Dr. Alexander J. Greenstein
- Gender: Male
- Experience: 18 years
- Graduated from: Js Weill Medical College, Cornell University
- Graduation year: 2003
- Sole propriator: No
- NPI: 1992964035
Dr. Alexander J. Greenstein M.D.
Surgeon
He is located at 5 East 98th Street 15th Floor, Box 1259 in New York, NY 10029. Can help patients with the following: Achalasia, Cyst, Gallstones, Heart Disease, Pancreatitis, Sebaceous Cyst. His National Provider Identifier (NPI) number is 1992964035. Appointment can be made via the phone number (212) 241-8679. He also has a website where you can get more information. The website can be found at https://www.zocdoc.com/doctor/alexander-greenstein-md-244152. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. Alexander John Greenstein, being an surgeon, 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. Alexander J. Greenstein.
- Achalasia
- Anal Fissure
- Appendicitis
- Boils
- Cancer
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Ulcerative Colitis
Medicare Enrollment
Dr. Alexander J. Greenstein is enrolled to bill Medicare as a Practitioner - General Surgery .
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
| Gyrus Medical | $350 |
| Cook Medical | $129 |
| Total Joint Orthopedics | $105 |
Other
| Food and Beverage | $414 |
| Consulting | $350 |
Spoken languages
- English
- French
- Spanish
Studies
JS WEILL MEDICAL COLLEGE, CORNELL UNIVERSITY
Graduated in 2003Other ways to reach out
- Website: https://www.zocdoc.com/doctor/alexander-greenstein-md-244152
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Questions & Answers
What conditions does Dr. Alexander John Greenstein treat?
Dr. Alexander John Greenstein provides treatment for Achalasia, Cyst, Gallstones, Heart Disease, Pancreatitis, Sebaceous Cyst. For the full list see this list.
Does Dr. Alexander John Greenstein have affiliation with practices?
Dr. Alexander John Greenstein is affiliated with Mount Sinai Doctors Staten Island. For the full list of practices see this list.
Has Dr. Alexander John Greenstein affiliation with hospitals?
Dr. Alexander John Greenstein is affiliated with MOUNT SINAI HOSPITAL.
Where can you meet with Dr. Alexander John Greenstein?
Dr. Alexander John Greenstein's office is located at 5 East 98th Street 15th Floor, Box 1259 in New York, NY 10029.