Photo of Benjamin I. Leach, MD

Benjamin I. Leach, MD

Accepting New Patients
15031 Rinaldi Street, Suite 150
Mission Hills, CA 91345
2278.0 miles away
Medical Groups & Affiliations
Providence Affiliated Physicians, Los Angeles County
Speaks: Spanish and English
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City of Hope Medical Foundation

15031 Rinaldi Street, Suite 150, Mission Hills, CA 91345

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About Benjamin I. Leach

Benjamin Leach, M.D., takes a passionate approach to cancer treatment incorporating leading-edge therapies from precision medicine to immunotherapy, with a relentless commitment to serving his patients and improving their quality of life. “It’s a privilege to be welcomed into patients’ lives,” he says. Dr. Leach received his medical degree at Tulane University in New Orleans, completed his internship and residency at Los Angeles County + USC Medical Center and continued his training with a hematology/oncology fellowship at New York-Presbyterian Hospital/Weill Cornell Medical College. At Weill Cornell, he pursued his interest in targeted treatment, studying the WNT signaling pathway implicated in colorectal cancer development, for which he was awarded the Weill Department of Medicine Fellows Award in Research. Dr. Leach is excited to be returning to Southern California; he’ll treat patients at City of Hope’s Mission Hills, California, facility.

Medical School

Tulane University School of Medicine, New Orleans, LA
2011

Internship

LAC - USC Medical Center, Los Angeles, CA
2012

Residency

LAC - USC Medical Center, Los Angeles, CA
2014

Fellowship

N. Y. Presbyterian Hospital/Weill Cornell Medical Center, New York, NY
2017

Professional Associations
Board Certifications
  • American Board of Internal Medicine, Medical Oncology
  • American Board of Internal Medicine, Hematology
  • American Board of Internal Medicine, Internal Medicine
City of Hope Medical Foundation
15031 Rinaldi Street, Suite 150
Mission Hills, CA 91345

City of Hope Medical Foundation - Rancho Cucamonga
7777 Milliken Avenue, Suite 10
Rancho Cucamonga, CA 91730

Medical Groups & Affiliations
Providence Affiliated Physicians, Los Angeles County

Clinical Interests

  • Aids Related Malignancies
  • Anaplastic Meningioma
  • Atypical Meningioma
  • Bladder Cancer Genomics
  • Brain Cancer Genomics
  • Breast Cancer
  • Breast Cancer Chemotherapy
  • Breast Cancer Genomics
  • Cancer
  • Cancer Chemotherapy
  • Cancer During Pregnancy
  • Cancer Genomics
  • Cancer Pain
  • Cancer Rehabilitation
  • Cancer Related Anxiety Disorder
  • Cancer Related Bereavement Disorder
  • Cancer Related Depression
  • Cancer Related Fatigue
  • Cancer Related Psychiatric Disorder
  • Cancer Related Stress Disorder
  • Cancer Risk Assessment
  • Cancer Survivor
  • Carcinoma Of Unknown Primary
  • Cervical Cancer Genomics
  • Chemoradiation
  • Clear Cell Meningioma
  • Clinical Trials
  • Colon Cancer Genomics
  • Colorectal Cancer
  • Crizotinib
  • Egfr Mutation
  • Egfr Translocation
  • Endocrine Complications Of Cancer Therapy
  • Endometrial Cancer Genomics
  • Epithelioid Hemangioendothelioma
  • Epithelioid Malignant Peripheral Nerve Sheath Tumor
  • Erlotinib
  • Fibrous Meningioma
  • Gallbladder Cancer Genomics
  • Gastrointestinal (Gi) Cancer Genomics
  • Genitourinary Cancer Genomics
  • Germinoma
  • Giant Cell Tumor Of The Bone
  • Gynecologic Cancer Genomics
  • Head And Neck Cancer
  • Head And Neck Cancer Genomics
  • Histiocytic Sarcoma
  • Immature Teratoma
  • Leukemia Genomics
  • Liver Cancer Genomics
  • Lung Cancer Genomics
  • Lymphedema Therapy
  • Lymphoma Genomics
  • Melanoma Genomics
  • Melanoma Of The Rectum
  • Melanoma On Foot
  • Melanoma On Leg
  • Melanoma On Toe
  • Melanoma On Trunk
  • Melanoma Surgery
  • Melanotic Schwannoma
  • Meningeal Melanoma
  • Metastatic Liver Cancer
  • Mucosal Melanoma
  • Musculoskeletal Tumor
  • Myeloproliferative Diseases
  • Nasopharyngeal Cancer
  • Non Germinomatous Germ Cell Tumor
  • Non Hodgkin Lymphoma
  • Oral Complications Of Cancer
  • Oral Lesions
  • Pancreatic Cancer Genomics
  • Plasma Cell Dyscrasia
  • Prostate Cancer
  • Prostate Cancer Genomics
  • Pulmonary Metastases
  • Rectal Cancer Genomics
  • Renal Cancer Genomics
  • Retroperitoneal Mass
  • Sarcoma Genomics
  • Side Effects Of Cancer Treatment
  • Skin Cancer Genomics
  • Squamous Cell Carcinoma Of The Head And Neck
  • Squamous Cell Carcinoma Of The Tongue
  • Stomach Cancer Genomics
  • Supratentorial Primitive Neuroectodermal Tumor
  • Targeted Molecular Therapy
  • Teratoma With Malignant Transformation
  • Thoracic Cancer
  • Thyroid Cancer Genomics
  • Tracheal Cancer
  • Unknown Primary Cancer
  • Vaginal Melanoma