Oscar A. Viteri, MD – OB/GYN – Maternal Fetal Medicine – Sioux Falls, SD 57105
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Oscar A. Viteri

Oscar A. Viteri, MD, FACOG

Obstetrics/Gynecology, Perinatology, and Maternal-Fetal Medicine

“My ultimate goal when taking care of moms with high-risk pregnancies is to provide evidence-based medical care in a safe and comfortable environment.“

Office Information

About Me

If you need high-risk pregnancy care, count on the experience and expertise of Oscar A. Viteri, MD, a perinatologist at Avera Medical Group Maternal-Fetal Medicine in Sioux Falls, SD.

Expert & Compassionate Care for High-Risk Pregnancy

Dr. Viteri specializes in caring for expectant mothers who are carrying multiples (twins, triplets, etc.) or those who have a history of pregnancy loss, premature labor, previous pregnancy complications or special health concerns such as diabetes or high blood pressure.

Advanced Technology

With extensive training and research in obstetrics, maternal-fetal medicine and genetics, Dr. Viteri uses the latest in technology to manage high-risk pregnancies, and diagnose and prevent or correct complications prior to delivery. He offers:

“Medicine is not just a job, but a vocation – a way of life to serve others in their time of need,” describes Dr. Viteri. “Whether it’s by handing over a newborn baby to a mother’s arms, to delivering unexpected news from an ultrasound while developing a plan of care, I’m humbled to serve and improve someone’s life, regardless of the circumstances.”

Dr. Viteri also speaks fluent Spanish, Portuguese, French and conversational Italian.

Active Lifestyle

Dr. Viteri and his wife, who were both born and raised in Ecuador, South America, have two children. “As a good South American, we enjoy playing soccer,” he laughs. “I also like spending time with my family outdoors, especially fishing, hiking and traveling.”

Dr. Viteri also enjoys playing and composing music on the piano and guitar.



Universidad Internacional del Ecuador, Quito, Ecuador, Medical School


McGovern Medical School at the University of Texas Health Science Center, Houston, Obstetrics & Gynecology


McGovern Medical School at the University of Texas Health Science Center, Houston, Maternal Fetal Medicine

Teaching or Professional Positions

Several oral presentations at National and International Conferences

Professional Memberships

  • American College of Obstetricians and Gynecologists
  • Society for Maternal-Fetal Medicine
  • International Society for Ultrasound in Obstetrics and Gynecology
  • American Medical Association

Honors, Awards, etc.

  • Obstetrics & Gynecology Editor’s Picks, October 2017
  • American Journal of Obstetrics and Gynecology Editor’s Choice, March 2015
  • Junior Fellow Vice-Chair (2014) and Chair (2015), The American College of Obstetricians and Gynecologists District XI – Section 4
  • Outstanding Student and Resident Educator Awards, Department of OB/GYN at University of Texas Health Science Center at Houston
  • Central Association of Obstetricians & Gynecologists “President’s Certificate of Merit Award”
  • Society for Maternal-Fetal Medicine Resident Award for Excellence in Obstetrics
  • Graduation with Honors, Universidad Internacional del Ecuador School of Medicine


  • American Board of Obstetrics and Gynecology
  • Educational Commission for Foreign Medical Graduates (ECFMG)


  • South Dakota Board of Medical and Ostheopatic Examiners
  • Iowa Board of Medicine
  • Minnesota Board of Medical Practice
  • Texas Medical Board

Medical Research & Clinical Trials

  • Torsemide for the Prevention of Persistent Postpartum Hypertension in Preeclamptic Women (TROPHY Trial): A Randomized, Placebo-Controlled Trial ClinicalTrials.gov: NCT02813551
  • The Efficacy of Transcervical Foley Balloon Plus Vaginal Misoprostol Versus Vaginal Misoprostol Alone for Cervical Ripening in Nulliparous Obese Women (CROWN Trial): A Multicenter Randomized Comparative-Effectiveness Trial ClinicalTrials.gov: NCT02639429

Relevant Peer-Reviewed Publications

Dr. Viteri’s PubMed Link to Publications:

