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

Dr. Michael Chai, MD

Individual provider Internal Medicine Physician · NPI 1083748727

Dr. Michael Chai, MD is an Internal Medicine in Upland, California. Graduated from Eastern Virginia Medical School in 1994, 32 years ago. Practices as a sole proprietor and offers telehealth. Licensed in California.

Years since qualifying
32
Trained at
Eastern Virginia Medical School
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

490 N Mountain Ave # B
Upland, CA 91786-5117
Phone: (909) 920-6698
Fax: (909) 931-7192
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G79965 (CA)

Record details

NPI number1083748727
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 15, 2007
Last updated in NPPESNovember 20, 2023
Certification dateNovember 20, 2023
Mailing address490 N Mountain Ave # B, Upland, CA 91786-5117

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolEASTERN VIRGINIA MEDICAL SCHOOL
Graduated 1994 (32 years in practice)
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Other providers in Upland