36 Years of Experience
Accepting patients
Online booking
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Gruenstein, Hematology / Oncology Specialist in New York, NY?
Dr. Steven Gruenstein, MD is a Hematology / Oncology Specialist, who primarily practices in New York, NY with 1 additional practice location. He has been practicing for over 36 years and is board certified by the American Board of Internal Medicine. Dr. Gruenstein graduated from University Genoa and completed his residency at Beth Israel Med Ctr, Hematology/Oncology; Beth Israel Med Ctr, Internal Medicine. Dr. Gruenstein is fluent in English, Italian, and Spanish, and is currently seeing new patients. Dr. Gruenstein’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gruenstein’s office at (212) 861-6660.
What are Areas of Expertise for Dr. Gruenstein?
Dr. Steven Gruenstein, 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. Gruenstein empowers patients to confidently navigate their health journey, specializing in Anemias & Red Blood Cell Disorders, Colon & Rectal Cancer, Hematologic Malignancies, Hematology, Leukemia-Chronic Myeloid, Lymphoma, Multiple Myeloma, Telemedicine, or comprehensive wellness support. Serving the New York/NY community, Dr. Gruenstein is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Gruenstein go to medical school and complete their residency?
Fellowship: Beth Israel Med Center
Residency: Beth Israel Med Ctr, Hematology/Oncology; Beth Israel Med Ctr, Internal Medicine | Internal Medicine, Metropolitan Hosp.Center | Beth Israel Med Ctr, Hematology/Oncology Beth Israel Med Ctr, Internal Medicine | Metropolitan Hosp.Center | Beth Israel Deaconess Medical Center Program
Medical School: University Di Genova- Fac Di Med E Chirurgia- Genova- Italy | University Genoa | University degli Studi di Genova Facolty di Medicina e Chirurgia
Is Dr. Gruenstein board certified in Hematology / Oncology Specialist?
Yes, Dr. Steven Gruenstein, MD is board certified by the American Board of Internal Medicine , American Board of Internal Medicine since 1994, American Board of Internal Medicine since 1991, American Board of Internal Medicine since 2001
What languages does Dr. Gruenstein speak?
Dr. Gruenstein and their clinical team can communicate with patients in the following languages:
English
Italian
Spanish
What conditions does Dr. Gruenstein treat?
As a Hematology / Oncology Specialist, Dr. Gruenstein 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. Gruenstein. 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:
- Anemia
- Iron Deficiency Anemia
- Iron
- Low Red Blood Cell Count
- Low Hemoglobin
- Iron deficiency
- Anemia from Iron Lack
- Low Iron Anemia
- Sideropenic Anemia
ICD-10 Codes:
- D649: Anemia, unspecified
- D509: Iron deficiency anemia, unspecified
Also known as:
- Intestinal Malabsorption
- Malabsorption Syndromes
- Nutrient Malabsorption
- Digestive Malabsorption
- Malabsorption Disorder
ICD-10 Codes:
- K909: Intestinal malabsorption, unspecified
Also known as:
- Vitamin B Deficiency
- B Vitamins
- Malnutrition
- B Vitamin Shortage
- Lack of B Vitamins
- Low B Vitamins
ICD-10 Codes:
- E539: Vitamin B deficiency, unspecified
Also known as:
- Chronic Fatigue Syndrome (CFS)
- Fatigue
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
- Myalgic encephalomyelitis (ME)
- Long-term tiredness
- Persistent fatigue
- Tiredness
- Lack of energy
- Exhaustion
ICD-10 Codes:
- R5382: Chronic fatigue, unspecified
- R5383: Other fatigue
Also known as:
- Unspecified Bleeding Disorder
- Bleeding Disorder
- Coagulation Disorder
- Clotting Problem
ICD-10 Codes:
- D689: Coagulation defect, unspecified
Also known as:
- Monoclonal Gammopathy
- Secondary Polycythemia
- Blood Disorder
- Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ)
- MGUS
- Plasma Cell Disorder
- Gammopathy of Undetermined Significance
- High red blood cell count (secondary)
- Excess red blood cells (secondary)
- Acquired polycythemia
ICD-10 Codes:
- D472: Monoclonal gammopathy
- D751: Secondary polycythemia
Also known as:
- Volume Depletion
- Fluid and Electrolyte Balance
- Fluid Loss
- Low Body Fluid
- Hypovolemia
ICD-10 Codes:
- E869: Volume depletion, unspecified
Also known as:
- Thrombocytopenia
- Platelet Disorder
- Low platelet count
- Platelet deficiency
- Bleeding disorder
ICD-10 Codes:
- D696: Thrombocytopenia, unspecified
Also known as:
- Nausea
- Nausea and Vomiting