  • Shah JS, Roman T, Viteri OA, Haidar ZA, Ontiveros AE, Sibai BM. The Relationship of Assisted Reproductive Technology on Perinatal Outcomes in Triplet Gestations. Am J Perinatol. 2018. Epub ahead of print
  • Shah JS, Viteri OA, Longo M, Abdallah M, Sibai BM. Twin Gestation in a Swyer Syndrome Patient with Superimposed Preeclampsia. J Obstet Gynaecol. 2018 Feb;8:1-2
  • Viteri OA, Sallman MA, Berens PM, Berens PD, Amro FH, Hutchinson MS, Ramin SM, Blackwell SC, Refuerzo JR, Smith JA. Potential of Metformin to Improve Cardiac Risk in Postpartum Women with Gestational Diabetes. Front Med (Laussanne). 2017 Oct 30;4:180
  • Haidar ZA, Viteri OA, Nasab SH, Moussa HN, Sibai BM, Whitty JE. Composite Neonatal and Maternal Morbidities with Small- Versus Appropriate- for Gestational Age Among Uncomplicated Obese Women Undergoing Repeat Cesarean Delivery. J Matern Fetal Neonatal Med. 2017 Oct 10:1-6
  • Viteri OA, Sibai BM. Uterine Balloon Tamponade for the Management of Postpartum Haemorrhage: A Challenge and an Opportunity for Better Evidence. BJOG. 2017. Epub ahead of print
  • Viteri OA, England JA, Alrais MA, Lash KA, Villegas MI, Ashimi Balogun OA, Chauhan SP, Sibai BM. Effect of Non-Steroidal Anti-Inflammatory Drugs on Postpartum Hypertension in Preeclampsia. Obstet Gynecol. 2017 Oct;130(4):830-835
  • Haidar ZA, Papanna R, Sibai BM, Tatevian N, Viteri OA, Vowels PC, Blackwell SC, Moise KJ. Can 3-dimensional power Doppler indices improve the prenatal diagnosis of a potentially morbidly adherent placenta in patients with placenta previa? Am J Obstet Gynecol. 2017 Aug;217(2):202.e1-202.e13
  • Viteri OA, Blackwell SC, Chauhan SP, Refuerzo JS, Pedroza C, Salazar XC, Sibai BM. Antenatal Corticosteroids for the Prevention of Respiratory Distress Syndrome in Preterm Twins. Obstet Gynecol. 2016 Sep;128(3):583-91.
  • Viteri OA, Dinis J, Roman T, Sibai BM. Timing of Medically Indicated Delivery in Diabetic Pregnancies: A Perspective on Current Evidence-Based Recommendations. Am J Perinatol. 2016 Jul;33(9):821-5.
  • Viteri OA, Mendez-Figueroa H, Pedroza C, Leon MG, Sibai BM, Chauhan SP. The Relationship Between Self-Reported Maternal Substance Abuse and Adverse Outcomes in the Premature Newborn. Am J Perinatol. 2016 Jan;33(2):165-71.
  • Viteri OA, Whitty JE, Salazar XC, Refuerzo JS. Maternal and Infant Implications of Excessive Gestational Weight Gain Among Obese Pregnant Women. J Endocrinol Diabetes Obes. 2015 Apr;3(2):1068.
  • Refuerzo JS, Viteri OA, Hutchinson MS, Pedroza C, Blackwell SC, Tyson JE, Ramin SM. The Effects of Metformin on Weight Loss in Women with Gestational Diabetes: A Pilot Randomized, Placebo-Controlled Trial. Am J Obstet Gynecol. 2015; Mar;212(3):389.e1-9.
  • Leon MG, Moussa HN, Movahedian M, Viteri OA, Longo M, Sibai BM. A Rapidly Growing Abdominal Mass: Desmoid Tumor in Pregnancy. AJP Rep. 2015; Apr;5(1):e14-7.
  • Viteri OA, Soto EE, Bahado-Singh RO, Christensen CW, Chauhan SP, Sibai BM. Fetal Anomalies and Long-Term Effects Associated with Substance Abuse in Pregnancy: A Literature Review. Am J Perinatol. 2015 Apr;32(5): 405-16.
  • Mendez-Figueroa H, Dahlke J, Viteri OA, Chauhan S, Sibai B, Blackwell S. Neonatal and Infant Outcomes in Twin Gestations with Preterm Premature Rupture of Membranes at 24 to 31 Weeks. Obstet Gynecol. 2014 Aug;124(2 Pt 1):323-31.
  • Sibai BM, Viteri OA. Diabetic Ketoacidosis in Pregnancy. Obstet Gynecol. 2014 Jan;123(1):167-178 Clinical Expert Series.
  • Pizzonia J, Holmberg J, Orton S, Alvero A, Viteri O, McLaugling W, Feke G, Mor G. Multimodality Animal Rotation Imaging System (Mars) for In-Vivo Detection of Intraperitoneal Tumors. Am J Reprod Immunol. 2012 Jan;67(1):84-90.
  • Endara SA, Dávalos GA, Zamora G, Benítez FJ, Dávalos PA, Viteri OA. Disección de Arteria Braquio-Cefálica Secundaria a Trauma Penetrante de Pared Torácica: Reporte de un Caso. Rev Arg Cir Cardiovasc. 2010 May;8(2):112-116
  • Porras L, Jaramillo G, Montalvo N, Viteri O. Cystoadenoma de Apéndice: Diagnóstico Diferencial de Masa Anexial Derecha. Rev Metro Ciencia. 2007 Nov;16(3):382-387

