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

Dr. Joshua Mon Chan, DO, MS

Individual provider Internal Medicine Physician · NPI 1689317588

Dr. Joshua Mon Chan, DO, MS is an Internal Medicine in Orange, California. Qualified in 2023, 3 years ago. Practices as a sole proprietor. Licensed in California.

Years since qualifying
3
Licensed in
CA
In the registry since
2022
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

101 The City Dr S
Orange, CA 92868-3201
Phone: (714) 456-5691
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 20A23348 (CA)

Record details

NPI number1689317588
Entity typeIndividual (Type 1)
GenderMale
Credentials DO , MS
Sole proprietorYes
NPI enumeratedApril 18, 2022
Last updated in NPPESApril 27, 2026
Certification dateApril 27, 2026
Mailing address101 The City Dr S, Orange, CA 92868-3201

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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