Summary

Dr. Alexander Greenstein treats abdominal hernia and appendicitis and performs open bowel resection surgery, laparoscopy, and laparoscopic gallbladder removal surgery. He practices surgery in New York, NY, and is affiliated with The Mount Sinai Hospital. He has 23 years of experience and speaks English, French, and Spanish.

He earned his medical degree from Weill Medical College of Cornell University and completed residencies at Mount Sinai Hospital and New York Presbyterian Hospital-Weill Cornell Center. Patients on Vitals rate Dr. Greenstein 4.57 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.6
  • 23 years of experience
  • 30 insurance plans accepted
  • speaks English, French, Spanish
  • Mount Sinai Hospital
  • 29 written reviews
  • 2 specialties
  • 2 areas of expertise
  • 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, MDGiacomo Montagna, MDJavier O Mejia, MDDr. Ziyad T.s. Nasrawi, MD
SurgerySurgerySurgerySurgery
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.6 
0 
0 
4.1 
23 Years of Experience 15 Years of Experience 7 Years of Experience 11 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available No Virtual Visit Option
Speaks English, French, Spanish Speaks English, French, Italian Speaks English
New York , NYNew York , NYNew York , NYBrooklyn , NY
Med School: Weill Medical College of Cornell University Med School: Harvard T.H. Chan School of Public Health Boston MA Med School: Icahn School Of Medicine At Mount Sinai Med School: Medical College Of Georgia At Augusta University
Current Profile
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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

Which hospitals is Alexander Greenstein affiliated with?
Alexander Greenstein is affiliated with The Mount Sinai Hospital.
Does Alexander Greenstein accept my insurance?
You can see the insurance plans that Alexander Greenstein accepts on their Vitals profile.
How can I make an appointment with Alexander Greenstein?
You can find contact information for Alexander Greenstein here on Vitals.
Does Alexander Greenstein accept virtual/telehealth appointments?
Alexander Greenstein has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Alexander Greenstein accepting new patients?
Alexander Greenstein is accepting new patients on Vitals. View Alexander Greenstein's profile on Vitals to make an appointment.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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