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Staff Bios

ziegfeld2Susan Ziegfeld, C.R.N.P.
Pediatric Trauma/Burn Program Manager

Susan Ziegfeld began working at Hopkins Children’s in 2001 as Pediatric Trauma Nurse Coordinator. In 2004 she became the Pediatric Trauma/Burn Program Manager, responsible for coordinating and overseeing the trauma/burn clinic. In addition to her clinical interests in treating trauma and burn, she has published research on, among other subjects, child abuse, shaken baby syndrome, spinal injuries and traumatic brain injury.


  • University of Pennsylvania, Masters of Science in Nursing
  • Holy Family College, Philadelphia, PA, Bachelor of Science in Nursing

Board Certifications

  • Advanced Burn Life Support
  • Advanced Trauma Life Support
  • ANCC Pediatric Nurse Practitioner Certification
  • CCRN Certification, 1991-present

Contact Information

Phone: 410-614-1811
Email: sziegfe1@jhmi.edu

Katie Taylor, B.S.N.

Performance Improvement Coordinator for Pediatric Trauma/Burn

Katie Taylor began working at Hopkins Children’s in 1998. She was a pediatric intensive care nurse for 7 ½ years and then a senior nurse in the pediatric post-anesthesia care unit for two years. As Performance Improvement Coordinator she works with outside providers as well as in-house medical staff to assure that children are receiving the best care possible.

Board Certifications

  • Advanced Trauma Care for Nurses Provider

Contact Information

Phone:  410-502-0972
Email: kdeickm1@jhmi.edu 

Latanya Williams

Joanne Mills, RN, M.S.N.
Nurse Manager

Joanne Mills, nurse manager for the Pediatric Burn Unit since its inception in 2004, is responsible for the overall operations of the unit. She has also served in several other leadership positions with the Children's Center, including pediatric shift coordinator, nurse manager of the adolescent inpatient and outpatient units, and nurse manager of pediatric oncology inpatient and outpatient units.


  • Johns Hopkins University, Master of Administrative Science
  • Towson State University, Bachelor of Science in Nursing

Board Certifications

  • Advanced Burn Life Support
  • American Burn Association

Contact Information

Phone: 410-502-5259
Email: jcmills@jhmi.edu

Mindi Lutwin, MSW, LCSW-C

Mindi Lutwin has been a clinical social worker at Johns Hopkins Hospital since 2001. She provides services including consultation, crisis intervention, advocacy, and referral services to patients and their families on the inpatient pediatric trauma and burn services.

Clinical Interests

  • Assessment of victims of trauma and burns
  • Development and implementation of injury prevention initiatives
  • Assessment of victims of child abuse and neglect


  • Masters of Social Work (MSW) with a specialization in Maternal and Child Health, University of Maryland Baltimore, 2000
  • Bachelor of Arts (BA) in psychology, University of Delaware, Newark, DE 1998

Board Certifications

  • Licensed Clinical Social Worker-Certified (LCSW-C), Maryland Board of Social Work
  • Member of Maryland Professional Volunteer Service Corps
  • Baltimore City Child Development Community Policing Program Fellow

Contact Information

Phone: 410-955-8123
Email: Mlutwin1@jhmi.edu

Rebecka Carlson, CCLS 


Kristen Johnson, CCLS      


Heather Powell, Ph.D.

Heather Powell has been working in pediatric psychology at the Johns Hopkins Hospital since 2007 and joined the Pediatric Burn Center in 2009. She provides services including consultation, psychological assessment, behavioral interventions, and psychosocial support to patients and their families on the inpatient and outpatient pediatric burn services.


  • Doctorate of Philosophy (PhD) in School Psychology, University of South Florida, Tampa FL, 2007
  • Master of Arts (MA) in Psychology, American University, Washington DC, 2000

Board Certifications/Activities

  • Licensed Psychologist, Maryland Board of Examiners
  • Member, American Psychologist Association
  • Member, National Association of School Psychologists

Contact Information

Phone: 410-955-7675
Email: hpowell4@jhmi.edu



benselassieBen Selassie, LCSW
Administrator, Injury Free Coalition for Kids

Ben Selassie is a pediatric injury epidemiologist, educator and mental health practitioner, and serves as the Project Administrator for the Injury Free Coalition for Kids at Johns Hopkins School of Medicine. His scholarly research focuses on the application of cultural interventions to achieve mental wellness, substance abuse prevention, injuries, violence prevention and HIV education.


  • Morgan State University, Bachelor of Science in Psychology
  • Clark Atlanta University, Master of Social Work
  • Emory University, Master of Public Health

Board Certifications

  • Licensed Clinical Social Worker
  • Academy of Certified Social Workers
  • Center for Injury Research and Policy/Johns Hopkins Summer Institute: Principles and Practices of Injury Prevention, June 2001

Contact Information

Phone: 443-287-2026
Email: bselass1@jhmi.edu


RosemaryNabaweesiRosemary Nabaweesi, MPH, MBChB
Senior Project Analyst, Pediatric Burn/Trauma Program

Rosemary Nabaweesi, who joined Johns Hopkins in 2005, is responsible for the Johns Hopkins Pediatric Trauma & Burn Center's management of clinical, research and operational data systems.


  • Makerere University Medical School, Uganda
  • Johns Hopkins Bloomberg School of Public Health, MPH
  • Medical internship, Pediatrics and Surgery, Makerere University Medical School


  • American Public Health Association
  • American Trauma Society
  • Maryland Department of Health & Mental Hygiene

Contact Information

Phone: 410-614-1811
Email: rnabawe1@jhmi.edu