John Ilagan, M.D.,M.Sc.,FACOG

Maternal & Fetal Medicine
Accepting New Patients
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Dr. Ilagan is dually board-certified in Obstetrics & Gynecology and Maternal-Fetal Medicine. In his practice, he performs obstetric ultrasounds and prenatal diagnostic procedures. His areas of interest include prenatal genetics, thrombophilia in pregnancy, and obstetric epidemiology. He also serves as the Medical Director of the Antepartum Unit at Morgan Stanley Children’s Hospital.

Dr. Ilagan received both his undergraduate and medical degree from Wayne State University in Detroit, MI. He completed an Obstetrics & Gynecology residency at the Hospital of the University of Pennsylvania in Philadelphia, PA and a fellowship in Maternal-Fetal Medicine at Albert Einstein/Montefiore Medical Center in Bronx, NY. Dr. Ilagan went on to obtain a Master of Science degree in Epidemiology at Columbia University Mailman School of Public Health in New York, NY, and he is currently completing his Master of Science degree in Medical Education at the University of Pennsylvania. Dr. Ilagan received a Top Doctor Award for providing excellent patient care in 2017.

Areas of Expertise / Conditions Treated

  • Abnormal Prenatal Diagnosis
  • Advanced Fetal Ultrasound
  • Cervical Insufficiency
  • Fetal Anomalies
  • Fetal Diagnosis
  • Fetal Testing
  • High Risk Pregnancy
  • Maternal-Fetal Ultrasound
  • Medical Complications In Pregnancy
  • Multiple Pregnancy
  • Prenatal Diagnosis
  • Transabdominal Cervical Cerclage (TAC)
  • Transvaginal Cervical Cerclage

Academic Appointments

  • Assistant Professor of Ob/Gyn at CUIMC

Administrative Titles

  • Medical Director of the Antepartum Unit, Sloane Hospital for Women, NYP/Morgan Stanley Children's Hospital of New York at CUIMC
  • Director, MFM Elective and Medical Student Advanced Clinical OBGYN Electives

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center
  • NewYork-Presbyterian Westchester
  • NewYork-Presbyterian Hudson Valley Hospital


  • English


  • Male

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51 West 51st Street
New York, NY 10019

Insurance Accepted


  • Aetna Signature Administrators
  • EPO
  • HMO
  • Medicare Managed Care
  • NYP Employee Plan
  • NY Signature
  • POS
  • PPO
  • Student Health

Affinity Health Plan

  • Essential Plan
  • Medicaid Managed Care


  • Medicare Managed Care
  • Special Needs

Amida Care

  • Special Needs


  • EPO
  • Great West (National)
  • HMO
  • Medicare Managed Care
  • POS
  • PPO


  • Medicare Managed Care
  • PPO


  • ConnectiCare
  • EPO
  • Essential Plan
  • HMO
  • Medicaid Managed Care
  • Medicare Managed Care
  • POS
  • PPO
  • Select Care (Exchange)
  • Vytra

Empire Blue Cross/Blue Shield

  • EPO
  • HMO
  • Medicare Managed Care
  • PPO

Empire Blue Cross Blue Shield HealthPlus

  • Child/Family Health Plus
  • Essential Plan
  • Medicaid Managed Care

Fidelis Care

  • Child/Family Health Plus
  • Essential Plan
  • Medicaid Managed Care
  • Medicare Managed Care


  • Child/Family Health Plus
  • Leaf (Exchange)
  • Medicaid Managed Care
  • Medicare Managed Care

Local 1199

  • Local 1199

MagnaCare (National)

  • MagnaCare


  • Railroad
  • Traditional Medicare


  • Multiplan

MVP Health Care

  • Child/Family Health Plus
  • Essential Plan
  • HMO
  • Medicaid Managed Care
  • MVP Health Care-HMO/EPO (Westchester Only)
  • MVP Health Care-PPO (Westchester Only)

Quality Health Management

  • Quality Health Management


  • Special Needs




  • Compass (Exchange)
  • Empire Plan
  • HMO
  • Medicaid (Community Plan)
  • Medicare Managed Care
  • Oxford Freedom
  • Oxford HMO
  • Oxford Liberty
  • POS
  • PPO


  • Medicare Managed Care
  • SelectHealth
  • Special Needs


  • Medicaid Managed Care
  • Medicare Managed Care

World Trade Center Health Plan

  • World Trade Center Health Plan

*Please contact the provider’s office directly to verify that your particular insurance is accepted.

Credentials & Experience

Education & Training

  • Wayne State University / School of Medicine
  • Residency: Columbia
  • Residency: Hospital of the University of Pennsylvania
  • Fellowship: Harvard Medical School/ Dana-Farber Cancer Institute
  • Fellowship: Columbia
  • Fellowship: Albert Einstein / Montefiore Medical Center

Board Certifications

  • Maternal-Fetal Medicine
  • Obstetrics and Gynecology
NY Top Doctor


Selected Publications

1. Chung Y, Choi D, Ilagan J,  Lee J, Yoon Y. Clinical characteristics and outcomes of pregnant women with COVID-19 in a Korean cohort during the first wave. J Korean med Sci Oct 25; 36 (41):e290, 2021.

2. Vallejo V, Shan W, Ilagan JG, Goldberg G. Marijuana use in reproductive age and recurrent bacterial vaginosis. J Reprod Med 66(5): 245-255, 2021. 

3. Kapulsky L, Christos P, Ilagan J, Kocsis J. The Effects of Ibuprofen Consumption on the Incidence of Postpartum Depression. Clin Neuropharmacol. 44(4):117-122, July/August 2021.

4. Vajello V, Ilagan J.G. A Postpartum Death Due to Coronavirus Disease 2019 (COVID-19) in the United States. Obstet Gynecol, 136(1):52-55, 2020.

5. Bengualid V, Ilagan J and Berger J, Vertical transmission of HIV-1 in a patient with a rapid decrease in HIV-1 viral load. NY Med J 7(1), Winter 2013.

6. Ram KT, Goffman D, Ilagan J, Dar P First Trimester diagnosis of familial split-hand/split-foot malformation. J Ultrasound Med 28(10):1397-400, 2009.

7. Ilagan, J.G., Wilson, R.D., Johnson, M.P., Hedrick, H.L., Flake, A.W., Bebbington, M., Adzick, N.S. Pregnancy outcomes following bipolar umbilical cord cauterization for selective termination in complicated monochorionic multiple gestations. Fetal Diagn Ther, 23:145–150, 2008.


8. Ilagan, J.G., Stamilio, D.M., Ural, S.H., Macones, G.M., Odibo, A.O. Abnormal multiple marker screens are predictive of adverse perinatal outcomes in cases of intrauterine growth restriction. Am J Obstet Gynecol, 191(4): 1465-9, 2004.

9. Weber, G.F., Bronson, R.T., Ilagan, J., Cantor, H., Schmits, R., Mak, T.W., Absence of the CD44 gene prevents sarcoma metastasis. Cancer Res 62:2281-2286, 2002.

10. Ilagan, J.G., Cvekl, A., Kantorow, M., Piatigorsky, J., Sax, C.M., Regulation of alpha A-crystallin gene expression. Lens specificity achieved through the differential placement of similar transcriptional control elements in mouse and chicken. J Biol Chem, 274(28):19973-19978, 1999.