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Dr. John Mascarenhas, MD

Medical Oncology* Age 51
Dr. John Mascarenhas, MD
4.7 (15 Ratings)

Offers telehealth

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Dr. John Mascarenhas, MD is a Medical Oncologist in New York, NY.
Dr. John Mascarenhas, MD
4.7 (15 Ratings)
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Dr. John Mascarenhas, MD

Medical Oncology* Age 51
New York, NY
Accepting new patients

Offers telehealth

Dr. John Mascarenhas, MD is a Medical Oncologist in New York, NY.

About

Dr. John Mascarenhas, MD is a Medical Oncologist in New York, NY. Dr. Mascarenhas currently practices at Ruttenberg Treatment Center and are affiliated with Mount Sinai Hospital. Dr. Mascarenhas has experience treating conditions like Thrombocytosis, Chronic Myeloid Leukemia (CML) and Myeloproliferative Disorders among other conditions at varying frequencies. At present, Dr. Mascarenhas received an average rating of 4.7/5 from patients and has been reviewed 15 times. Dr. Mascarenhas' office accepts new patients and telehealth appointments. Dr. Mascarenhas is board certified in Hematology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Locations

  1. 1 The Ruttenberg Treatment Center
    1470 Madison Ave Fl 3, New York, NY 10029

Experience and Background Check

Thrombocytosis
Chronic Myeloid Leukemia (CML)
Myeloproliferative Disorders
Thrombocytosis
Chronic Myeloid Leukemia (CML)
Myeloproliferative Disorders
Acute Leukemia
Polycythemia Rubra Vera
Chronic Myelomonocytic Leukemia
Myelodysplastic Syndromes
Pancytopenia
Acute Lymphoid Leukemia
Acute Myeloblastic Leukemia Type 3
Acute Myeloid Leukemia
Anemia
  • View other providers who treat Anemia
Bleeding Disorders
Coagulation Disorders
Leukocytosis
Mast Cell Diseases
Neutropenia
Retroperitoneum Cancer
Venous Embolism and Thrombosis
Bone Marrow Biopsy
Acquired Hemolytic Anemia
Acute Monocytic and Monoblastic Leukemia
Acute Myeloid Leukemia Multilineage Dysplasia
Acute Myeloid Leukemia with 11q23 Abnormality
Acute Myelomonocytic Leukemia
Acute Panmyelosis with Myelofibrosis
Anaplastic Large Cell Lymphoma
Anaplastic Large Cell Lymphoma, ALK Positive
Antiphospholipid Syndrome (APS)
Basal Cell Carcinoma
Benign Lung Neoplasms
Benign Neoplasm of Brain
Biliary Tract Cancer
Bladder Cancer
Blood Disorders in Pregnancy
Bone Cancer
Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
Brain Cancer
Breast Cancer
Breast Lump
Central Nervous System Lymphoma
Cholangiocarcinoma
Chordoma
  • View other providers who treat Chordoma
Chronic Lymphocytic Leukemia
Coagulation Defects in Pregnancy and Postpartum
Colorectal Cancer
Constitutional Aplastic Anemia
Cranial Nerve Cancer
Deep Vein Thrombosis (DVT)
Diffuse Large B-Cell Lymphoma
Drug Induced Aplastic Anemia
Duodenal Cancer
Endocrine Gland Cancer
Gallbladder and Biliary Tract Cancer
Head and Neck Cancer
Hemochromatosis
Hemophilia
Hodgkin's Disease
Hypercoagulable State
Immune Thrombocytopenia
Immune Thrombocytopenic Purpura (ITP)
Kidney Cancer
Laryngeal Cancer
Leukocytopenia
Liver Cancer
Lung Cancer
Lymphocytopenia
Lymphocytosis
Lymphoma, Large-Cell
Lymphosarcoma
Macroglobulinemia (incl. Waldenstrom's )
Malignant Pituitary Gland Tumor
Marginal Zone Lymphoma
Maternal Anemia
Mediastinal B-Cell Lymphoma
Melanoma
  • View other providers who treat Melanoma
Metastatic Respiratory System Cancer
Myeloma
  • View other providers who treat Myeloma
Neuroendocrine Tumors
Nodular Lymphoma
Non-Hodgkin's Lymphoma
Nose Cancer
Oral Cancer
Osteosarcoma
Ovarian Cancer
Paroxysmal Nocturnal Hemoglobinuria
Pernicious Anemia
Pineal Region Tumors
Pituitary Tumor
Primary Central Nervous System Lymphoma
Primary Hypercoagulable State
Prostate Cancer
Purpura
  • View other providers who treat Purpura
Qualitative Platelet Defects (incl. Glanzmann's Thrombasthenia)
Reticulosarcoma
Secondary Malignancies
Skin Cancer
Small Intestine Cancer
Squamous Cell Carcinoma of Skin
Stomach and Small Intestine Cancer
Stomach Cancer
Thalassemia
Thalassemia Minor
Throat Cancer (Nasopharyngeal)
Thyroid Cancer
Upper Digestive Tract Cancer
Urinary Tract Cancer
Uterine Cancer
Vitamin B Deficiency
Vitamin B12 Anemia
Vitamin B12 Deficiency
von Willebrand Disease
Anemia and Iron Deficiency Screening
Bone Marrow Evaluation
Erythropoietin Test
Leukemia Diagnostic Evaluations
Lymphoma Evaluation
Plasmapheresis
Thoracentesis

