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

Onn T. Chan MD, Inc

Organization General Practice Physician · NPI 1902094550

Onn T. Chan MD, Inc is a General Practice Physician in Glendora, California. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1135 E Route 66 Ste 106
Glendora, CA 91740-3769
Phone: (626) 335-0588
Fax: (626) 852-1526
Show map & directions

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

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X

Record details

NPI number1902094550
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Onn Chan — President/Owner · (626) 335-0588
Other names Onn T. Chan, M.D.
NPI enumeratedOctober 9, 2007
Last updated in NPPESOctober 25, 2007
Mailing address1135 E Route 66 Ste 106, Glendora, CA 91740-3769

Other providers in Glendora