Leonid Kleynberg, MD

Hematologist & oncologist · Los Angeles, CA

A board-certified hematologist and oncologist who comes to you – at home or by video – for the care of blood disorders and cancer across Los Angeles.

  • Board-certified hematologist & oncologist
  • 40+ years in practice
  • English, Spanish & Russian
  • Los Angeles & nearby

Meet Dr. Kleynberg

Dr. Leonid Kleynberg is a board-certified hematologist and oncologist based in Los Angeles, with more than four decades of clinical experience in the diagnosis and treatment of blood disorders and cancer. He earned his medical degree in 1976 and has been board-certified by the American Board of Internal Medicine in medical oncology and hematology since 1998. He leads Kleynberg Medical Clinic and is known for a compassionate, patient-centered approach – pairing deep clinical experience with evidence-based treatment to support patients through complex diagnoses. He speaks English, Spanish, and Russian.

Medical DegreeMedical school, 1976
Board CertificationInternal Medicine – Medical Oncology & Hematology (ABIM)
Experience40+ years in hematology & oncology
LicensedCalifornia

Services

Oncology CareDiagnosis and treatment of cancer
HematologyCare for blood disorders and related conditions
Infusion TherapySupervised intravenous and infusion treatments
Ongoing SupportContinuity of care through complex treatment

Care Delivered Where You Are

In your home

A cancer or blood-disorder diagnosis is exhausting before a single appointment is added to it. A home visit lets Dr. Kleynberg check in on a patient, review how they're tolerating treatment, and answer questions without the energy it takes to get to a clinic – which matters most on the days when that energy is in short supply. Seeing patients at home also gives a fuller picture of how they're really coping between treatments.

Telehealth

Much of oncology and hematology care is steady follow-up and conversation – reviewing results, weighing the next step, checking on side effects. Over secure video, Dr. Kleynberg can stay closely involved with patients across Los Angeles between visits, and because he speaks English, Spanish, and Russian, families can have these difficult, important conversations in the language they're most comfortable with.

Areas Served

Dr. Kleynberg sees patients across Los Angeles and nearby communities, including:

  • West Hollywood
  • Beverly Hills
  • Beverly Grove
  • Fairfax District
  • Mid-Wilshire
  • Encino
  • Sherman Oaks
Ready to be seen at home?
Request a visit with Dr. Kleynberg and our team will arrange a time that works for you or the people you care for.
Book a Visit

Sofiia Puhach

I am a medical student driven by the intersection of clinical practice, research, and medical communication. As a Medical Editor for Doctor2me, I specialize in refining complex medical information for a broader audience. My academic journey is defined by a commitment to scientific inquiry and a hands-on approach to healthcare, evidenced by my ongoing research work and my volunteer service at a military hospital. I am passionate about contributing to the future of medicine through both evidence-based research and compassionate service.

My clinical curiosity spans the full spectrum of surgical disciplines, though I am most dedicated to the field of neurosurgery.

In my editorial work, I prioritize clinical accuracy by synthesizing data from gold-standard medical sources, including PubMed, the NIH, and the CDC. I ensure every article is grounded in the latest evidence-based research, frequently referencing ClinicalTrials.gov and clinical insights from Harvard Medical School.

My writing aims to serve as a steady roadmap for readers, offering them the science without  'medical-speak'. I believe that when patients have access to credible, peer-reviewed information, they are better equipped to navigate their recovery and treatment.

https://www.doctor2me.com/authors/sofiia-puhach
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