Dr. John O. Mascarenhas
- Gender: Male
- Experience: 19 years
- Graduated from: New York Medical College
- Graduation year: 2002
- Sole propriator: Yes
- NPI: 1376719104
Dr. John O. Mascarenhas MD
Hematology and Oncology Specialist
He is located at 1 Gustave L Levy Place Box 1079 in New York, NY 10029. Can help patients with the following: Asthma, Fever, Hemophilia, Idiopathic Thrombocytopenic Purpura (ITP), Prescription Refill, Pulmonary Embolism (PE). His National Provider Identifier (NPI) number is 1376719104. Appointment can be made via the phone number (212) 241-1948. He also has a website where you can get more information. The website can be found at https://www.zocdoc.com/doctor/john-mascarenhas-md-248471. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. John Mascarenhas, being an hematology and oncology specialist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John O. Mascarenhas.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Beta Thalassemia
- Bladder Control
- Blood Clots
- Bone Cancer
- Cancer
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Deep Vein Thrombosis (DVT)
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hemophilia
- Hiatal Hernia
- High Blood Pressure
- Hodgkin's Disease
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Idiopathic Thrombocytopenic Purpura (ITP)
- Influenza
- Inguinal Hernia
- Leukemia
- Migraine
- Multiple Myeloma
- Nausea and Vomiting
- Neutropenia
- Non-Hodgkin's Lymphoma (NHL)
- Obesity
- Osteoporosis
- Peptic Ulcer
- Pernicious Anemia
- Polycythemia
- Prescription Refill
- Pulmonary Embolism (PE)
- Sickle Cell Anemia
- Thalassemia
- Thrombocytopenia
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. John O. Mascarenhas
Medicare Enrollment
Dr. John O. Mascarenhas is enrolled to bill Medicare as a Practitioner - Hematology .
Bills through: Icahn School Of Medicine At Mount Sinai
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Incyte | $47820 |
| F Hoffmann-La Roche | $20821 |
| Celgene | $8742 |
Other
| Consulting | $51150 |
| Travel and Lodging | $15189 |
| Promotional Speaking or Service | $14794 |
| Food and Beverage | $1484 |
Studies
NEW YORK MEDICAL COLLEGE
Graduated in 2002Other ways to reach out
- Website: https://www.zocdoc.com/doctor/john-mascarenhas-md-248471
Additional Specialities
- Hematologist
- Internist
Looking for more Hematology and Oncology Specialists?
Out of the 32 hematology and oncology specialists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Female
- Address: Mount Sinai Hospital-Ruttenberg Treatment Center 1190 5th Avenue New York, 10029, NY
- Gender: Male
- Address: 1190 5th Avenue New York, 10029, NY
- Gender: Male
- Address: 10 East 102nd Street New York, 10029, NY
- Gender: Female
- Address: 4th Fl 1468 Madison Ave New York, 10029, NY
- Gender: Male
- Address: 1190 5th Avenue New York, 10029, NY
- Gender: Male
- Address: Mount Sinai Medical Center 1 Gustave L Levy Place New York, 10029, NY
- Gender: Female
- Address: 300 Pasteur Drive Stanford, 94305, CA
- Gender: Male
- Address: 1 Gustave L Levy Place New York, 10029, NY
- Gender: Male
- Address: Mount Sinai Hospital Ruttenberg Treatment Center Hem 1190 5th Avenue New York, 10029, NY
Questions & Answers
What conditions does Dr. John Mascarenhas treat?
Dr. John Mascarenhas provides treatment for Asthma, Fever, Hemophilia, Idiopathic Thrombocytopenic Purpura (ITP), Prescription Refill, Pulmonary Embolism (PE). For the full list see this list.
Where can you meet with Dr. John Mascarenhas?
Dr. John Mascarenhas's office is located at 1 Gustave L Levy Place Box 1079 in New York, NY 10029.
Does Dr. John Mascarenhas have affiliation with practices?
Dr. John Mascarenhas is affiliated with Mount Sinai Doctors Staten Island. For the full list of practices see this list.
Has Dr. John Mascarenhas affiliation with hospitals?
Dr. John Mascarenhas is affiliated with MOUNT SINAI HOSPITAL.