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Nancy Weinfield PhD

Nancy S. Weinfield, PhD

Director of Research Science
Research Scientist III

Nancy.S.Weinfield@kp.org

Education:

PhD, University of Minnesota, Institute of Child Development, Minneapolis, MN 1996
MA, Columbia University Teachers College, New York, NY 1991
AB, Brown University, Providence, RI 1989
Dr. Nancy Weinfield joined MAPRI as research scientist in February 2019. She is a developmental psychologist with expertise in family relationships, maternal and child health and wellness, and mental and behavioral health. Her research interests include postpartum parental depression, adverse childhood experiences, childhood nutrition, child behavioral and emotional health, and the influence of unmet social needs on health disparities.
Prior to joining MAPRI, Dr. Weinfield was a Senior Study Director at Westat, in Rockville, MD. She was previously on the faculty at the University of Virginia, in Charlottesville, VA.

Research Interests:

Parental Depression, Child Behavioral and Emotional Health, Social Needs, Health Disparities, Vaccination Uptake and Safety

For a full list of publications, please see Dr. Weinfield’s Curriculum Vitae.

Recent Publications

  1. Jacobs JB, Hu H, Kim S, Sheu YS, Bishop RC, Chesbrough K, Weinfield NS. Risk Factors for Development of Type 2 and Prediabetes in Children During the COVID-19 Pandemic. Pediatr Obes. 2026;21(1):e70070. doi:10.1111/ijpo.70070/li>
  2. Jacobs J, Kim S, Sheu YS, Chesbrough K, Bishop RC, Weinfield NS. Trends in the Incidence of Pediatric Type 1 Diabetes, Type 2 Diabetes, and Prediabetes Before and During the COVID-19 Pandemic. Public Health Rep. 2026;141(4):588-595. doi:10.1177/00333549251403376
  3. Irving S, Crane B, Daley MF, Dixon BE, Donahue JG, Fuller CC, Jackson LA, Getahun D, Glenn SC, Hambidge SJ, Jacobson KB, Kharbanda EO, O’Leary ST, Schmidt T, Raisler KA, Weinfield NS, Williams JT, Zerbo O, Naleway AL. 2023-2024 COVID-19 vaccination coverage in pregnancy in ten healthcare delivery organizations in the United States. Vaccine. 2026;79:128441. doi:10.1016/j.vaccine.2026.128441.
  4. Weinfield N, O’Gorman E, Mohadikar K, Bettencourt A, Wu E, Young A. Racial and ethnic disparities in actions taken in primary care in response to adolescents’ elevated mental health symptoms. Acad Pediatr. 2026:103304. doi:10.1016/j.acap.2026.103304.
  5. Roblin D, Goodrich G, Davis T, Gander J, McCracken C, Weinfield N, Ritzwoller D. Did Access to Ambulatory Care Moderate the Associations Between Visit Mode and Ancillary Services Utilization Across the COVID-19 Pandemic Period? Medical Care. 2023 Apr 1;61:S39-46.
  6. Irving S, Crane B, Weintraub E, Patel S, Razzaghi H, Daley M, Dixon B, Donahue J, Fuller C, Fuller S, Getahun D, Glenn S, Hambidge S, Jackson L, Jacobson K, Kharbanda E, Maro J, O’Leary S, Schmidt T, Sznajder K, Weinfield N, Williams J, Zerbo O, Naleway A. Infant Respiratory Syncytial Virus Immunization Coverage in the Vaccine Safety Datalink: 2023-2024. Pediatrics. 2025;155(6):e2024070240. doi:10.1542/peds.2024-070240
  7. Prichett L, Weinfield N, Miller M, Schultz B Solomon B, McDonald E, Ryan L. Cost of Intentional Drug Overdose and Other Self-Harm Among Youth in the United States, 2021. Acad Pediatr. 2025;25(4):102800. doi:10.1016/j.acap.2025.102800
