Meet Our Team

Our medical team is extremely skilled and highly respected for their work in the fight against childhood cancer and blood disorders. They are also moms and dads, so their compassion runs high – as does their commitment. Kids who need treatment have an experienced and knowledgeable team on their side.

The Cook Children's Hematology and Oncology Center team is made up of physicians, nurse practitioners, a dedicated nursing staff and other services such as child life, social services, physical therapy and other rehabilitative therapies and neuropsychology.

Within the larger team are smaller ones with specialized focus in specific areas of our programs.

  • Bone Marrow and Stem Cell Transplant
  • Hematology
  • Oncology
  • Neuro-Oncology
  • Orthopedic Oncology
  • Neuroblastoma

Depending on your child's specific diagnosis and care plan, your health care team may include the following:

Bone Marrow and Stem Cell Transplant

Gretchen Eames, MD, MPH

Hematology and Oncology
Headshot of Dr. Gretchen Eames
Accepting new patients

Richard Howrey, MD

Hematology and Oncology
Headshot of Dr. Richard P. Howrey
Accepting new patients
  • aBrentlingerAngela Brentlinger
    MSN, RN, CPNP
  • mMolinaMaranda Molina
    MSN, RN, CPNP-AC, CPON
  • aNelsonAmber Nelson
    MSN, RN, CPNP-AC

Hematology

Lauren Akers, DO

Hematology and Oncology
Headshot of Dr. Lauren Akers
Accepting new patients

Donald Beam, MD

Hematology and Oncology
4.9 out of 5
41 Ratings
Headshot of Dr. Donald Beam
Accepting new patients

Jennifer Han, MD

Hematology and Oncology
Headshot of Dr. Jennifer Han
Accepting new patients

Clarissa Johnson, MD

Hematology and Oncology
4.9 out of 5
35 Ratings
Headshot of Dr. Clarissa Johnson
Accepting new patients

Sadie Mason, MD

Hematology and Oncology
Headshot of Dr. Sadie Mason
Accepting new patients

Timothy McCavit, MD

Hematology and Oncology
5.0 out of 5
50 Ratings
Headshot of Dr. Timothy McCavit
Accepting new patients

Abdul Siddiqui, MD

Hematology and Oncology
Headshot of Dr. Abdul Siddiqui
Accepting new patients

Marcela Torres, MD

Hematology and Oncology
Headshot of Dr. Marcela D. Torres
Accepting new patients

Oncology

Lauren Akers, DO

Hematology and Oncology
Headshot of Dr. Lauren Akers
Accepting new patients

Karen Albritton, MD

Hematology and Oncology
Headshot of Dr. Karen Halaburt Albritton
Accepting new patients

Chelsee Greer, DO

Hematology and Oncology
Headshot of Dr. Chelsee Greer
Accepting new patients

Kenneth Heym, MD

Hematology and Oncology
4.9 out of 5
44 Ratings
Headshot of Dr. Kenneth M. Heym
Accepting new patients

Syed Muntajibuddin, MD

Hematology and Oncology
Headshot of Dr. Syed Muntajibuddin
Accepting new patients

Meghan Murphy, MD

Hematology and Oncology
Headshot of Dr. Meghan Murphy
Accepting new patients

Holly Pacenta, MD

Hematology and Oncology
Headshot of Dr. Holly Pacenta

Anish Ray, MD

Hematology and Oncology
Headshot of Dr. Anish K. Ray
Accepting new patients

Kevin Tien, MD

Hematology and Oncology
Headshot of Dr. Kevin Tien
Accepting new patients

Kelly Vallance, MD, MPH

Hematology and Oncology
Headshot of Dr. Kelly L. Vallance
Accepting new patients
  • aBaylesAmy Bayles
    MSN, RN, CPNP, CPON
  • lDaltonLisa Dalton
    MSN, RN, FNP-BC

Neuro-Oncology

Jeffrey Murray, MD

Neuro-Oncology
4.9 out of 5
45 Ratings
Headshot of Dr. Jeffrey C. Murray
Accepting new patients

Sibo Zhao, MD

Neuro-Oncology
Headshot of Dr. Sibo Zhao
Accepting new patients

Mandy MansellMandy Mansell
MSN, RN, CPNP AC/PC, CPON

We are here to help.

If your child has been diagnosed, you probably have lots of questions. We can help. If you would like to schedule an appointment, refer a patient or speak to our staff, please call our offices at 682-885-4007.