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PCCSF Members

Allan M. Greissman

Allan M. Greissman, M.D.

Dr. Greissman received a Bachelor of Science degree in Business Administration from the State University of New York at Albany. After taking a year off to coach high school football, he continued his education at the Medical College of Virginia where he received his Doctor of Medicine degree. He completed his pediatric residency at the Schneider Children's Hospital of Long Island Jewish Medical Center in New Hyde Park, NY, where he then went on to complete his fellowship in pediatric critical care.

Dr. Greissman has been a senior member of Pediatric Critical Care of South Florida since 1994 when he relocated to South Florida. His areas of interest include developing procedural sedation programs, the care of the chronically ventilated patient, and community outreach. He has been active in lecturing throughout the South Florida community on various topics related to pediatrics.

Gerald J. Lavandosky

Gerald J. Lavandosky, M.D., F.A.A.P., F.C.C.P.

Chief of Staff - Joe DiMaggio Children's Hospital
Medical Director - Cardiac Intensive Care Unit
Medical Director - Extracorporeal Life Support

Dr. Lavandosky received his undergraduate degree in biochemistry from Virginia Tech, and then attended medical school at the Eastern Virginia Medical School in Norfolk, Virginia. He completed a pediatric residency at the Children's Hospital of the King's Daughters in Norfolk, Virginia where he was also chief resident. Dr. Lavandosky went on to complete a pediatric critical care fellowship at the Children's Medical Center of Dallas/University of Texas Southwestern Medical Center in Dallas, Texas. Upon completion of fellowship training, Dr. Lavandosky relocated to the South Florida area where he has been practicing pediatric critical care since 1996.

Dr. Lavandosky's interests include the management of infants and children after surgery for congenital heart disease and the use of extracorporeal life support in pediatrics.

Allen M. Burkowsky

Allen M. Burkowsky, M.D.

After receiving his Bachelor of Science degree in Biology from Union College in Schenectady, New York, Dr. Burkowsky followed with his Doctor of Medicine degree from Albany Medical College, Albany, New York in a combined Six Year B.S.-M.D. Medical Education Program. He completed a pediatric residency at Albany Medical Center Hospital, where he was also chief resident. Dr. Burkowsky went on to complete a pediatric critical care fellowship at the Children's Hospital of Wisconsin in Milwaukee, Wisconsin. Upon completion of fellowship training, Dr. Burkowsky was an Assistant Professor in the Department of Pediatrics, Divisions of Critical Care and Pulmonary Medicine at Albany Medical Center. He relocated to the South Florida area in 2000, where he has been practicing pediatric critical care ever since.

Dr. Burkowsky's interests include the management of pediatric respiratory failure, shock, and multiorgan system dysfunction, and chronic lung disease. He has special training in Pediatric bronchoscopy.

Jason L. Adler

Jason L. Adler M.D., M.B.A., F.A.A.P., F.C.C.P., C.P.E.

Dr. Adler obtained his undergraduate Bachelor of Arts degree from the University of Pennsylvania in Philadelphia, Pennsylvania and then went on to medical school at Tufts University School of Medicine in Boston, Massachusetts. He completed residency and fellowship training in pediatrics and pediatric critical care medicine at Children's Memorial Hospital/Northwestern University in Chicago, Illinois. In addition to his medical degree, Dr. Adler completed his Masters in Business Administration from the Kellogg Graduate School of Management/Northwestern University concentrating on health industries management, and he is a certified physician executive by the American College of Physician Executives.

Dr. Adler brought his talents and expertise to South Florida in 2004 and has been practicing with Pediatric Critical Care of South Florida since that time. Beyond the practice of pediatric intensive care medicine, Dr. Adler's areas of special interest include procedural sedation and quality improvement.

Teresa Duncan

Teresa Duncan, M.D., F.A.A.P.

Dr. Teresa Duncan began her training with a Bachelor of Arts in Biology from West Virginia University, Morgantown West Virginia. She obtained her doctor of medicine degree from Marshall University School of Medicine, in Huntington, West Virginia. She continued her matriculation at Marshall University as she completed her Pediatric Residency, where she also served as chief resident.

Dr. Duncan went on to complete a fellowship in Pediatric Critical Care at Jackson Memorial Hospital/University of Miami in Miami, Florida. She enjoyed living and working in South Florida so much that she remained a "local" and has practiced critical care with the PCCSF since 2003.

Dr. Duncan's interests include the care and transport of children who require specialized critical care needs and volunteer outreach services for the under served.

