Faculty

All WMMC residencies are responsible to Leroy Reese, M.D., Associate Dean for the White Memorial Medical Center campus of the Loma Linda University School of Medicine.

All Family Medicine faculty teach in the Family Health Center and attend on the Family Medicine Service.

Full-time Faculty 

 

Luis Samaniego, M.D., Program Director
Birthplace: Los Angeles, CA   
Medical School: University of Southern California  
Residency: Kaiser Permanente Medical Center, Los Angeles 
Certification: American Board of Family Medicine, 1984; Recertification, 2013
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine 
Responsibilities: Responsible for the overall design and administration of the residency program, as well as teaching in hospital clinical and conference settings.


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Hector Flores, M.D., Co-Director 

Birthplace: Veracruz, Mexico  
Medical School: University of California, Davis
Residency: Kaiser Permanente Medical Center, Los Angeles 
Certification: American Board of Family Medicine, 1985; Recertification, 2007
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Designs, coordinates, teaches and administers special teaching elements in quality improvement, utilization management, risk management, practice management, research, and fellowship activities.



 
Mauricio Bueno, M.D., Director, Inpatient Service 
Birthplace:  Los Angeles, CA 
Medical School: University of Southern California
Residency: USC/Presbyterian Intercommunity Hospital 
Certification: American Board of Family Medicine, 1986; Recertification, 2007
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine 
Responsibilities: Coordinates and evaluates inpatient training, including ascertaining that the experiences of family medicine residents on other specialty inpatient services are appropriate for family physicians. 


 
Edward Castro, M.D., Director, Ambulatory Care
Birthplace: Los Angeles, CA
Medical School: University of California, San Diego
Residency: Cook County Hospital
Certification: American Board of Family Medicine, 1986; Recertification, 2006
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Directs the ambulatory care training for residents in the Family Health Center and outpatient quality improvement activities. 


 
Andrew Chan, M.D., Director, Geriatric Service 
Birthplace: Los Angeles, CA
Medical School: Medical College of Wisconsin
Residency: White Memorial Medical Center, Los Angeles
Fellowship: Geriatric Medicine, UCLA
Certification: American Board of Internal Medicine, 1988; Geriatric Medicine, 2010​
Faculty: Assistant Clinical Professor, USC School of Medicine, Keck School of Medicine. 
Responsibilities: Coordinates, teaches and evaluates the geriatric rotation and longitudinal curriculum including Geriatric Assessment Unit, Nursing home, and home visits. 


 
 
 

Emma Guerrero, LCSW, Faculty, Behavioral Science 

Birthplace: Los Angeles, CA
Graduate School: University of California, Los Angeles​
Certification: Licensed Clinical Social Worker, 1978; recertified 2012
Responsibilities: Assists the Family Medicine Residency Program and Family Health Center in the assessment, diagnosis, treatment planning and psychotherapy for patients including crisis assessment and intervention. 


 
Alma Lopez, M.D., Faculty, Newborn Nursery and Outpatient Medicine                
Birthplace: Northridge, CA 
Medical School: University of California, Los Angeles
Residency: White Memorial Medical Center
Certification: American Board of Family Medicine, 2009
Faculty: Medical Education Fellowship Keck School of Medicine, 2011
Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Coordinates, teaches and evaluates the Newborn Nursery rotation. Assists in recruitment for the Family Medicine Residency Program. Coordinates the medical student clerkship program. Teaches medical students and residents in the outpatient clinic. 



Cynthia Lopez, M.D., Director, Women's Health
Birthplace: Manila, Philippines 
Medical School: University of California, Los Angeles
Residency: White Memorial Medical Center
Certification: American Board of Family Medicine, 1995; Recertification, 2010
Faculty: Assistant Clinical Professor, USC, School of Medicine, Department of Family Medicine
Responsibilities: Coordinates, teaches and evaluates the longitudinal women’s health curriculum and the gynecology rotations. 



Daniel Maldonado, M.D., Faculty, Family Medicine Service
Birthplace: Torrance, CA
Medical School: University of California, Los Angeles
Residency: White Memorial Medical Center
Certification: American Board of Family Medicine, 2001; Recertification, 2009
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Faculty for the Inpatient Family Medicine Service.


