Thomas H. Fong, MD

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My specialty:
Hematology And Oncology

My provider affiliation:
Kaiser Permanente physician

I speak: English

My gender: Male

Where I practice

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About me

I am a board-certified medical oncologist specializing in hematology and oncology at Kaiser Permanente. It is a privilege to care for members and their families through every step of their cancer journey. I’d like to share a little about myself, and I look forward to getting to know you.

 

Biography

 

I grew up in Baltimore and completed my undergraduate studies at Cornell University in upstate New York. I then spent more than a decade at Washington University in St. Louis, Missouri, where I received my medical training. In 2008, my wife and I moved to Southern California with our baby boy to begin a new chapter. Today, our family has grown to 5, and we feel blessed to call this region our home.

 

About my practice

 

I am proud to be part of the hematology/medical oncology team at Kaiser Permanente’s Fontana Medical Center. I care for members with a broad spectrum of conditions ranging from benign blood disorders to complex cancers. My goal is to work in partnership with members and their loved ones to optimize both health outcomes and quality of life through compassionate care based on evidence and current research.

 

Cancer Subspecialty Focus

My clinical expertise includes the management of complex hematologic malignancies, solid tumors, and benign blood disorders. I treat a wide range of cancers, including breast cancer, lung and thymic cancers, head and neck cancers, genitourinary cancers, skin cancers such as melanoma, and thyroid and endocrine tumors.

 

Collaboration on Multidisciplinary Teams

At Kaiser Permanente, we believe that positive outcomes come from team-based care. I work closely with colleagues across specialties and participate in our multidisciplinary thoracic tumor board, where experts in medical oncology, surgery, radiation oncology, and pathology collaborate to design personalized treatment plans for each member, from diagnosis through survivorship.

 

Research and Clinical Trials

I am dedicated to advancing cancer care through clinical research as part of the National Cancer Institute’s Community Oncology Research Program (NCORP). As a sub-investigator, I contribute to national studies through collaborations with the SWOG Cancer Research Network, the National Surgical Adjuvant Breast and Bowel Project (NSABP), the Alliance for Clinical Trials in Oncology, and NRG Oncology. These efforts help bring innovative therapies and emerging science directly to our patients.

 

How I thrive

 

Outside of work, I enjoy spending time with my wife and our 3 wonderful children, who are a constant source of joy. We are active in our church community, where faith plays a central role in maintaining balance and personal well-being.

My office

Languages spoken by medical staff

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My provider type

Physicians and Surgeons

My training, certifications and licensing

Medical school

Washington University School of Medicine
St. Louis , MO

Board certification

Hematology

American Board of Internal Medicine

Medical Oncology

American Board of Internal Medicine

Medical training

Fellowship

Hematology and Oncology

Washington University School of Medicine
St. Louis , MO

Internship

Internal Medicine

Washington University School of Medicine
St. Louis , MO

Residency

Internal Medicine

Washington University School of Medicine
St. Louis , MO

Joined Permanente Medical Group

2008

Active license information

License number

A104522

License type

Physician and Surgeon

License issuing state

CALIFORNIA

National Provider Identifier (NPI)

1790812642

Cultural Competency Training (CCT)

Completed  

My hospitals

All Kaiser Permanente physicians and podiatrists have admitting privileges or the ability to refer patients to our plan hospitals. Admitting privileges of other providers may vary by plan and facility. Contact your plan administrator for details.

Fontana Medical Center
9961 Sierra Ave, Fontana, CA 92553
Ontario Medical Center
2295 S Vineyard Ave, Ontario, CA 91761

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Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
 
Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.

 

This page was last updated on: 01/18/2026