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Meet Our Providers


Chief Medical Officer

Ching Wang, MD, FACP

Location: Internal Medicine, North Yuma
Specialty: Internal Medicine
Med School: Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil, graduated December 1989
Residency: New York Methodist Hospital in Brooklyn, NY, completed training June 1995
Certification: Board certified with the American Board of Internal Medicine, 1996, re-certified in 2016
Preceptor: South University School of Nursing, Midwestern University
Joined Sunset August 1996

Associate Medical Director 

Saika Somjee, MD

Location: Somerton Pediatric Clinic
Specialty: Pediatrics / Pediatric Hematology - Oncology
Med School: Seth G. S. Medical College, Mumbai, India, graduated June 1993
Residency: Louisiana State University Health Science Center Metaire, LA, completed training June 2007
Fellowship: Pediatric Hematology-Oncology, Louisiana State University Health Science, Metaire, LA, completed training June 2005
Certification: Board certified with the American Board of Pediatrics, 2007. Board certified with the American Sub-Board of Pediatric Hematology-Oncology, 2009
Preceptor: Northern Arizona University.
Academic Appointment- Director of Pediatrics Clinical Education Outpatient, YRMC Family Medicine Residency Program
Joined Sunset July 2007

 Certified Nurse Midwife 

 
Delia Montopoli, CNM, MSN, OGNP-C

Location: Sunset Women's Medical Group - Yuma and San Luis Clinic
Specialty: Certified Nurse Midwife / Health Nurse Practitioner
School: University of Chile School of Medicine, Santiago, Chile, completed training 1976
University of Wyoming School of Nursing
Laramie, WY, completed Master degree 1995
Certification: Board certified with American Midwifery Certification Board, 1995
Board certified with the National Certification Corporation for the Obstetric, Gynecologic and Neonatal Nursing Specialties.
Master Degree in Nursing Education, 1993
Preceptor: Frontier Nursing University, Georgetown Nursing University, Midwestern University, Northern Arizona University, Maryville University
Joined Sunset March 1996
 
 
Karina M. Robbins, CNM

Location: Sunset Women’s Medical Group - Yuma Clinic
Specialty: Certified Nurse Midwife
School: University of Utah, Salt Lake City, Utah, completed May 2008
Certification: Board certified with American Midwifery Certification Board, 2008. Preceptor: Frontier University
Preceptor: Frontier University
Joined Sunset August 2014

Family Medicine  

Sathya Vemuri, MD

Location: Yuma North Clinic
Specialty: Family Medicine
Med School: Gandhi Medical College, Hyderabad, India, graduated January 1996
Residency: St Joseph Hospital and Medical Center, Paterson, NJ, completed training June 2002
Certification: Board certified with the American Board of Family Medicine, 2002, re-certified in 2009
Joined Sunset August 2002
 
Pamela Sharp, FNP-BC

Location: Somerton Clinic - Extended Hours
Specialty: Family Nurse Practitioner
School: Regis University, Denver, CO, graduated May 2014
Certification: Board certified with American Nurses Credential Center, 2014
Joined Sunset September 2014
 
Katelyn Squire, PA-C

Location: San Luis Clinic.
Specialty: Physician Assistant / Family Medicine
School: Midwestern University, Glendale, AZ, graduated August 2014
Certification: Board certified with the National Commission on Certification of Physician Assistant, 2014
Preceptor: Midwestern University
Joined Sunset September 2014
 
Richard A. Scott , FNP-C, DC

Location:
Wellton Clinic
Specialty: Family Nurse Practitioner
School: Maryville University, St. Louis, MO, graduated August 2015
Certification: Board certified with the American Academy of Nurse Practitioners, 2015
Joined Sunset November 2015
  
 

 Thomas Culwell, PA-C

Location: Somerton Clinic
Specialty: Physician Assistant
School: Midwestern University, Glendale, AZ, graduated August 2011
Certification: Board certified with the National Commission on Certification of Physician Assistant, 2011
Joined Sunset October 2016

 

Temika Sutton, MSN, FNP-C
Location: San Luis Clinic
Specialty:  Family Nurse Practitioner
School:  Olivet Nazarene University, Bourbonnais, IL, graduated in June 2015
Certification:  Board certified with the American Academy of Nurse Practitioners, 2015
Joined Sunset March 2017

  

General Dentistry

Satish Kumar, DDS

Location: Somerton Dental Clinic
Specialty: General Dentistry
Dental School: Government Dental College and Hospital, Amristar, India, graduated April 1979
Joined Sunset March 1993
 

Miriam Gonzalez, DMD

Location: San Luis Dental Clinic
Specialty: General Dentistry
Dental School: Midwestern University College of Dental Medicine, Glendale, AZ, graduated June 2016
Joined Sunset August 2016