  8. Naleway A, Crane B, Irving S, Daley M, Dixon B, Donahue J, Fuller C, Fuller S, Getahun D, Glenn S, Hambidge S, Jackson L, Kharbanda E, Klein N, Schmidt T, Sznajder K, Weinfield N, Williams J, Zerbo O. Vaccination During Pregnancy in the Vaccine Safety Datalink, 2002-2022. Pediatr Infect Dis J. 2025;44(2S):S105-S107. doi:10.1097/INF.0000000000004607
  9. McCracken C, Gander J, McDonald B, Goodrich G, Tavel H, Basra S, Weinfield N, Ritzwoller D, Roblin D, Davis T. Impact of COVID-19 on trends in outpatient clinic utilization: a tale of 2 departments. Medical Care. 2023 Apr 1;61:S4-11.
  10. Roblin D, Goodrich G, Davis T, Gander J, McCracken C, Weinfield N, Ritzwoller D. Management of Neck or Back Pain in Ambulatory Care: Did Visit Mode or the COVID-19 Pandemic Affect Provider Practice or Patient Adherence? Medical Care. 2023 Apr 1;61:S30-8.
  11. Gander J, Goodrich G, McDonald B, McCracken C, Tavel H, Davis T, Weinfield N, Ritzwoller D, Roblin D. Virtual care and urinary tract infection management: comparing ancillary service orders and patient order fulfillments between virtual and in-person encounters during the COVID-19 pandemic in the United States. Medical Care. 2023 Apr 1;61:S21-9.
  12. Ritzwoller D, Goodrich G, Tavel H, Odelberg M, Davis T, Gander J, McCracken C, Weinfield N, Roblin D. Patient factors associated with use of adult primary care and virtual visits during the COVID-19 pandemic. Medical Care. 2023 Apr 1;61:S12-20.
  13. Roblin D, Goodrich G, Davis T, Gander J, McCracken C, Weinfield N, Ritzwoller D. Did Access to Ambulatory Care Moderate the Associations Between Visit Mode and Ancillary Services Utilization Across the COVID-19 Pandemic Period? Medical Care. 2023 Apr 1;61:S39-46.
  14. Weinfield NS, Tavel HM, Goodrich G, McCracken CE, Basra S, Gander JC, Davis TL, Ritzwoller DP, Roblin DW. Health-care-Related Practices in Virtual Behavioral Health Treatment for Major Depression Before and During the COVID-19 Pandemic. Med Care. 2023 Apr 1;61(Suppl 1):S47-S53. doi: 10.1097/MLR.0000000000001815. Epub 2023 Mar 9. PMID: 36893418; PMCID: PMC9994573.
  15. Weinfield NS, Borger C, Gola AA. Breastfeeding Duration in a Low-Income Sample Is Associated With Child Diet Quality at Age Three. J Hum Lact. 2021 Feb;37(1):183-193. doi: 10.1177/0890334420903029. Epub 2020 Feb 24. PMID: 32091965.
  16. Weinfield NS, Anderson CE. Postpartum Symptoms of Depression are Related to Infant Feeding Practices in a National WIC Sample. Journal of Nutrition Education and Behavior. 2022;54(2):118-124. doi:https://doi.org/10.1016/j.jneb.2021.09.002
  17. Borger C, Weinfield NS, Paolicelli C, Sun B, May L. Prenatal and postnatal experiences predict breastfeeding patterns in the WIC Infant and Toddler Feeding Practices Study-2. Breastfeeding Medicine. 2021 Nov 1;16(11):869-77.
  18. Whaley SE, Martinez CE, Paolicelli C, Ritchie LD, Weinfield NS. Predictors of WIC Participation Through 2 Years of Age. J Nutr Educ Behav. 2020;52(7):672-79. doi: 10.1016/j.jneb.2019.12.015
  19. Weinfield NS, Borger C, Au LE, Whaley SE, Berman D, Ritchie LD. Longer Participation in WIC Is Associated with Better Diet Quality in 24-Month-Old Children. J Acad Nutr Diet. 2020;120(6):963-71. doi: 10.1016/j.jand.2019.12.012
  20. Au LE, Paolicelli C, Gurzo K, Ritchie LD, Weinfield NS, Plank KR, Whaley SE. Contribution of WIC-Eligible Foods to the Overall Diet of 13-and 24-Month-Old Toddlers in the WIC Infant and Toddler Feeding Practices Study-2. Journal of the Academy of Nutrition and Dietetics. 119(3), 435-448.