Chad D. Scheller, MD

Chad D. Scheller, MD

Dr. Scheller completed his Bachelors of Arts and Sciences degree in Biology at St. Olaf College in Northfield, Minnesota. He then attended St. George's School of Medicine where he received his medical degree. Dr. Scheller completed Pediatrics residency at Phoenix Children's Hospital in Arizona. He then completed his Pediatric Critical Care Fellowship at The University of California San Diego Rady Children's Hospital, and a Pediatric Cardiac Critical Care Fellowship at Children's Hospital Los Angeles. He is board certified by the American Board of Pediatrics in Pediatrics and Pediatric Critical Care Medicine, a member of The Society of Critical Care Medicine, and a member of The Pediatric Cardiac Intensive Care Society.

Dr. Scheller is originally from South Dakota, and relocated with his wife and two sons to South Florida. His medical interests within the field of pediatric critical care are focused around the advancement in treatment of children with congenital heart disease. He enjoys spending time with family and friends, traveling, and the outdoors.

Eric Exelbert

Eric Exelbert, M.D., F.A.A.P.

Dr. Exelbert completed his Bachelor of Arts and Sciences degree in Philosophy in 1994 at the University of Pennsylvania in Philadelphia, Pennsylvania. He then attended the American University of the Caribbean School of Medicine where he received his medical degree in 1998. In the following year, Dr. Exelbert began a combined residency in Internal Medicine and Pediatrics at the Brody School of Medicine at East Carolina University in Greenville, North Carolina and finished in 2003. He then completed his Pediatric Critical Care Fellowship at The Children's Hospital of Denver in Denver, Colorado in 2006.

Since fellowship, Dr. Exelbert has lived in Golden, Colorado and has worked as a Pediatric Intensivist and Hospitalist for the companies Pediatrix and The Children's HealthCare Network. His professional experience in the last five years has involved practices in Montana, Nevada, and Colorado and he has been an integral part in the expansion of inpatient pediatric services in each of these states. He is board-certified in Pediatrics, Pediatric Critical Care and Internal Medicine.

In the summer of 2010, Dr. Exelbert left his post as Medical Director of Inpatient Pediatrics at the Rocky Mountain Hospital in Denver, Colorado and relocated with his wife and two daughters to their childhood home of South Florida.

Marcelo Egea, MD

Marcelo Egea, MD

Dr. Marcelo Egea is originally from Argentina and earned his Medical Degree from the University of Buenos Aires in Argentina. After completing his observership at the University of Miami, he joined the Pediatric Critical Care Laboratory directed by Dr. John Kuluz at the University of Miami. Dr Egea's research focused on traumatic brain injury and spinal cord injury models. He has been practicing in South Florida since 2011 after completing his Pediatric and Pediatric Critical Care training at Jackson Memorial Hospital/University of Miami Miller School of Medicine. He is board certified in Pediatrics and Pediatric Critical Care. He lives in South Florida with his wife and four daughters.

His areas of interest include traumatic brain injury, trauma, sepsis and multi organ dysfunction syndrome and solid organ transplants.

Ryan Moran

Ryan Moran, MD, MPH

Dr. Moran earned his undergraduate degree in Biochemistry and Molecular Biology from the University of Wisconsin and his Doctor of Medicine at the University of North Carolina School of Medicine. He holds a Master of Public Health from Vanderbilt University in Nashville, Tennessee.

Dr. Moran did his pediatric residency at University Hospitals- Rainbow Babies and Children's Hospital in Cleveland, Ohio, and he went on to do fellowship training in pediatric critical care medicine at Vanderbilt University Medical Center.

He is board certified by the American Board of Pediatrics in pediatrics and pediatric critical care medicine, is a Fellow of the American Academy of Pediatrics, and a member of the Society of Critical Care Medicine. Dr. Moran is originally from Wisconsin. His interests include diving, triathlons, and traveling. He has been actively involved in medical mission trips with Heart Care International.

Alison Davis

Alison Davis, PA-C, M.M.S.

Alison Davis attended Indiana University and received her Bachelor of Science in Biology. She went on to attend Nova Southeastern University in Fort Lauderdale, Florida where she completed training in the physician assistant program and also obtained a Masters of Medical Sciences degree. She has been practicing exclusively pediatric critical care since graduating in 2000.

Ms. Davis is a board certified physician assistant who enjoys the practice of pediatric critical care. She has a special interest in all forms of post-operative care and in particular the management for infants and children after surgery for congenital heart disease. In addition, Alison plays an active role in clinical research, and she has served as the research coordinator for numerous clinical research studies in the pediatric intensive care unit.

Ryan Malossi

Ryan Malossi, PA-C

Ryan Malossi, PA-C, received his Bachelor of Science in Biological Sciences at Florida International University and went on to obtain a Master of Medical Sciences from Barry University in 2019.

