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

Individual provider Otolaryngology Physician · NPI 1003965039

Dr. William John Owsley, MD is an Otolaryngology Physician in Newport Beach, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

2011 Westcliff Dr Ste 5
Newport Beach, CA 92660-5599
Phone: (949) 645-2520
Fax: (949) 645-3502
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence C33164 (CA)

Record details

NPI number1003965039
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 9, 2007
Last updated in NPPESJuly 8, 2007

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