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

Melissa Siew, MD

Individual provider Internal Medicine Physician · NPI 1780096099

Melissa Siew, MD is an Internal Medicine in Westminster, California. Qualified in 2012, 14 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
14
Licensed in
CA
In the registry since
2014
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

7955 Westminster Blvd
Westminster, CA 92683-4001
Phone: (714) 379-3221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A132081 (CA)

Record details

NPI number1780096099
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 21, 2014
Last updated in NPPESSeptember 18, 2015
Mailing address7955 Westminster Blvd, Westminster, CA 92683-4001

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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