Dr. John Mascarenhas, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Mascarenhas is offering online scheduling or call the provider’s office for more information.
Dr. John Mascarenhas, MD
Overview of Dr. John Mascarenhas, MD
Dr. John Mascarenhas, MD is a Medical Oncology Specialist in New York, NY. They completed their fellowship with Mt Sinai Sch Med Hosp
Dr. Mascarenhas works at
Dr. Mascarenhas' Office Locations
Ruttenberg Treatment Center1470 Madison Ave Fl 3, New York, NY 10029 DirectionsMonday9:00am - 5:00pmTuesday9:00am - 5:00pmWednesday9:00am - 5:00pmThursday9:00am - 5:00pmFriday9:00am - 5:00pm
Experience & Treatment Frequency
- Blue Cross Blue Shield
- CareFirst Blue Cross Blue Shield
- First Health
* Please verify this information when scheduling an appointment.
Ratings & Reviews
How was your appointment with Dr. Mascarenhas?
Can I give him 1000 stars? I've been in his care since 2014 for a Jak2 MPN condition. He is attentive and caring, and most important he listens and shows compassion. He is primary, my go-to physician. He keeps an eye on me, and follows me carefully. I got misty-eyed visiting YouTube videos featuring Q&As with him. A man on the leading edge of medical breakthroughs takes the time to listen and explain is extraordinary. Always asks about my husband, who is not his patient. I love the guy.
About Dr. John Mascarenhas, MD
- Medical Oncology
Education & Certifications
- Mt Sinai Sch Med Hosp
- Rhode Island Hosp Brown University
- Mount Sinai Hospital
Frequently Asked Questions
Dr. Mascarenhas has an average wait time of 10 – 15 minutes at their office(s).
Dr. Mascarenhas accepts Aetna, Anthem and Blue Cross Blue Shield, and other major insurance plans. Please call ahead to confirm all accepted insurance plans.
Yes, you can schedule an appointment online with Dr. Mascarenhas using Healthline FindCare.
Dr. Mascarenhas has indicated that they do offer telehealth services. Please call the provider’s office at for more information.
Dr. Mascarenhas works at
Dr. Mascarenhas has seen patients for Myeloproliferative Disorders, Thrombocytosis and Bone Marrow Biopsy, and more. You can see other conditions treated by Dr. Mascarenhas on their profile. Please call the provider’s office to confirm all visit reasons.
13 patients have reviewed Dr. Mascarenhas. The overall rating for this provider is 5.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Mascarenhas.
Whether a person prefers to schedule an appointment online or over the phone with Dr. Mascarenhas, there are benefits to both methods. A person calling to schedule an with Dr. Mascarenhas appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.