 

Debbie Grund, RDH


Location:  Somerton Dental Clinic
Specialty: Dental Hygienist
Dental School: Portland Community College, Portland, OR, graduated June 1987
Joined Sunset March 2017

 

 

Internal Medicine 

Maria Fereira-Caroz, MD

Location: Somerton Internal Medicine Clinic
Specialty: Internal Medicine
Med School: University of  Zulia, Maracaibo, Venezuela, graduated December 2003
Residency: Morehouse School of Medicine, Atlanta, GA, completed training June 2014
Certification: Board certified with the American Board of Internal Medicine, 2014
Joined Sunset November 2014
 
Oliver Severino, MD

Location: San Luis Internal Medicine Clinic
Specialty: Internal Medicine
Med School: University of the Philippines, Manila, Philippines, graduated May 2000
Residency: The Jewish Hospital of Cincinnati, Cincinnati, OH, completed training June 2005
Certification: Board certified with the American Board of Internal Medicine, 2005, re-certified 2015
Joined Sunset August 2005
 
Ana Marie Rivera, MSN, FNP-C

Location: Yuma Internal Medicine Clinic
Specialty: Family Nurse Practitioner
School: University of Arizona, Tucson, AZ, graduated 2004
Certification: Board certified with the American Academy of Nurse Practitioner, 2004
Joined Sunset December 2013
 
 
 

Irene A. Bird, FNP-C

Location: Yuma Internal Clinic
Specialty: Family Nurse Practitioner
School:  University of Arizona, Tucson, AZ, graduated May 2013
Certification: Board certified with the American Academy of Nurse practitioners, 2013
Joined Sunset November 2016

  
 

Rabia Khan, FNP-C

Location: North Yuma Clinic
Specialty: Family Nurse Practitioner
School: Georgetown University, Washington, DC, graduated December 2015
Certification: Board certified with the American Academy of Nurse Practitioners, 2016
Joined Sunset March 2016

 
 

Valerie Gomez, FNP-C

Location: Yuma Internal Medicine Clinic
Specialty: Family Nurse Practitioner
School:  Arizona State University, Tempe, AZ, graduated 1995
Certification:  Board certified with the American Nurses Credentialing Center, 1995
Joined Sunset January 2017

 
 

Robert Allen, MD

Location: Yuma Internal Medicine clinic
Specialty:  Family Practice
Med School:  University of Manitoba, Winnipeg, Manitoba, Canada, graduated 1974
Residency: Department of Health Province of British Columbia, British Columbia, Canada, completed training August 1974
Certification:  Board Certified with the American Board of Family Medicine, 1990, re-certified in 2008.  Board Certified with the American Board of Addiction Medicine, 2009, re-certified in 2014
Joined Sunset April 2017

 

Obstetrics and Gynecology 

Terry A. Lewis, MD, FACOG

Location: Sunset Women’s Medical Group - Yuma Clinic
Specialty: Obstetrics and Gynecology
Med School: University of New Mexico, Albuquerque, NM, graduated 1974
Certification: Board certified with the American Board of Obstetrics and Gynecology, 1981
Residency: Naval Regional Medical Center, Oakland, California, 1978
Joined Sunset February 2014
 
Angel R. Temponi Zabala, MD

Location: Sunset Women’s Medical Group - Yuma and San Luis Clinic
Specialty: Obstetrics and Gynecology
Med School: Emory University School of Medicine, Atlanta, GA, graduated June 2014
Residency: Emory University School of Gynecology and Obstetrics, graduated June 2014
Certification: Board Eligible
Preceptor: Walden University, Indiana State University, Grand Canyon University College of Nursing, Northern Arizona University
Joined Sunset July 2014

Pediatrics

Raymond Hatton, MD

Location: Yuma Pediatric Clinic
Specialty: Pediatrics
Med School: University of Louisville Medical School, Louisville, KY, graduated June 1970
Residency: Medical College of Ohio, Akron, OH, completed training December 1975
Certification: Board certified with the American Academy of Pediatrics, 1977, re-certified 2012
Joined Sunset August 1998
 
Ahmad Ashfaq, MD

Location: San Luis Pediatric Clinic
Specialty: Pediatrics
Med School: King Edward Medical College, Lahore, Punjab, Pakistan, graduated April 2006
Residency: Harlem Hospital Center, Columbia University Medical Center, New York, NY, completed training June 2013
Certification: Board certified with the American Board of Pediatrics, 2014
Preceptor: South University School of Nursing
Joined Sunset September 2013
 
