Joseph Sze-Tsu Chan, M.D.

Hematology & Oncology

Internal Medicine

Joseph Sze-Tsu Chan is a Hematology & Oncology specialist based in Fontana, CA with over 25 years of clinical experience. Offers virtual telehealth visits.

(909) 427-5000Fontana, CA
Telehealth Available
NPI Active per CMS — Q2 2026

Joseph Sze-Tsu Chan, M.D. practices as part of a group hematology & oncology specialist practice in Fontana, CA. He graduated from Vanderbilt University School of Medicine in 2001 and has 25+ years of clinical experience. Among his Medicare patients, common conditions include hypertension and cancer (per CMS data).

At a glance

  • Uses generic medications more than 24% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 796 Internal Medicine providers in CASee all Internal Medicine in Fontana25+ years experienceNPI since 2006

Older · 1637dNPPES updated 2021-11-29 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

9985 Sierra Ave, Fontana, CA 92335-6720

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 2001

    Vanderbilt University School of Medicine

  2. 25 years in practice

    Experienced

Internal MedicineHematology & Oncology in FontanaAllopathic & Osteopathic Physicians

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.

Taxonomy: 207RH0003X

Education & Training

Vanderbilt University School of Medicine (Class of 2001)

Practice Footprint

Mailing address

5830 Delamar Dr, Fontana, CA 92336-4592

Differs from practice location

Virtual Hematology & Oncology Care With Joseph Sze-Tsu Chan

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Joseph Sze-Tsu Chan for blood pressure monitoring, follow-up consultations — no travel to Fontana required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Joseph Sze-Tsu Chan

Dr. Chan is listed as active in the NPI registry with telehealth listed in Fontana, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (909) 427-5000.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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