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

Individual provider Hematology (Internal Medicine) Physician · NPI 1285831057

Dr. Joseph Chao, MD is a Hematology (Internal Medicine) Physician in Duarte, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
Specialties on file
3
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

1500 Duarte Rd
Duarte, CA 91010-3012
Phone: (626) 471-9200
Fax: (626) 301-8233
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Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence A94368 (CA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence A94368 (CA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence A94368 (CA)

Record details

NPI number1285831057
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 27, 2007
Last updated in NPPESNovember 18, 2020
Certification dateNovember 18, 2020
Mailing addressPo Box 512185, Los Angeles, CA 90051-0185

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