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For Patients

The Division of Hematology consists of four full-time faculty members at University of Colorado Hospital and one at the Denver Veterans' Administration Hospital.

A close and collegial relationship exists with the Division of Medical Oncology, which makes it possible to sponsor a joint fellowship program and a joint attending program for the hematology-oncology service at University of Colorado Hospital. 

Faculty members attend on the joint hematology-oncology services at University of Colorado Hospital.  They provide expert hematology consultation for the University Hospital.  They attend hematology and oncology clinics at the Anschutz Cancer Pavilion. 

Dr. Hassell provides continuity care for patients with sickle cell anemia in both the inpatient and outpatient setting and and Dr. Stabler provides similar service for patients with hemophilia and other congenital and acquired bleeding disorders.  Dr. Hassell is also the physician in charge of the special anti-coagulation clinic.


University of Colorado Hospital Hematology Clinic

Monday - Friday 8:00am to 4:30pm

Sally P. Stabler, M.D.
Kathryn Hassell, M.D.
Anschutz Medical Campus
Anschutz Cancer Pavillion (ACP)
Second Floor
1665 Aurora Court
Aurora, CO 80045

Phone: (720)-848-0300

Conditions Treated at the Hematology Clinic

  • Anemia
  • Pancytopenia
  • Thrombocytopenia
  • Bleeding disorders
  • Clotting disorders
  • Hemochromatosis
  • Thalassemia
  • Myeloproliferative Disorders
Hemophilia and Thrombosis Center  (website)

Monday - Friday 8:00am to 4:30pm  

Sally P. Stabler, M.D.
Jorge DiPaola, M.D. (Pediatrics)
13199 E. Montview Blvd., Suite 100
Aurora, CO 80045
Main Clinic: (888)-297-0724
Nurse of the Day: (303)-724-0364
Main Pharmacy: (888)-724-7427
Fax: (303)-724-0947

Adult Patients: Call University of Colorado Hospital Operator at (720)-848-0000 and ask to have the Hematology Fellow on call paged.

Pediatric Patients: Call AlphaPage at (303)-785-3335 or toll free at (800)-536-5105. AlphaPage is the answering service for the Center for Cancer and Bleeding Disorders at The Children’s Hospital. Ask to have the Hematology Fellow on call paged.

To reach the pharmacy for Emergency Factor: Call Pharmacy Answering Service at (303)-762-2853 or toll free at (866)-873-1446, and ask to have the pharmacist on call paged.

Adult Patients: Call University of Colorado Hospital Operator at (720)-848-0000 and ask to have the Hematology Fellow on call paged.


Conditions Treated at the Hemophilia and Thrombosis Center

  • Hemophilia
  • Thrombosis
  • Pediatric Stroke
Colorado Sickle Cell Treatment and Research Center (website)  

Monday - Friday 8:00am to 4:00pm

Adult Sickle Cell Clinic
University of Colorado Hospital

Phone: (720)-848-0300

Kathryn Hassell, M.D.
Christian Billington (​Adult Care Coordinator)
Phone: (303)-724-9073

Pediatric Sickle Cell Clinic
Children's Hospital Colorado

Phone: (720)-777-6740

Rachelle Nuss, M.D.
Michael Regier (Pediatric Care Coordinator)
Phone: (303)-724-9066