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

Dr. William Bruce O'Bryant, MD

Individual provider Internal Medicine Physician · NPI 1013041003

Dr. William Bruce O'Bryant, MD is an Internal Medicine Physician in Cypress, California. Practices as a sole proprietor. Licensed in California and Colorado.

Licensed in
CA, CO
In the registry since
2007
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

5757 Plaza Dr Mail Stop CA124-0142
Cypress, CA 90630-5000
Phone: (714) 226-6884
Fax: (949) 588-1177
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G42434 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 41348 (CO)

Record details

NPI number1013041003
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 14, 2007
Last updated in NPPESMarch 24, 2016
Mailing address2300 Main St, Mail Stop Ca124-0142, Irvine, CA 92614-6223

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