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

Dr. Sharon Williams, MD

Individual provider Clinical & Laboratory Immunology (Allergy & Immunology) Physician · NPI 1457772949

Dr. Sharon Williams, MD is a Clinical & Laboratory Immunology (Allergy & Immunology) Physician in North Tustin, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2013
Specialties on file
6
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

12231 Newport Ave
North Tustin, CA 92705-3205
Phone: (949) 519-2311
Fax: (949) 276-3209
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence A113432 (CA)
Clinical & Laboratory Immunology (Allergy & Immunology) Physician Taxonomy 207KI0005X · Licence A133432 (CA)
Allergy Physician Taxonomy 207KA0200X · Licence A133432 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A133432 (CA)
Allergy & Immunology (Internal Medicine) Physician Taxonomy 207RA0201X · Licence A133432 (CA)
Pediatric Allergy/Immunology Physician Taxonomy 2080P0201X · Licence A133432 (CA)

Record details

NPI number1457772949
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 30, 2013
Last updated in NPPESMarch 7, 2023
Certification dateMarch 7, 2023