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

Dr. Margaret G. O'Byrne, MD

Individual provider Cardiovascular Disease Physician · NPI 1366543159

Dr. Margaret G. O'Byrne, MD is a Cardiovascular Disease Physician in San Diego, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

3811 Valley Centre Dr
San Diego, CA 92130-3318
Phone: (858) 764-3000
Fax: (858) 784-5933
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence G76683 (CA)

Record details

NPI number1366543159
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 26, 2006
Last updated in NPPESJuly 8, 2007

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