Summary

Dr. Alexander Greenstein is a surgeon who brings 23 years of experience to his practice at The Mount Sinai Hospital. He earned his medical degree from Weill Medical College of Cornell University and completed his surgical training through residencies at Mount Sinai Hospital and New York Presbyterian Hospital-Weill Cornell Center, finishing his program in 2009. Dr. Greenstein is fluent in French, Spanish, and English.

Based at The Mount Sinai Hospital in New York, NY, Dr. Greenstein focuses on treating conditions such as abdominal hernias, appendicitis, and performing gallbladder removal procedures. He performs various surgical techniques including minimally invasive laparoscopy and open bowel resection surgery. Patients have given him an average rating of 4.6 on Vitals, reflecting his commitment to quality surgical care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.6
  • 23 years of experience
  • 30 insurance plans accepted
  • speaks French, Spanish, English
  • Mount Sinai Hospital
  • 29 written reviews
  • 2 specialties
  • 2 areas of expertise
  • 3 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

Alexander J Greenstein

5 E 98th StNew York, NY 10029
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

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Alexander J Greenstein, MD
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Alexander J Greenstein, MDDr. Nima Maghami, MDDr. Eung-Mi Lee, MDDr. Teagan Lynn Thorson, DO
SurgerySurgerySurgerySurgery
Accepts New Patients
4.6 
23 Years of Experience 15 Years of Experience 9 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available No Virtual Visit Option
Speaks French, Spanish, English Speaks English Speaks English
New York , NYNew York , NYNew York , NYFlushing , NY
Med School: Weill Medical College of Cornell University Med School: Medical College Of Wisconsin Med School: Tufts University School Of Medicine
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Alexander J Greenstein

  • Accepts Medicare
  • Accepts Medicaid
  • 1199 SEIU
  • 32BJ Health Fund
  • AETNA - Commercial
  • AETNA - Medicare
  • Amidacare Medicaid
  • Anthem/Empire Blue Cross Blue Shield - Commercial
  • Anthem/Empire Blue Cross Blue Shield - HealthPlus Medicaid
  • Centivo
  • CIGNA Healthcare
  • Elderplan
  • EmblemHealth - GHI-PPO
  • EmblemHealth - HIP
  • EmblemHealth - HIP-Medicaid
  • EmblemHealth - HIP-Medicare
  • Fidelis Health Care
  • HealthFirst Medicaid
  • HealthFirst Medicare
  • Horizon NJ
  • Magnacare-Health Care
  • Medicare - NJ
  • Medicare - NY
  • Metroplus
  • Multiplan PHCS
  • NJ Medicaid
  • NY Medicaid
  • Oscar
  • Oxford - Freedom and Liberty
  • United Health Care - Commercial
  • United Health Care - Empire Plan
  • United Health Care - Oxford Care

Medical Specialties

Alexander J Greenstein has the following 2 specialties

Specialty Expertise

Alexander J Greenstein has the following 2 areas of expertise

  • General Surgeon
  • Laparoscopic Surgery (Laparoscopy)

Certifications, License, & Education

23 Years Experience

Alexander J Greenstein holds an expired medical license in the state of New York.

Medical License

Medical Doctor with an expired medical license in the state of New York that expired in 2026.

Education & Training

Residency

Completed their residency at Mount Sinai Hospital in 2009, Mount Sinai Hospital in 2007, and New York Presbyterian Hospital-Weill Cornell Center in 2005.

Medical School

Graduated from Weill Medical College of Cornell University in 2003.

NPI Number

Alexander J Greenstein's NPI number is 1992964035.

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Frequently Asked Questions

Where is Alexander J Greenstein's office located?
Alexander J Greenstein's office is located at 5 E 98th St, New York, NY, 10029.
Does Alexander J Greenstein accept my insurance?
You can see the insurance plans that Alexander J Greenstein accepts on their Vitals profile.
Does Alexander J Greenstein accept virtual/telehealth appointments?
Alexander J Greenstein has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Alexander J Greenstein accepting new patients?
Alexander J Greenstein is accepting new patients on Vitals. View Alexander J Greenstein's profile on Vitals to make an appointment.
What languages does Alexander J Greenstein speak?
Alexander J Greenstein speaks French, Spanish, and English.

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