Oral Presentations at National and International Conferences

  • Viteri OA, Blackwell SC, Pedroza C, Chauhan SP, Sibai BM. Torsemide for the Prevention of Persistent Postpartum Hypertension in Preeclamptic Women (TROPHY Trial): A Randomized, Placebo-Controlled Trial. Presented as Oral Plenary at the Society for Maternal-Fetal Medicine (SMFM) 38th Annual Meeting. Dallas, TX 2018
  • Viteri OA, England JE, Lash KA, Villegas MI, Ashimi Balogun OA, Chauhan SP, Sibai BM. Should Non-Steroidal Anti-Inflammatory Drugs be Avoided in Puerperal Hypertensive Women? Presented as Oral Plenary at The Society for Maternal-Fetal Medicine (SMFM) 37th Annual Meeting. Las Vegas, NV 2017
  • Viteri OA, Hammad IA, Villegas MI, El Masry PR, Chauhan SP, Sibai BM. Applicability of International Guideline Recommendations for Postcesarean Thromboprophylaxis. Presented in Oral Conference at The Central Association of Obstetricians and Gynecologists (CAOG) 83rd Annual Meeting. Las Vegas, NV 2016
  • Viteri OA, Mendez-Figueroa H, Pedroza C, Leon MG, Sibai BM, Chauhan SP. Perinatal Outcomes Among Preterm Births With and Without Substance Abuse. Presented in Oral Conference at The Central Association of Obstetricians and Gynecologists (CAOG) 81st Annual Meeting. Albuquerque, NM 2014
  • Refuerzo JS, Viteri OA, Hutchinson MS, Smith JA, Blackwell SC, Ramin SM. The Effects of Metformin on Retained Postpartum Weight in Women with Gestational Diabetes: A Randomized, Placebo-Controlled Trial. Presented in Oral Conference at The Central Association of Obstetricians and Gynecologists (CAOG) 81st Annual Meeting. Albuquerque, NM 2014

Book Chapters

  • Diabetic Ketoacidosis in Pregnancy
    Villegas MI, Viteri OA
    Obstetrics and Gynecology Morning Report: Beyond the Pearls, 1st Edition, Elsevier, 2018
  • Fetal Macrosomia
    Viteri OA, Chauhan SP
    Maternal-Fetal Evidence Based Guidelines, 3rd Edition, CRC Press, 2017
  • Anticoncepción Hormonal y no Hormonal en la Lactancia
    Córdova S, Porras L, Viteri O, Salgado S, Noboa E, Bucheli JR.
    Anticoncepción Hormonal. Federación Latinoamericana de Sociedades de Climaterio y Menopausia (FLACSYM), 2010

Editorial Activities

  • Reviewer, Nature Scientific Reports
  • Reviewer, British Journal of Obstetrics and Gynaecology: An International Journal of Obstetrics and Gynaecology
  • Reviewer, American Journal of Perinatology
  • Reviewer, Journal of Maternal, Fetal and Neonatal Medicine
  • Reviewer, Drug and Alcohol Dependence: An International Journal on Biomedical and Psychosocial Approaches
  • Reviewer, Trials

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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