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

Dr. Alexander Ong Sy, MD, MBA, MSL

Individual provider Pulmonary Disease Physician · NPI 1144297748

Dr. Alexander Ong Sy, MD, MBA, MSL is a Pulmonary Disease Physician in Loma Linda, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MBA — Master of Business Administration
A graduate business degree.

See every abbreviation used in this directory →

Practice location Address checks out

11201 Benton St
Loma Linda, CA 92357-0001
Phone: (909) 825-7084
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 177284 (CA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 177284 (CA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 177284 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 177284 (CA)

Record details

NPI number1144297748
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MBA , MSL
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESMarch 6, 2025
Certification dateMarch 6, 2025

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