He was born and raised in South Florida and he is passionate about giving back to his community. He has a special interest in caring for critically ill and post-operative pediatric patients, especially those with neurological conditions. Ryan is a board-certified Physician Assistant and a member of the Florida Academy of Physician Assistants and the American Academy of Physician Assistants.

Nicole Kallstron

Nicole Kallstron, ARNP

Nicole attended the University of Central Florida where she received a Bachelor's Degree in Psychology with completion of an honors thesis. She went on to attend Florida Atlantic University where she received her Bachelor's of Science in Nursing as well as her Masters of Science in Nursing.

Nicole has been working at Joe DiMaggio Children's Hospital in pediatric critical care since 2012. She has a special interest in caring for neurosurgical and trauma patients.

Nicole is a member of the American Nurses Association and the American Association of Nurse Practitioners.

Desiree Krass

Desiree Krass, ARNP

Desiree attended the University of Mississippi and obtained a Bachelor of Science degree in Criminology but quickly decided that wasn't the path for her and went on to earn a Bachelor of Science degree in Nursing from Florida Atlantic University in 2006. After working for some time in Pediatric Critical Care as a registered nurse, she decided caring for and treating critically ill children was her passion and went on to pursue an advanced degree. She graduated with honors from Vanderbilt University with a Master of Science in Nursing.

After practicing for multiple years as an ARNP in well-established children's hospitals in Nashville and North Carolina, she and her family decided to relocate to her native South Florida. She was fortunate to obtain a position with PCCSF at Joe DiMaggio Children's Hospital and is very excited for the opportunity to be able to continue her passion of Pediatric Critical Care Medicine with the PCCSF team.

Desiree is a board-certified Acute Care Pediatric Nurse Practitioner and a member of the National Association of Pediatric Nurse practitioners.

Karalyn Applegate

Karalyn Applegate, ARNP

Kara went to Florida State University where she obtained her Bachelor of Science in Nursing. Afterwards, she moved to Atlanta where she started her nursing career in the PICU at Children’s Healthcare of Atlanta. After completing her Master of Science in Nursing at the University of Alabama at Birmingham, she began working as an acute care pediatric nurse practitioner in the same PICU. In 2015, it was time to come back home to South Florida and she began working as an ARNP with Pediatric Hospitalists of South Florida. Now, she has transitioned to working with the critical care team at Pediatric Critical Care of South Florida.

She has a special interest in the care of patients with complex medical concerns and also works as the nurse practitioner at Kidz Korner, a long-term care facility for medically complex and fragile children.

Kara enjoys spending time traveling with her husband, fishing, and cooking.

Dana March

Dana March, ARNP

Dana March obtained her undergraduate Bachelor of Science degree from the University of Miami. She started her nursing career in the PICU and on the Critical Care Transport Team at Children's Memorial Hospital in Chicago, Illinois. After working at Children's Memorial for 10 years, she returned to school to earn a Master of Science in Nursing at the University of Illinois- Chicago.

Dana is a board-certified Primary Care Pediatric Nurse Practitioner. Prior to joining Pediatric Critical Care of South Florida, she worked as a Neonatal Nurse Practitioner and as a Primary Care Nurse Practitioner in a private practice and was also a medical consultant for an environmental science group. She is interested in applying research to practice and in preventative education.

In 2015 she relocated to Miami with her husband and two daughters. She enjoys spending time with her family and being outdoors.

Alceste Villasuso

Alceste Villasuso, ARNP

Alceste Villasuso attended the University of Florida where she received a Bachelor of Science in Health Education and Promotion in 2011, as well as a Bachelor of Science in Nursing in 2012. Thereafter, she went on to obtain her Doctor of Nursing Practice from the University of Florida. Prior to joining Pediatric Critical Care of South Florida, Alceste worked in South Florida as a registered nurse in pediatric critical care.

Alceste has a special interest in caring for critically ill children and is passionate about health education for her patients, families, and community. She is an active member of the National Association of Pediatric Nurse Practitioners as well as the Nurse Practitioner Council of Miami Dade Inc. When not at work, Alceste enjoys cooking, traveling, and spending time outdoors with her family.

  • Allan Greissman, MD, FAAP
  • Gerald Lavandosky, MD, FAAP, FCCP
  • Allen Burkowsky, MD, FAAP
  • Teresa Duncan, MD, FAAP
  • Jason Adler, MD, MBA, FAAP, FCCP, CPE
  • Eric Exelbert, MD, FAAP
  • Ryan Moran, MD, MPH
  • Chad D. Scheller, MD
  • Marcelo Egea, MD
  • Alison Davis, PA-C
  • Ryan Malossi, PA-C
  • Nicole Kallstron, ARNP
  • Desiree Krass, ARNP
  • Karalyn Applegate, ARNP
  • Dana March, ARNP
  • Alceste Villasuso, ARNP