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. 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, Aetna, Cigna, UnitedHealthcare 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 and 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, and 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 as a 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 a Hematology / Oncology Specialist like Dr. Gruenstein typically 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. Learn more about our claims-based healthcare methodology.
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:
- 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:
- Unspecified Bleeding Disorder
- Bleeding Disorder
- Coagulation Disorder
- Clotting Problem
ICD-10 Codes:
- D689: Coagulation defect, unspecified
Also known as:
- Chronic Fatigue Syndrome (CFS)
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
- Myalgic encephalomyelitis (ME)
- Long-term tiredness
- Persistent fatigue
ICD-10 Codes:
- R5382: Chronic fatigue, unspecified
Also known as:
- Monoclonal Gammopathy
- Blood Disorder
- Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ)
- MGUS
- Plasma Cell Disorder
- Gammopathy of Undetermined Significance
ICD-10 Codes:
- D472: Monoclonal gammopathy
What procedures does a Hematology / Oncology Specialist like Dr. Gruenstein typically perform?
As a Hematology / Oncology Specialist, procedures performed by 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
Please contact Dr. Gruenstein's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
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
Aetna
Affinity
Agewell
Centers Plan For Healthy Living
CVS Health (formerly Aetna)
Healthfirst New York
Medicare
Service Employees International Union (SEIU)
UnitedHealth Group
Unknown
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.
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. 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
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 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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