use of An Innovative Health Promotion/Education Technique in the Poorest Area of Peru: A Descriptive Analysis. The International Journal of Environmental, Cultural, Economic and Social Sustainability. 2010 Apr; 6(4): 147-156.

Ruiz M, Briones Chavez C. Healthcare Issues among Undocumented Latino Immigrants Infected with HIV in New Orleans. The International Journal of Environmental, Cultural, Economic and Social Sustainability. 2010 Apr; 6(4): 137-146.

Ruiz M, Briones-Chavez CS. How to improve the health of undocumented Latino immigrants with HIV in New Orleans: an agenda for action.. Journal of the Pan American Health Organization. 2010 Jul; 28(1): 66-70. Cited in PubMed; PMID: 20857023.

Ruiz M, Cefalu C. Palliative Care Program For Human Immunodeficiency Virus-Infected Patients: Rebuilding of an Academic Urban Program.. The American Journal of Hospice and Palliative Care. 2010 Jun; June(10.1177/104990911037): online first. Cited in PubMed; PMID: 20543161.

Ruiz M, Cefalu C, Ogbuokiri J.. A dedicated screening program for geriatric HIV-infected patients integrating HIV and geriatric care.. Jounal of the International Associatin of physicians in AIDS care. 2010 Jun; 9(3): 157-161. Cited in PubMed; PMID: 20530469.

Ruiz M, Chávez CB. Rabies in Latin America. Neurological research. 2010 Apr; 32(3): 272-277. Cited in PubMed; PMID: 20406605.

Ruiz M, Dargis J.. Are HSV infections more prevalent in older HIV+ patients?. HIV Clinician. 2010 Dec; 22(15): 12-15. Cited in PubMed; PMID: 21132925.