 
 

Jorge Martinez, M.D., Faculty, Outpatient Medicine

Birthplace: San Luis Potosi, Mexico 
Medical School: University of California, Los Angeles 
Residency: Harbor-UCLA Medical Center 
Certification: American Board of Family Medicine, 2003; Recertification 2010
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Faculty for the Inpatient Family Medicine Service; Faculty Preceptor for the Family Medicine Procedure Clinic.


 
Gilbert Medina, M.D., Faculty, Outpatient Medicine  
Birthplace: Los Angeles, CA 
Medical School: New York University
Residency: White Memorial Medical Center
Certification: American Board of Family Medicine, 2010
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine
Responsibilities: Teaches residents and medical students in the outpatient clinic, specifically in areas of process improvement and quality improvement. Project Lead for Patient Centered Medical Home (PCMH).


 
Armando Pacheco, M.D., Faculty, Family Medicine Service
Birthplace: Los Angeles, CA 
Medical School: University of California, San Diego
Residency: White Memorial Medical Center
Certification: American Board of Family Medicine, 1995; Recertification, 2009
Faculty: Assistant Clinical Professor, USC School of Medicine, Department of Family Medicine 
Responsibilities: Faculty for the Inpatient Family Medicine Service. Coordinates and evaluates sports medicine rotations and serves as a team physician for a local football team. 


 
Lucila Tarin, M.D., Faculty, Outpatient Medicine
Birthplace: Los Angeles, CA
Medical School:  Medical College of Wisconsin
Residency: USC/California Hospital Medical Center
Certification: American Board of Family Medicine, 2003; Recertified, 2013
Responsibilities: Faculty and Preceptor for the Family Health Center. Coordinates and teaches research curriculum and supervises resident scholarly projects. 


 
Sergio Villegas, M.D., Faculty, Outpatient Medicine
Birthplace: San Gabriel, CA 
Medical School: University of California, Davis 
Residency: White Memorial Medical Center 
Certification: American Board of Family Medicine, 1991; Recertification, 2013


Additional Support

Ramesh Manchanda, M.D.

Specialty: Internal Medicine, Nephrology
Responsibilities: Faculty for Family Medicine Service

Roybal Mental Health Facility

A large faculty of behaviorists are drawn upon to teach family medicine residents in areas which range from substance abuse and adolescent medicine to family counseling and independent living for the aged and for those with chronic mental illness.

Institutional Faculty

All coordinators provide consultants from their respective specialties and appropriate subspecialties to provide round-the-clock back-up for the Family Medicine Service, as well as consultants for specialty clinics, didactic conferences, and special workshops and other learning experiences.

Coordinator of Adult Medicine Training 

Juan Barrio, M.D., Director of Internal Medicine Residency Program, coordinating with the Family Medicine Director of Inpatient Training, ensures rigorous medical subspecialty educational experience with case selection appropriate for family medicine training. This intensive experience largely occurs on the teaching floors, the special units, and consultation services, augmented by appropriate clinics and didactic presentations, many of which coordinate with the Family Medicine curriculum.

Coordinator of Emergency Medicine Training 

John Plosay, M.D., Chief of Emergency Services, coordinates the emergency room training of Family Medicine residents. 

Coordinator of General Surgical Training 

Faisal Khan, M.D., Department of Surgery, coordinates all aspects of surgical training for family medicine residents with the Family Medicine Director of Inpatient Training. This includes ambulatory and office surgery, the hospital and operating room experience, didactic instruction, and developing the full role of the family physician in the surgical process, including the primary care physician-consultant relationship.

Coordinator of Obstetrics Training 

Cinna Wohlmuth, M.D., Director of Obstetrics and Gynecology Residency Program, in conjunction with the Family Medicine Director of Woman's Health, assures that the goals and objectives of the Family Medicine Residency curriculum in OB/GYN are fully met. Instruction is provided by both obstetricians and family physicians. This busy service quickly provides the basic skills that family medicine residents require to care for obstetrical patients in the Family Health Center. Specialty consultation in OB/GYN is available, in-house, 24 hours a day.

Coordinator of Pediatric Training 

Ernie Guzman, M.D., Pediatric Department, coordinates with family medicine faculty in providing and evaluating an intensive training program in pediatrics appropriate for Family Medicine residents.  A large segment of this program is outpatient-based. Inpatient experiences are supervised by Loma Linda Hospitalists and senior house officers. 

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