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Dr. John Leonard, MD
Hematology & Oncology*
Dr. John Leonard, MD

Offers telehealth

Dr. John Leonard, MD is a Hematologist Oncologist in New York, NY.
Dr. John Leonard, MD

Dr. John Leonard, MD

Hematology & Oncology*
New York, NY
Accepting new patients
36 years of experience

Offers telehealth

Dr. John Leonard, MD is a Hematologist Oncologist in New York, NY.
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About Dr. John Leonard, MD

Dr. Leonard graduated from University of Virginia / Main Campus. Dr. John Leonard, MD is a Hematologist Oncologist in New York, NY and has 36 years experience. Dr. Leonard currently practices at NYU Langone Hematology Associates and is affiliated with NYU Langone Hospitals and New York-Presbyterian Hospital. Dr. Leonard has experience treating conditions like Non-Hodgkin's Lymphoma, Hodgkin's Disease, Diffuse Large B-Cell Lymphoma and Chronic Lymphocytic Leukemia among other conditions at varying frequencies. Dr. Leonard's office accepts new patients and telehealth appointments. Dr. Leonard also speaks Hungarian. Dr. Leonard is board certified in Hematology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Compare with other Hematologist Oncologists

Compare Dr. Leonard with our nearby Hematologist Oncologists at Newyork-Presbyterian Brooklyn Methodist Hospital
These providers are on the medical staff of Newyork-Presbyterian Brooklyn Methodist Hospital
These providers are on the medical staff of Newyork-Presbyterian Brooklyn Methodist Hospital.
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Experience Check

Enter a condition or procedure
Non-Hodgkin's Lymphoma
Hodgkin's Disease
Diffuse Large B-Cell Lymphoma
Non-Hodgkin's Lymphoma
Hodgkin's Disease
Diffuse Large B-Cell Lymphoma
Chronic Lymphocytic Leukemia
Primary Central Nervous System Lymphoma
Marginal Zone Lymphoma
Follicular Lymphoma Grade 2
Lymphocytosis
Leukocytosis
Hypogammaglobulinemia
Follicular Lymphoma Grade 1
Breast Lump
Nodular Sclerosis Hodgkins Lymphoma
Acquired Hemolytic Anemia
Acute Leukemia
Acute Lymphocytic Leukemia
Acute Lymphoid Leukemia
Acute Myeloid Leukemia
Adult T-Cell Lymphoma
All Lymphoma
Anaplastic Large Cell Lymphoma
Anaplastic Large Cell Lymphoma, ALK Negative
Basal Cell Carcinoma
Blood Disorders
Breast Carcinoma
Burkitt's Lymphoma
Cancer of Cerebral Meninges
Central Nervous System Lymphoma
Chronic Myeloid Leukemia (CML)
Cutaneous Follicle Center Lymphoma
Cutaneous T-Cell Lymphoma
Diffuse Follicle Center Lymphoma
Ductal Carcinoma in Situ
Endocrine Gland Cancer
Esophageal Cancer
Follicular Lymphoma Grade 3
Follicular Lymphoma Grade 3A
Follicular Lymphoma Grade 3B
Gastrointestinal Malabsorption
Hematologic Problems
Hemochromatosis
Hemophilia
Immune Thrombocytopenia
Leukemia
  • View other providers who treat Leukemia
Lymphocytic-Rich Hodgkins Lymphoma
Lymphoma, Large-Cell
Lymphosarcoma
Male Breast Carcinoma
Malignant Mediastinal Tumor
Malignant Pleura Secondary
Mast Cell Diseases
Mature T and NK-Cell Cancer
Mediastinal B-Cell Lymphoma
Merkel Cell Carcinoma
Metastatic Respiratory System Cancer
Mixed-Cellularity Hodgkins Lymphoma
Monoclonal Gammopathy of Uncertain Significance
Multiple Myeloma
Neuroendocrine Tumors
Nodular Lymphocyte-Predominant Hodgkin Lymphoma
Osteopetrosis
Osteosarcoma
Pancreatic Cancer
Peripheral T-Cell Lymphoma
Peritoneal Cancer
Plasma Cell Leukemia
Pleura Cancer
Pleural Cancer
Retroperitoneum Cancer
Soft Tissue Sarcoma
Squamous Cell Carcinoma of Skin
Stomach Cancer
Testicular Cancer
Thrombocytosis
Upper Digestive Tract Cancer
Uterine Cancer
Vitamin B Deficiency
von Willebrand Disease
Advanced Chemotherapy
Biopsy
  • View other providers who treat Biopsy
Blood Product Transfusion
Blood Transfusion
Bone Marrow Biopsy
Diagnostic Evaluation
Genetic Testing
Hematologic Disorder Treatment
Immunotherapy
Medication Management
Pain Management
Plasmapheresis
Radiation Oncology Procedures
Targeted Therapy for Hematologic Cancer