Current Studies

  1. Adolescent Depression Screening in Pediatric Primary Care: An Examination of Case Disposition and Racial and Ethnic Disparities
    Goal: The aim of this retrospective cohort study is to examine screening for depression and case disposition for youth with depressive symptoms in the primary care setting across two health care systems. Using electronic health record data, the study will examine the frequency of depression screening among adolescents (ages 12-17) in pediatric primary care. Among adolescents with positive depression screening, the study will examine referral and mental health treatment receipt. Finally, the study will examine racial and ethnic group differences in screening referral, and treatment.
    Funder: Johns Hopkins Medicine/Kaiser Permanente Research Collaborative
    Role: Principal Investigator
  2. Vaccine Safety Datalink (VSD) InfrastructureGoal: Kaiser Permanente Mid-Atlantic States (KPMAS) is collaborating with CDC and the VSD network of health care organizations to conduct ongoing surveillance of vaccine safety. KPMAS is developing a local data infrastructure that facilitates monitoring of adverse events following vaccination, and collaborating on or leading vaccine safety monitoring and evaluation studies.
    Funder: Centers for Disease Control and Prevention (CDC)
    Role: Co-investigator, Project Director

Recent Presentations

  1. Oseji T, Paul A, Kim S, Jefferson C, Weinfield N. Outpatient healthcare utilization of nonfatal firearm injury survivors in an integrated care model. American Public Health Association Annual Meeting & Expo. Washington, DC. Oral Presentation. Presented October 2025.
  2. Jacobs J, Hu H, Sheu Y, Kim S, Bishop R, Chesbrough K, Weinfield N. Risk factors for development of type 2 and prediabetes in children and teenagers during the COVID-19 pandemic American Public Health Association Annual Meeting & Expo. Minneapolis, Minnesota. Oral Presentation. Presented October 2024.
  3. Ryan L, Solomon B, McDonald E, Miller M, Prichett L, Omaki E, Shields W, Weinfield N. Incidence of medication exposures and poisoning events in pediatric primary care. American Public Health Association Annual Meeting & Expo, Minneapolis, Minesota. Poster Presentation. Presented October 2024.
  4. Jacobs J, Sheu Y, Chesbrough K, Weinfield N. Trends and incidence of type 1 diabetes, type 2 diabetes, and prediabetes in children and teens through the COVID-19 pandemic: an interrupted time series. Pediatric Academic Societies Meeting, Toronto, California. Oral Presentation. Presented May 2024.
  5. Weinfield N, Fathi L, Frankland T, Heliste J, Howick C, Jefferson C. Tauali’i M. Nutrition security and barriers to healthy eating in households with minor children. Health Care Systems Research Network (HCSRN) Annual Conference, Milwaukee, Wisconsin. Presented April 2024.
  6. Irving SA, Crane B, Weintraub ES, Sal P, Razzaghi H, Daley MF, Donahue J, Fuller CC, Fuller S, Getahun D, Glenn SC, Hambidge SJ, Jackson LA, Kharbanda E, O’Leary S, Schmidt T, SznajderK, Weinfield NS, Williams JT, Allison L. Naleway AL. 2023-24 Respiratory Syncytial Virus (RSV) Immunization in Infants: Linked Pregnancy-Infant RSV Vaccination and Nirsevimab Coverage in the Vaccine Safety Datalink. ID Week 2024, Los Angeles, California. Presented October 2024.
  7. Weinfield N, Miller M, McDonald E, Prichett L, Solomon B, Whiting T, Ryan L. Pediatric Medication Orders in Primary Care: Opportunities for Medication Safety Counseling. 2024 American Public Health Association Annual Meeting & Expo (APHA 2024), Minneapolis, Minnesota. Presented October 2024.
  8. Heliste J, McCracken C, Barrie I, Basra S, Davis T, Kim S, Henninger M, McDonald B, Wright M. Weinfield NS. Exploring Racial Disparities in Required and Non-Required Vaccines for Adolescents. Health Care Systems Research Network (HCSRN) 2023 Annual Conference, Denver, Colorado. Poster. Presented February 2023.
  9. Sznajder K, Jefferson C, Kim S, Weinfield N. Contraceptive use by females with chronic medical conditions in a large integrated healthcare system. Society of Family Planning Annual Meeting, Baltimore, Maryland. Poster. Presented December 2022.
  10. Brown M, Davis T, Weinfield N. Screening for Social Needs within Health Systems: Feasibility of Screening, Patient Preferences, and Prevalence of Needs. Health Care Systems Research Network (HCSRN) Annual Conference. Pasadena, California. Panel Presentation. Presented April 2022.
  11. Davis T, Gander J, McCracken C, Weinfield N. Utilizing a Mixed Methods Approach and Community Engagement to Enhance COVID-19 Health Disparities Research. Health Care Systems Research Network (HCSRN) Annual Conference 2022. Pasadena, California. Panel Presentation. Presented April 2022.
  12. Ryan L, Solomon, B, DiNucci A, McDonald E, Miller M, Omaki E, Shields W, Weinfield N. Medication safety counseling practices of pediatric primary care clinicians. APHA 2022. Boston Massachusetts. Presented November 2022.
  13. Weinfield NS, Borger C, Au L, Whaley S, Berman D, Ritchie L, Plank K. Longer Participation in WIC is Associated with Better Diet Quality in 24-Month Old Children. American Society for Nutrition, Nutrition 2019 Meeting, Baltimore, MD. Poster Presented June 2019.
  14. Paolicelli C, Borger C, Machado J, Ritchie L, Weinfield NS, Berman D. Examining the feeding beliefs, rules, and practices of toddler caretakers: Findings from the WIC Infant and Toddler Feeding Practices Study-2. Academy of Nutrition and Dietetics Food and Nutrition Conference and Expo, Philadelphia, PA. Poster. Presented October 2019.
  15. Weinfield NS, Berman D, Whaley SE, Borger C. Now We Are Three! WIC Program Retention and other Important Findings from the WIC Infant and Toddler Feeding Practices Study (WIC ITFPS-2). National WIC Association 2019 Annual Education and Training Conference & Exhibits. Baltimore, Maryland. Presented April 2019.
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