Overview
John Leonard is a Hematologist and an Oncologist practicing medicine in New York, New York. He has been practicing medicine for over 31 years.
Dr. Leonard is highly rated in 24 conditions, according to our data. His clinical expertise encompasses Non-Hodgkin Lymphoma, Follicular Lymphoma, Mantle Cell Lymphoma (MCL), Diffuse Large B-Cell Lymphoma (DLBCL), and Bone Marrow Transplant.
He is actively involved in clinical research, co-authoring 230 peer reviewed articles and participating in 3 clinical trials.
Specialties
Licenses
Hospital Affiliations
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- HMO
- POS
- PPO
Locations
520 E 70th St, New York, NY 10021
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
3 Clinical Trials
David H. Koch Center For Cancer Care At Memorial Sloan Kettering Cancer Center
Alison Moskowitz is a Hematologist and an Oncologist practicing medicine in New York, New York. Dr. Moskowitz is highly rated in 33 conditions, according to our data. Her clinical expertise encompasses T-Cell Lymphoma, Hodgkin Lymphoma, Peripheral T-Cell Lymphoma, Bone Marrow Transplant, and Bone Marrow Aspiration. Dr. Moskowitz is currently accepting new patients.
David H. Koch Center For Cancer Care At Memorial Sloan Kettering Cancer Center
Steven Horwitz is a Hematologist and an Oncologist practicing medicine in New York, New York. Dr. Horwitz is highly rated in 26 conditions, according to our data. His clinical expertise encompasses Peripheral T-Cell Lymphoma, T-Cell Lymphoma, Non-Hodgkin Lymphoma, Anaplastic Large Cell Lymphoma, and Bone Marrow Aspiration. Dr. Horwitz is currently accepting new patients.
David H. Koch Center For Cancer Care At Memorial Sloan Kettering Cancer Center
Gilles Salles is a Hematologist and an Oncologist practicing medicine in New York, New York. Dr. Salles is highly rated in 27 conditions, according to our data. His clinical expertise encompasses Non-Hodgkin Lymphoma, Diffuse Large B-Cell Lymphoma (DLBCL), Follicular Lymphoma, Bone Marrow Transplant, and Splenectomy. Dr. Salles is currently accepting new patients.
Frequently Asked Questions about Dr. John Leonard
How do I make an appointment with Dr. John Leonard?
You can book an appointment with Dr. John Leonard by calling their office at 212-746-2932. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. John Leonard a top-rated expert for Non-Hodgkin Lymphoma?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. John Leonard is classified as an Elite expert for Non-Hodgkin Lymphoma, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. John Leonard specialize in?
While Dr. John Leonard is a Hematology, they have specific expertise in Non-Hodgkin Lymphoma, Follicular Lymphoma, and Mantle Cell Lymphoma (MCL). MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Hematology.
Does Dr. John Leonard participate in research or clinical trials?
Yes. Dr. John Leonard has published 230 articles and abstracts on conditions like Non-Hodgkin Lymphoma. You can view a list of Dr. John Leonard's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. John Leonard accept my insurance?
Dr. John Leonard accepts most major insurance plans, including Aetna and Humana. We recommend calling the office directly at 212-746-2932 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Elite
- B-Cell LymphomaDr. Leonard isElite. Learn about B-Cell Lymphoma.
- Diffuse Large B-Cell Lymphoma (DLBCL)
- Follicular LymphomaDr. Leonard isElite. Learn about Follicular Lymphoma.
- Mantle Cell Lymphoma (MCL)Dr. Leonard isElite. Learn about Mantle Cell Lymphoma (MCL).
- Non-Hodgkin LymphomaDr. Leonard isElite. Learn about Non-Hodgkin Lymphoma.
- Distinguished
- Chronic B-Cell Leukemia (CBCL)Dr. Leonard isDistinguished. Learn about Chronic B-Cell Leukemia (CBCL).
- Chronic Lymphocytic Leukemia (CLL)Dr. Leonard isDistinguished. Learn about Chronic Lymphocytic Leukemia (CLL).
- Gastric LymphomaDr. Leonard isDistinguished. Learn about Gastric Lymphoma.
- Hodgkin LymphomaDr. Leonard isDistinguished. Learn about Hodgkin Lymphoma.
- Lymphofollicular HyperplasiaDr. Leonard isDistinguished. Learn about Lymphofollicular Hyperplasia.
- Marginal Zone Lymphoma (MZL)Dr. Leonard isDistinguished. Learn about Marginal Zone Lymphoma (MZL).
- Advanced
- AgranulocytosisDr. Leonard isAdvanced. Learn about Agranulocytosis.
- Bone Marrow TransplantDr. Leonard isAdvanced. Learn about Bone Marrow Transplant.
- Classical Hodgkin LymphomaDr. Leonard isAdvanced. Learn about Classical Hodgkin Lymphoma.
- Febrile NeutropeniaDr. Leonard isAdvanced. Learn about Febrile Neutropenia.
- Large-Cell Immunoblastic LymphomaDr. Leonard isAdvanced. Learn about Large-Cell Immunoblastic Lymphoma.
- LeukemiaDr. Leonard isAdvanced. Learn about Leukemia.
- Experienced
- Acute Myeloid Leukemia (AML)Dr. Leonard isExperienced. Learn about Acute Myeloid Leukemia (AML).
- Adult T-Cell LeukemiaDr. Leonard isExperienced. Learn about Adult T-Cell Leukemia.
- Anaplastic Large Cell LymphomaDr. Leonard isExperienced. Learn about Anaplastic Large Cell Lymphoma.
- AnemiaDr. Leonard isExperienced. Learn about Anemia.
- Chronic Familial NeutropeniaDr. Leonard isExperienced. Learn about Chronic Familial Neutropenia.
- Chronic T-Cell Leukemia (CTCL)Dr. Leonard isExperienced. Learn about Chronic T-Cell Leukemia (CTCL).