Mwela N. Asombang, MD

Location: Yuma Pediatric Clinic
Specialty: Pediatrics
Med School: Kasturba Medical College, Karnataka, India, graduated March 2005
Residency: Cardinal Glennon Children’s Medical Center, Saint Louis University School of Medicine, St. Louis, Missouri, completed training June 2013
Certification: Board certified with the American Board of Pediatrics, 2014
Joined Sunset September 2013
 

Adil I. Baig, MD

Location: North Yuma Clinic
Specialty: Pediatrics
Med School: King Edward Medical University, Lahore, Pakistan, graduated April 2008
Residency: Metropolitan Hospital Center, New York Medical College, New York, NY, completed training June 2016
Certification: Board Eligible
Joined Sunset August 2016

Jay Kumar, MD

Location: Yuma Pediatric Clinic
Specialty: Pediatrics
Med School: Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan, graduated February 2006
Residency: Metropolitan Hospital Center, New York Medical College, New York, NY, completed training June 2016
Certification: Board Eligible
Joined Sunset August 2016 

Mohamed Nagiub, MD

Location: North Yuma Clinic
Specialty: Pediatrics / Pediatric Cardiology
Med School: University of Alexandria, Alexandria, Egypt, graduated October 2000
Residency: St. John Providence Children Hospital, Detroit, MI, completed training August 2013
Fellowship: Richmond Children Hospital at VCU, Richmond, VA, completed training August 2016
Certification: Board certified with the American Board of Pediatrics, 2013. Board certified with the American Board of Pediatrics Cardiology, 2016
Joined Sunset September 2016

 

Amy C. Wise, C-PNP

Location: School-based Clinics
Specialty: Pediatric Nurse Practitioner
School: Vanderbilt University, Nashville, TN, graduated July 2016
Certification: Pediatric Nursing Certification Board, 2016
Joined Sunset December 2016

 

Behavioral Health

Keli A. Osborn, LMSW

Location: North Yuma Clinic
Specialty: Behavioral Health Provider
School: University of Michigan, Ann Arbor MI, graduated August 2014
Certification: State of Arizona Board of Behavioral Health, 2015
Joined Sunset August 2015

 

Judith Gomez

Location: San Luis Clinic
Specialty: Licensed Associate Counselor
School: Northern Arizona University, Yuma AZ, graduated December 2011
Certification: State of Arizona Board of Behavioral Health, 2017
Joined Sunset November 2015

 

Cynthia Rivas

Location: North Yuma Clinic
Specialty: Behavioral Health Technician
School: Northern Arizona University, Yuma AZ, graduated August 2007
Joined Sunset November 2015

 

Erika Gomez

Location: North Yuma Clinic
Specialty: Behavioral Health Technician
School: California State University, Long Beach, CA, graduated December 2012.
Joined Sunset May 2017

 
  

Locations / Hours

Click here for detailed contact information and hours of operation.

SAN LUIS MEDICAL
Medical: (928) 627-3822
Pharmacy: (928) 373-5757
Click here to view map
SAN LUIS DENTAL
Dental: (928) 627-8584
Click here to view map
YUMA MEDICAL
Medical: (928) 819-8999
Pharmacy: (928) 819-8941
Click here to view map
NORTH YUMA MEDICAL
Medical: (928) 539-3140
Click here to view map
SOMERTON MEDICAL
Medical: (928) 627-2051
Pharmacy: (928) 627-1607
Click here to view map
SOMERTON DENTAL
Dental: (928) 627-8806
Click here to view map
WELLTON MEDICAL
Medical: (928) 785-3256
Pharmacy: (928) 785-3256
Click here to view map
WELLTON DENTAL
Medical: (928) 785-8808
Click here to view map

Locations

Yuma - 24th St building-yuma24 2060 W. 24th Street
Yuma, AZ 85364
(928) 819-8999 - Medical
(928) 819-8941 - Pharmacy
Review on Google Click here for map
North Yuma building-yumaB 675 S. Avenue B
Yuma, AZ 85364
(928) 539-3140
Review on Google Click here for map
Somerton building-somerton 115 N. Somerton Avenue
PO Box 538
Somerton, AZ 85350
(928) 627-2051 - Medical
(928) 627-8806 - Dental
(928) 627-1607 - Pharmacy
Review on Google Click here for map
San Luis building-sanluis 815 E. Juan Sánchez Blvd.
PO Box 2017
San Luis, AZ 85349
(928) 627-3822 - Medical
(928) 373-5757 - Pharmacy
Review on Google Click here for map
San Luis Dental building-sanluis 801 N. 2nd Avenue
PO Box 2017
San Luis, AZ 85349
(928) 627-8584
Review on Google Click here for map
Wellton building-wellton 10425 Williams Street
P.O. Box 686
Wellton, AZ 85356
(928) 785-3256 Medical
(928) 785-8008 Dental
(928) 785-3256 Pharmacy
Review on Google Click here for map