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

Dr. Alex Leung, MD

Individual provider Family Medicine Physician · NPI 1669414512

Dr. Alex Leung, MD is an Internal Medicine in Fullerton, California. Graduated from Medical College of Wisconsin in 2003, 23 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Trained at
Medical College of Wisconsin
Licensed in
CA
In the registry since
2006
Specialties on file
2
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

279 Imperial Hwy Ste 730
Fullerton, CA 92835-1041
Phone: (714) 449-4842
Fax: (714) 449-4956
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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 A88871 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence A88871 (CA)

Record details

NPI number1669414512
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 12, 2006
Last updated in NPPESNovember 23, 2009

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2003 (23 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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