Dr. Sifontes is on Doximity
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Office
9348 E Rita Rd
Suite 100
Tucson, AZ 85747Phone+1 520-324-4760Fax+1 520-324-4759
Education & Training
- University of ColoradoFellowship, Pediatric Hematology/Oncology, 1993 - 1996
- University of Puerto RicoResidency, Pediatrics, 1980 - 1982
- University of Texas Medical Branch HospitalsInternship, Pediatrics, 1979 - 1980
- University of Puerto Rico School of MedicineClass of 1979
Certifications & Licensure![](https://directory.doximity.com/assets/icons/icon-help-e9f0b148a1e6d1f037dde9f26f025c36bd7c99fd4fe31fd76792996fa2aa5e66.svg)
- AZ State Medical License 1996 - 2025
- CO State Medical License 1995 - 1997
- American Board of Pediatrics Pediatrics
Publications & Presentations
PubMed
- 20 citationsActivated protein C resistance and the factor V Leiden mutation in children with thrombosis.Maria T. Sifontes, Rachelle Nuss, Stephen P. Hunger, Jill Waters, Linda J. Jacobson
American Journal of Hematology. 1998-01-01 - 8 citationsCorrelation between the functional assay for activated protein C resistance and factor V Leiden in the neonate.Maria T. Sifontes, Rachelle Nuss, Stephen P. Hunger, Linda J. Jacobson, Jill Waters
Pediatric Research. 1997-12-01 - 54 citationsThe factor V Leiden mutation in children with cancer and thrombosisMaria T. Sifontes, Rachelle Nuss, Stephen P. Hunger, Judith A. Wilimas, Linda J. Jacobson
British Journal of Haematology. 1997-03-01
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