Dr. Joseph Chao, M.D., is listed under Oncology in Duarte, California, the primary practice location on the doctor's National Provider Identifier record (NPI 1285831057). This profile shows the specialty, practice city and NPI details from the national NPI Registry. To ask about an appointment, send a consultation request using the form on this page.
The directory lists 184 other oncology doctors whose NPI practice location is in California. Browse all oncology doctors on the Oncology page. These details come from the public NPPES NPI Registry run by the Centers for Medicare & Medicaid Services; The Doctor Directory does not rate or rank doctors.
How can I check Dr. Joseph Chao's license in California?
Look up Dr. Joseph Chao in the Medical Board of California license lookup to confirm an active license and any public disciplinary actions, and check board certification through ABMS Certification Matters. If you have Medicare, Medicare Care Compare lets you search doctors and clinicians enrolled in Medicare.
Frequently Asked Questions
What is Dr. Joseph Chao's specialty?
Dr. Joseph Chao is listed under Oncology on The Doctor Directory, with a recorded provider taxonomy of Internal Medicine, Medical Oncology. The specialty comes from the doctor's entry in the NPPES NPI Registry, the national database of US health care providers maintained by the Centers for Medicare & Medicaid Services (CMS). Because a listing reflects registry data rather than a clinical review, confirm with the practice which services Dr. Joseph Chao currently offers before you book.
Where does Dr. Joseph Chao practice?
Dr. Joseph Chao's primary practice location on record is Duarte, California. That is the practice location in the doctor's National Provider Identifier (NPI) record, which providers keep up to date with CMS themselves, so it can lag behind a recent move. Before a visit, confirm the office address, hours and the insurance plans accepted directly with the practice.
What is Dr. Joseph Chao's NPI number?
Dr. Joseph Chao's National Provider Identifier (NPI) is 1285831057. An NPI is a unique 10-digit number that CMS assigns to each US health care provider, and it does not change when a provider moves or changes jobs. Enter it in the NPPES NPI Registry, linked on this page, to see the name, credential (M.D.), specialty taxonomy and practice address on file.
How can I verify Dr. Joseph Chao's credentials and license?
Start with the NPI Registry record linked on this page, which shows the credential and specialty taxonomy Dr. Joseph Chao reported. To confirm an active medical license and any public disciplinary actions, search the California medical licensing board's online license lookup. Board certification is checked separately through the certifying board, for example the ABMS Certification Matters search.
How do I request an appointment with Dr. Joseph Chao?
Select Send Inquiry or Request Consultation on this profile and complete the short form with your name, email and the reason for your visit. The request is submitted through The Doctor Directory's consultation form, and direct contact details are not shown on this page. The Doctor Directory is free for patients and is a listing service, so it does not provide medical care or medical advice.