Affiliated with a Castle Connolly Top Hospital
Who is Dr. Mascarenhas, Hematology / Oncology Specialist in New York, NY?
Dr. John Mascarenhas, MD is a Hematology / Oncology Specialist, who primarily practices in New York, NY. He is board certified. Dr. Mascarenhas graduated from New York Medical College and completed his residency at Rhode Island Hospital Brown University. Dr. Mascarenhas is fluent in English and Spanish, and is currently seeing new patients. Dr. Mascarenhas’s practice accepts Medicare, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mascarenhas’s office.
What are Areas of Expertise for Dr. Mascarenhas?
Dr. John Mascarenhas, MD is a highly-rated, board-certified Hematology / Oncology Specialist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Mascarenhas empowers patients to confidently navigate their health journey, specializing in Clinical Trials, Hematologic Malignancies, Leukemia-Chronic Myeloid, Leukemia-Myeloid, Myeloproliferative Disorders, Polycythemia Rubra Vera, Telemedicine, and comprehensive wellness support. Serving the New York, NY community, Dr. Mascarenhas is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Mascarenhas go to medical school and complete their residency?
Residency: Rhode Island Hospital Brown University
Medical School: New York Medical College
Is Dr. Mascarenhas board certified as a Hematology / Oncology Specialist?
Yes, Dr. John Mascarenhas, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Mascarenhas speak?
Dr. Mascarenhas and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Hematology / Oncology Specialist like Dr. Mascarenhas typically treat?
As a Hematology / Oncology Specialist, Dr. Mascarenhas 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. Mascarenhas. 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. Learn more about our claims-based healthcare methodology here.
Also known as:
- Chronic Myeloproliferative Neoplasm
- Myelofibrosis
- Bone Marrow Disease
- Chronic Myeloproliferative Neoplasms Treatment (PDQ®)
- CMPN
- Myeloproliferative disorder
- Chronic blood cancer
- Primary myelofibrosis
- Chronic idiopathic myelofibrosis
- Bone marrow scarring
ICD-10 Codes:
- D471: Chronic myeloproliferative disease
- D474: Osteomyelofibrosis
Also known as:
- Polycythemia vera
- Bone Marrow Disease
- Chronic Myeloproliferative Neoplasms Treatment (PDQ)
- PV
- Primary polycythemia
- Erythremia
ICD-10 Codes:
- D45: Polycythemia vera
Also known as:
- Essential Thrombocythemia
- Platelet Disorder
- Essential thrombocythemia
- Chronic Myeloproliferative Neoplasms Treatment (PDQ)
- ET
- Primary Thrombocythemia
- Hemorrhagic Thrombocythemia
ICD-10 Codes:
- D473: Essential (hemorrhagic) thrombocythemia
Also known as:
- Other Specific Abnormal Blood Chemistry Results
- Blood
- Specified Blood Chemistry Imbalance
- Unusual Blood Chemistry Findings
- Specific Blood Panel Abnormalities
ICD-10 Codes:
- R7989: Other specified abnormal findings of blood chemistry
Also known as:
- Chronic Myeloid Leukemia
- Chronic Myelogenous Leukemia Treatment (PDQ®)
- CML
- Chronic myelogenous leukemia
- Philadelphia chromosome positive leukemia
ICD-10 Codes:
- C9210: Chronic myeloid leukemia, BCR/ABL-positive, not having achieved remission
What procedures does a Hematology / Oncology Specialist like Dr. Mascarenhas typically perform?
As a Hematology / Oncology Specialist, Dr. Mascarenhas performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Mascarenhas. 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. Learn more about our claims-based healthcare methodology here.
Also known as:
- Blood Transfusion
- Blood Transfusion and Donation
- Blood product transfusion
- Red blood cell transfusion
- Plasma transfusion
CPT Codes:
- 36430: Transfusion, blood or blood components
Also known as:
- Bone Marrow Biopsy and Aspiration
- Biopsy
- Bone Marrow Tests
- Bone Marrow Exam
- Bone Marrow Sample Collection
- Diagnostic Bone Marrow Procedure
CPT Codes:
- 38222: Diagnostic bone marrow; biopsy(ies) and aspiration(s)
Does Dr. Mascarenhas accept my insurance?
Dr. Mascarenhas accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Mascarenhas accept in New York, NY?
Dr. Mascarenhas in New York, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Centene Corporation
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
EmblemHealth
Healthfirst New York
Medicare
Molina Healthcare
New York City Health and Hospitals Corporation
State of New York
UnitedHealth Group
View All Insurances
Where is Dr. Mascarenhas' office located?
What is Dr. Mascarenhas's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Mascarenhas's National Provider Identifier (NPI) number is 1376719104.
What common questions do patients ask about Dr. Mascarenhas?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Mascarenhas
What is Dr. John Mascarenhas's specialty?
Dr. Mascarenhas is a Hematology / Oncology Specialist near New York, NY.
What does a Hematology / Oncology Specialist do?
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.
Is this Dr. John Mascarenhas affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Mascarenhas is affiliated with The Mount Sinai Hospital 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
When to see a Hematology / Oncology Specialist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Hematology / Oncology Specialist. Explore 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 Mascarenhas accepting new patients in New York, NY?
Yes, Dr. John Mascarenhas is accepting new patients at this time.
Does Dr. John Mascarenhas offer online booking?
Please contact Dr. Mascarenhas's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Mascarenhas?
Please contact Dr. Mascarenhas's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Mascarenhas have?
Dr. John Mascarenhas is certified by the American Board of Internal Medicine.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>
Connect with DR. Mascarenhas
10 E 102nd St
New York, NY 10029