- Feeling Sick to Stomach
- Queasiness
- Upset Stomach
ICD-10 Codes:
- R110: Nausea
Also known as:
- Chronic Lymphocytic Leukemia
- Chronic Lymphocytic Leukemia Treatment (PDQ®)
- CLL
- B-cell chronic lymphocytic leukemia
- Lymphocytic leukemia
ICD-10 Codes:
- C9110: Chronic lymphocytic leukemia of B-cell type not having achieved remission
Also known as:
- High White Blood Cell Count
- Blood Disorder
- Leukocytosis
- Elevated leukocyte count
- High WBC count
ICD-10 Codes:
- D72829: Elevated white blood cell count, unspecified
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:
- Hereditary Hemochromatosis
- Hemochromatosis
- Hereditary hemochromatosis
- Genetic Iron Overload
- Primary Hemochromatosis
ICD-10 Codes:
- E83110: Hereditary hemochromatosis
Also known as:
- Iron Metabolism Disorder
- Iron
- Metabolic Disorder
- Iron disorder
- Iron overload
- Iron deficiency
ICD-10 Codes:
- E8310: Disorder of iron metabolism, unspecified
Also known as:
- Secondary Bone Cancer
- Bone Cancer
- Metastatic bone cancer
- Cancer spread to bone
- Bone metastases
ICD-10 Codes:
- C7951: Secondary malignant neoplasm of bone
Also known as:
- Palliative Care
- Comfort care
- Supportive care
- Symptom management care
ICD-10 Codes:
- Z515: Encounter for palliative care
Also known as:
- Iron Deficiency
- Iron
- Malnutrition
- Lack of Iron
- Low Iron Levels
- Iron Depletion
ICD-10 Codes:
- E611: Iron deficiency
Which procedures does Dr. Gruenstein perform as a Hematology / Oncology Specialist?
As a Hematology / Oncology Specialist, procedures performed by a Dr. Steven Gruenstein may include:
- 3D Conformal Radiotherapy
- Adaptive Radiation Therapy (ART)
- Adrenalectomy
- Blood Thinning Therapy / Anticoagulation
- Blood Transfusion Consultation
- Blood Transfusion Follow Up
- Bone Excision
- Bone Grafting
For detailed information, please contact Dr. Gruenstein's office.
Does Dr. Gruenstein accept my insurance?
Dr. Gruenstein accepts most major insurance plans. Important: Please call our office at (212) 861-6660 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gruenstein accept in New York, NY?
Dr. Gruenstein 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
Commonwealth Care Alliance
CVS Health (formerly Aetna)
Elderplan
Healthfirst
HealthSmart
MagnaCare Rx
Medicare
Service Employees International Union (SEIU)
UnitedHealthcare
View All Insurances
Where is Dr. Gruenstein's office located?
Dr. Steven Gruenstein's Primary Practice
12 E 86th St Ofc 4
New York, NY 10028
(212) 861-6660
Would you like to schedule an appointment with Dr. Steven Gruenstein?
Dr. Gruenstein has appointments available at his New York, NY office, as well as 1 other location. Please select a location, date, and time below.
Recognitions
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - All Time
Among the most nominated for the Castle Connolly Top Doctor recognition across all time
Doctor’s Choice - 2025
Among the most nominated for the Castle Connolly Top Doctor recognition in 2025
Doctor’s Choice - Last 5 Years
Among the most nominated for the Castle Connolly Top Doctor recognition in the last 5 years
Awards
New York Super Doctors
What is Dr. Gruenstein's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gruenstein's National Provider Identifier (NPI) number is 1407855307.
What common questions do patients ask about Dr. Gruenstein?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gruenstein
What is Dr. Steven Gruenstein's specialty?
Dr. Gruenstein 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. Gruenstein to book an appointment today.
Is this Dr. Steven Gruenstein affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Gruenstein is affiliated with The Mount Sinai Hospital, Lenox Hill Hospital which are a Castle Connolly Top Hospitals. 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 Steven Gruenstein accepting new patients in New York, NY?
Yes, Dr. Steven Gruenstein is accepting new patients at this time.
Does Dr. Steven Gruenstein offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Gruenstein, or call (212) 861-6660 for more information.
How can I make an appointment with Steven Gruenstein?
Please contact Dr. Gruenstein's office at (212) 861-6660 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Steven Gruenstein have?
Dr. Steven Gruenstein is certified by the American Board of Internal Medicine.
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