Individual provider · Type 1 NPI

Mark Joshua Chang, DO

Hematology & Oncology Physician · Upland, CA

NPI number 1861954182 Active

Practice location

1100 San Bernardino Rd Ste 1100
Upland, CA 91786-4952

Call (909) 949-2242 Map

Fax (909) 981-5783

Mailing address

PO Box 512185
Los Angeles, CA 90051-0185

Specialties and licenses

Taxonomy	Code	License
Internal Medicine Physician	207R00000X	DO3131 (NV)
Hematology & Oncology Physician Primary	207RH0003X	20A24887 (CA)
Medical Oncology Physician	207RX0202X	20A24887 (CA)

Hematology & Oncology Physician: An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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About NPI 1861954182

Mark Joshua Chang, DO's National Provider Identifier is 1861954182, issued on Apr 4, 2019. The primary taxonomy on file is Hematology & Oncology Physician (207RH0003X), and the practice location is in Upland, CA. The record was last updated on Jul 8, 2026.