Patient Satisfaction

Likelihood to recommend Dr. Mascarenhas
4.7
Based on 15 Reviews
5 Stars (14)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (1)

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How likely are you to recommend Dr. Mascarenhas?

(Select your rating)
Patient Reviews
Nov 07, 2023
One of the smartest most caring specialists. He is by far the best MPN specialist in the country and just a very nice guy!!!
Cary Gruber — Nov 07, 2023
See more reviews on Healthgrades
Photo: Dr. John Mascarenhas, MD
How would you rate your experience with Dr. John Mascarenhas, MD?
  • Likelihood of recommending Dr. Mascarenhas to family and friends

Dr. Mascarenhas' Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Mascarenhas

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Curative PPO Plus
    Curative PPO
    Curative EPO
  • Choice Care PPO
  • MultiPlan PPO
  • National (BlueCard) PPO
    Empire (Select Network)-NY POS
    Blue Priority (Select Network)-NY
    Blue Access (Select Network)-NY
    National (BlueCard Basic) PPO
  • Blue Card PPO
  • Personal Choice PPO
  • First Health (Coventry Health Care) PPO
  • Cigna
    Cigna PPO
    Open Access Plus
  • Choice Plus POS II
    Aetna
    Select
  • HealthyBlue 2.0
    HealthyBlue Advantage

About Me

Biography
  • Dr. John Mascarenhas, MD is a medical oncologist in New York, NY. He specializes in Medical Oncology and Hematology & Oncology.
Biography
Specialties*
Medical Oncology
Hematology & Oncology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Board Certifications

Board Certifications
  • Hematology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Residency

Residency Hospital
  • Rhode Island Hospital Brown University
    2005
Residency Hospital

Fellowship

Fellowship Hospital
  • Mt Sinai School of Medicine Hospital
    2008
Fellowship Hospital
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Mascarenhas communicate via email?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas offer telehealth services or virtual visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas offer an online patient portal?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas have free onsite parking?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas offer weekend visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas offer evening visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Mascarenhas specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mascarenhas specialize in working with seniors?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mascarenhas specialize in couples therapy?
No responses yet.
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(0)
No
(0)
Does Dr. Mascarenhas specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Mascarenhas accept insurance?
No responses yet.
Yes
(0)
No
(0)

Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. John Mascarenhas, MD. To arrange an appointment, call the number on Dr. Mascarenhas' profile.

Dr. Mascarenhas frequently treats the following conditions: Thrombocytosis, Chronic Myeloid Leukemia (CML) and Myeloproliferative Disorders. See more on Sharecare.

Dr. John Mascarenhas, MD is affiliated with Mount Sinai Hospital.

Yes, Dr. John Mascarenhas, MD holds board certification in Hematology.

Hospital Affiliations

  • Mount Sinai Hospital

    1 Gustave L Levy Pl, New York, NY

Dr. John Mascarenhas, MD

Dr. John Mascarenhas, MD

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