Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Theresa Ong Liu Dumlao, MD

Individual provider Hematology & Oncology Physician · NPI 1043477441

Theresa Ong Liu Dumlao, MD is a Hematology/Oncology in Gilbert, Arizona. Qualified in 1993, 33 years ago. Practices with Banner Cancer Center Specialists LLC, a 338-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Alabama, Arizona and Texas.

Years since qualifying
33
Licensed in
AL, AZ, TX
In the registry since
2008
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2946 E Banner Gateway Dr Ste 450
Gilbert, AZ 85234-2165
Phone: (480) 256-6444
Fax: (480) 256-3359
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2946 E Banner Gateway Dr, Gilbert, AZ 85234-2165 — (256) 466-0071

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 32590 (AZ)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence P0083 (TX)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 25912 (AL)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 25912 (AL)

Record details

NPI number1043477441
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 22, 2008
Last updated in NPPESAugust 11, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Banner Cancer Center Specialists Llc — 338 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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