Assistant Clinical Professor of Obstetrics and Gynecology
Division of Maternal Fetal Medicine
Columbia University Medical Center
New York, New York

Fellowship, Combined Maternal Fetal Medicine
and Clinical Genetics
Wayne State University School of Medicine
Detroit, Michigan

• 1999-present American College of Obstetricians & Gynecologists
  • Junior Fellow, 1999-2007
  • Fellow, 2007-present
• 1999-present American Medical Association
• 2003-2009 Society for Maternal Fetal Medicine (Associate Member)
• 2003-present Central Association of Obstetrics & Gynecology (Adjunct Member)
• 2004-present American Society of Human Genetics
• 2005-present American College of Medical Genetics
• 2007-present North American Fetal Therapy Network
• 2009-present Society for Maternal Fetal Medicine (Regular Member)
• Global Health Committee, 2009-present (Member, Secretary)

• 1999-2007 Michigan State Medical Society

1. Hassan SS, Romero R, Hendler I, Gomez R, Khalek N, Espinoza J, Nien JK, Berry SM, Bujold E, Camacho N, Sorokin Y. A sonographic short cervix as the only clinical manifestation of intra-amniotic infection. Journal of Perinatal Medicine 34(1):13-19, 2006.
2. Hassan SS, Romero R, Haddad R, Hendler I, Khalek N, Tromp G, Diamond MP, Sorokin Y, Malone J. The transcriptome of the uterine cervix before and after spontaneous term parturition. American Journal of Obstetrics & Gynecology 195(3):778-786, Sept. 2006.
3. Segata M, Chaoui R, Khalek N, Bahado-Singh RO, Paidas MJ, Mari G. Fetal thrombocytopenia secondary to parvovirus infection. American Journal of Obstetrics & Gynecology 196:61e1-61.e4, Jan. 2007.
4. Galan I, DeLeon JA, Diaz I, Hong JS, Khalek N, Munoz-Fernandez MA, Santolaya-Forgas J. Effect of a bone marrow microenvironment on the ex-vivo expansion of umbilical cord blood progenitor cells. Clinical and Laboratory Hematology 29(1):58-63, Feb. 2007.
5. Hassan SS, Romero R, Tarca AL, Draghici S, Pineles B, Bugrim A, Khalek N, Camacho N, Mittal P, Yoon BH, Espinoza J, Kim CJ, Sorokin Y, Malone J Jr. Signature pathways identified from gene expression profiles in the human uterine cervix before and after spontaneous term parturition. American Journal of Obstetrics & Gynecology 197(3):250.e1-7, Sept. 2007.
6. Kusanovic JP, Espinoza J, Romero R, Goncalves LF, Nien JK, Soto E, Khalek N, Camacho N, Hendler I, Mittal P, Friel LA, Gotsch F, Erez O, Than NG, Mazaki-Tovi S, Schoen ML, Hassan SS. Clinical significance of the presence of amniotic fluid 'sludge' in asymptomatic patients at high risk for spontaneous preterm delivery. Ultrasound in Obstetrics & Gynecology 30(5):706-714, Oct. 2007.
7. Romero R, Kusanovic JP, Espinoza J, Goetsch F, Nhan-Chang CL, Erez O, Kim CJ, Khalek N, Mittal P, Goncalves LF, Schaudinn C, Hassan SS, Costerton JW. What is amniotic fluid 'sludge'? Ultrasound in Obstetrics & Gynecology 30(5):793-798, Oct. 2007.

1. Laifer-Narin SL, Khalek N, DeLaPaz RL. MR diagnosis of ischemia/infarct in the fetal brain: Spectrum of appearance and significance of findings. Poster presentation at the 18th World Congress on Ultrasound in Obstetrics & Gynecology, Chicago, IL, Aug. 24-28, 2008.
2. Laifer-Narin SL, Khalek N, DeLaPaz RL. Prenatal MR evaluation of the fetus with a vein of Galen malformation: A series of five cases. Poster presentation at the 18th World Congress on Ultrasound in Obstetrics & Gynecology, Chicago, IL, Aug. 24-28, 2008.

1. Khalek N. Obstetrics and gynecology. Chap. 9 in Ryan MW (ed): USMLE Step 3 Recall. Philadelphia: Lippincott Williams & Wilkins, 2003, 272-274.
2. Jenkins T, Khalek N, Wapner RJ. Prenatal diagnosis of congenital disorders. Chap. 17 in Creasy RK, Resnick R, Iams J (eds): Maternal-Fetal Medicine: Principles and Practice, 6th Edition. Philadelphia: WB Saunders Co., 2009, 221-274.
3. Rychik J, Tian Z, Bebbington M, Moldenhauer J, Khalek N, Johnson M. Response to “Evaluation of the cardiovascular system in twin-twin transfusion syndrome: It's not about 'scores' but about 'goals'.” [Letter] Ultrasound in Obstetrics & Gynecology 36(5):647-648, Nov. 2010.