Individual provider · Type 1 NPI

Ruwan Gunaratne, MD

Hematology & Oncology Physician · Stanford, CA

NPI number 1538664461 Active

Practice location

300 Pasteur Dr
Stanford, CA 94305-2200

Call (650) 723-4000 Map

Specialties and licenses

TaxonomyCodeLicense
Medical Oncology Physician 207RX0202XA163648 (CA)
Internal Medicine Physician 207R00000XA163648 (CA)
Hematology & Oncology Physician Primary 207RH0003XA163648 (CA)
Student in an Organized Health Care Education/Training Program 390200000XNone listed
Hematology (Internal Medicine) Physician 207RH0000XA163648 (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 1538664461

Ruwan Gunaratne, MD's National Provider Identifier is 1538664461, issued on Mar 23, 2018. The primary taxonomy on file is Hematology & Oncology Physician (207RH0003X), and the practice location is in Stanford, CA. The record was last updated on Jan 27, 2026.