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • BlueCard PPO
  • Connection Blue High Performance Network HPN
    Connection Employer Sponsored
    National Blue High Performance Network HPN
    Empire Hospital/Medical (Trad)
    Blue Acess Employer Sponsored
    Empire Hospital
    Empire Blue Cross Blue Shield PPO
  • MagnaCare PPO
  • BCBS PPO
  • First Health (Coventry Health Care) PPO
  • Navigate HMO
    Options PPO
    Choice Plus POS
    Navigate Plus POS
  • SimplyBlue/Simply Blue Plus PPO
    BluePPO HSA PPO
  • Cigna PPO
    Cigna HMO
    Open Access Plus
  • Liberty
    Freedom
  • Open Choice PPO
    Elect Choice (Open Access) EPO
    Aetna HMO
    Choice Plus POS II
    AWH NJ Choice MultiTier POS II
    AWH NJ Choice MultiTier - Standard Savings
    Managed Choice (Open Access) POS
    Select
    Premier Care Network Plus - Innovation Health
  • HealthyBlue Advantage

Where Dr. John Leonard, MD Sees Patients

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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Leonard?
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(929) 573-0994

Meet Dr. John Leonard, MD

Languages Spoken
Hungarian
Languages Spoken
Specialties*
Hematology & Oncology
Hematology
Medical Oncology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Leonard communicate via email?
16 users said yes.
Yes
(16)
No
(0)
Does Dr. Leonard offer telehealth services or virtual visits?
15 users said yes.
Yes
(15)
No
(1)
Does Dr. Leonard offer an online patient portal?
14 users said yes.
Yes
(14)
No
(0)
Does Dr. Leonard have free onsite parking?
1 user said yes.
Yes
(1)
No
(17)
Does Dr. Leonard offer weekend visits?
No users said yes.
Yes
(0)
No
(12)
Does Dr. Leonard offer evening visits?
No users said yes.
Yes
(0)
No
(11)
Does Dr. Leonard specialize in working with children or adolescents?
No responses yet.
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(0)
No
(0)
Does Dr. Leonard specialize in working with seniors?
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Yes
(0)
No
(0)
Does Dr. Leonard specialize in couples therapy?
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(0)
No
(0)
Does Dr. Leonard specialize in working with LGBTQ+ community?
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Yes
(0)
No
(0)
Does Dr. Leonard accept insurance?
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FAQs About Dr. Leonard's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. John Leonard, MD. To arrange an appointment, call the number on Dr. Leonard's profile.

Dr. Leonard frequently treats the following conditions: Non-Hodgkin's Lymphoma, Hodgkin's Disease, Diffuse Large B-Cell Lymphoma and Chronic Lymphocytic Leukemia. See more on Sharecare.

Dr. John Leonard, MD is affiliated with NYU Langone Hospitals and New York-Presbyterian Hospital.

Yes, Dr. John Leonard, MD holds board certification in Hematology and Medical Oncology.

Training & Medical Education
Medical Education
  • University of Virginia / Main Campus
    1990
Medical Education
Board Certifications
  • Hematology and Medical Oncology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
Internship
  • Newyork-Presbyterian Hospital-Weill Cornell Medical Center
    1991
Internship
Fellowship Hospital
  • Newyork-Presbyterian Hospital-Weill Cornell Medical Center
    1995
Fellowship Hospital

Hospitals Where Dr. John Leonard, MD Practices

  • NYU Langone Hospitals

    550 1st Ave, New York, NY

  • New York-Presbyterian Hospital

    525 E 68th St, New York, NY

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