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

Mr. Duncan Yang

Individual provider Contact Lens Fitter · NPI 1801072418

Mr. Duncan Yang is a Contact Lens Fitter in Rowland Heights, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
Specialties on file
2

Practice location Address checks out

1758 Sierra Leone Ave Ste B
Rowland Heights, CA 91748-5837
Phone: (626) 913-2668
Fax: (626) 913-2198
Show map & directions

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

Specialties & licences

Optician (primary) Taxonomy 156FX1800X · Licence SL4297
Contact Lens Fitter Taxonomy 156FC0801X · Licence CL1231 (CA)

Record details

NPI number1801072418
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 14, 2008
Last updated in NPPESJanuary 14, 2008
Mailing address1758 Sierra Leone Ave Ste B, Rowland Heights, CA 91748-5837