Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Leonard, Hematology / Oncology Specialist in New York, NY?
Dr. John Leonard, MD is a Hematology / Oncology Specialist, who primarily practices in New York, NY. He is board certified. Dr. Leonard graduated from UNIVERSITY OF VA SCH OF MED HLTH SYS and completed his residency at Ny & Presby Hp-Cornell Campus, Hematology/Oncology; Ny & Presby Hp-Cornell Campus, Internal Medicine. Dr. Leonard is fluent in English and Spanish, and is currently seeing new patients. Dr. Leonard’s practice accepts Medicaid, Medicare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Leonard’s office at (917) 300-0553.
WebsiteWhat are Areas of Expertise for Dr. Leonard?
Dr. John Leonard, MD is a highly-rated, board-certified Hematology / Oncology Specialist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Leonard empowers patients to confidently navigate their health journey, specializing in Hematologic Malignancies, Lymphoma, or comprehensive wellness support. Serving the New York/NY community, Dr. Leonard is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Leonard go to medical school and complete their residency?
Residency: Ny & Presby Hp-Cornell Campus, Hematology/Oncology; Ny & Presby Hp-Cornell Campus, Internal Medicine
Medical School: University of Va Sch of Med, Charlottesville Va | University of Virginia | UNIVERSITY OF VA SCH OF MED HLTH SYS | University of Virginia Medical School
What languages does Dr. Leonard speak?
Dr. Leonard and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Leonard treat?
As a Hematology / Oncology Specialist, Dr. Leonard diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Leonard. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Non-Hodgkin Lymphoma
- Follicular Lymphoma
- B-cell Lymphoma
- Mantle Cell Lymphoma
- Lymphoma
- Lymphatic Cancer
- Lymphosarcoma
- NHL
- Follicular Non-Hodgkin Lymphoma
- FL
- Nodular Lymphoma
- B-cell Non-Hodgkin Lymphoma
- B-NHL
- B-cell Lymphosarcoma
- MCL
- Mantle Cell Lymphoma Cancer
ICD-10 Codes:
- C8590: Non-Hodgkin lymphoma, unspecified, unspecified site
- C8290: Follicular lymphoma, unspecified, unspecified site
- C8510: Unspecified B-cell lymphoma, unspecified site
- C8310: Mantle cell lymphoma, unspecified site
Also known as:
- Immune Deficiency
- Immune System and Disorder
- Weak Immune System
- Immune System Disorder
ICD-10 Codes:
- D849: Immunodeficiency, unspecified
Does Dr. Leonard accept my insurance?
Dr. Leonard accepts most major insurance plans. Important: Please call our office at (917) 300-0553 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Leonard accept in New York, NY?
Dr. Leonard in New York, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
All Other Third Party
Corporate Services
CVS Health (formerly Aetna)
EmblemHealth
Express Scripts
Medicaid
Medicare
National Benefit Fund
Service Employees International Union (SEIU)
View All Insurances
Where is Dr. Leonard's office located?
Perlmutter Cancer Center/NYU Langone Health
240 East 38th Street, 19th Floor
Starr Pavilion, 3rd Floor
New York, NY 10016
(917) 300-0553
What is Dr. Leonard's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Leonard's National Provider Identifier (NPI) number is 1992892079.
What common questions do patients ask about Dr. Leonard?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Leonard
What is Dr. John Leonard's specialty?
Dr. Leonard is a Hematology / Oncology Specialist near New York, NY. An internist doctor of osteopathy specializing in the combined treatment of hematology and oncology disorders. A doctor of osteopathy who is board eligible or certified by the American Osteopathic Board of Internal Medicine was previously able to obtain a Certificate of Special Qualifications in Hematology and Oncology; however, this certificate is no longer available. Contact Dr. Leonard to book an appointment today.
Is this Dr. John Leonard affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Leonard is affiliated with NewYork-Presbyterian Hospital/Weill Cornell Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Hematology / Oncology Specialist?
Explore Hematology / Oncology Specialist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Leonard accepting new patients in New York, NY?
Yes, Dr. John Leonard is accepting new patients at this time.
Does Dr. John Leonard offer online booking?
Please contact Dr. Leonard's office at (917) 300-0553 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Leonard?
Please contact Dr. Leonard's office at (917) 300-0553 for information regarding telehealth appointment availability or for scheduling assistance.
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Connect with DR. Leonard
Sponsored
Perlmutter Cancer Center/NYU Langone Health
240 East 38th Street, 19th Floor
New York, NY 10016