Johns Hopkins All Children's Hospital

Meet Our Rheumatology Team

Diana Milojevic, M.D. Rheumatology

Dr. Milojevic is the division chief of pediatric rheumatology in the Johns Hopkins All Children’s Department of Medicine. She joined the hospital staff in 2017.  She previously was the division chief and the fellowship program director of pediatric rheumatology at Tufts University Medical Center where she was also a visiting professor. She is certified with the American Board of Pediatric Rheumatology.
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Laisa Santiago, M.D. Rheumatology

Dr. Santiago specializes in pediatric rheumatology in the Johns Hopkins All Children’s Department of Medicine. She joined the hospital staff in 2013 and now serves as a member of the Johns Hopkins All Children’s Hospital Quality of Care Committee. She is the rheumatology rotation director for the Johns Hopkins All Children's residency program.
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Amanda Schlefman, D.O. Rheumatology

Dr. Schlefman specializes in pediatric rheumatology in the Johns Hopkins All Children’s Department of Pediatric Medicine. She joined the hospital staff in 2018. Dr. Schlefman earned her doctorate of osteopathic medicine from the New York College of Osteopathic Medicine. She completed her internship in pediatrics, a pediatric residency and a fellowship in pediatric rheumatology at Thomas Jefferson University Hospital and Nemours Alfred I. DuPont Hospital for Children in Wilmington, Delaware.
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Ann Szymanski, M.D. Rheumatology

Dr. Szymanski specializes in pediatric rheumatology at Johns Hopkins All Children’s. She sees patients on the hospital’s main campus in St. Petersburg, Florida, and Johns Hopkins All Children’s Outpatient Care, Tampa. She joined the hospital staff in 2019.
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Mary Brothers, APRN

Mary Brothers, APRN



Michelle Brucker, R.N.

Michelle Brucker, R.N.

Michelle Brucker is a nurse in the Rheumatology program at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 1989. In her role, Brucker provides patients and families with rheumatology education and case management services. Brucker graduated from Ohio Valley Hospital School of Nursing in Steubenville, Ohio.


Linita Fields, LPN

Linita Fields, LPN

Linita Fields is a nurse in the Rheumatology program at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2016. In her role, Fields assists in educating patients and families on rheumatology diagnoses and medication, and follows up with patients to check their health status. Before joining the rheumatology team, Fields worked in Johns Hopkins All Children’s hematology/oncology program.


Norma Liburd, B.S.N., RN-BC, M.N.

Norma Liburd, B.S.N., RN-BC, M.N. Education Specialist

Norma Liburd is a pediatric clinical nurse specialist in the Rheumatology program at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 1992. In her role, Liburd provides patient education about rheumatology diagnoses and medications. She also works closely with school personnel to ensure appropriate accommodations are made for students with rheumatic diseases. Liburd founded and coordinates the Pediatric Rheumatology Network, which includes an international listserve for pediatric rheumatology nurses. She is also active with the Arthritis Foundation, Rheumatology Nurses Society and the American College of Rheumatology/Association of Rheumatology Professionals. Liburd received her Bachelor’s of Science in Nursing from the University of Cincinnati, followed by her Master’s in Nursing from Emory University in Atlanta, Georgia.