Summary

Dr. Leonard Haas specializes in gastroenterology, focusing on digestive system disorders and related health concerns. He earned his medical degree from the prestigious Mayo Clinic Alix School of Medicine and brings eight years of clinical experience to his practice. Dr. Haas provides care in English for patients seeking expert gastrointestinal treatment.

Dr. Haas practices in New Hyde Park and Rockville Centre, New York, offering convenient access to specialized digestive care. He treats patients experiencing abdominal pain and constipation, including expectant mothers dealing with pregnancy-related abdominal discomfort. His expertise includes performing laparoscopic procedures and upper GI endoscopy to diagnose and treat various digestive conditions.

Overview based on verified provider data

Quick Facts

  • 8 years of experience
  • 30 insurance plans accepted
  • speaks English
  • Mayo Clinic Alix School Of Medicine
  • 2 specialties
  • 2 areas of expertise
  • 2 office locations
  • Male

Office Locations

Leonard Haas has 2 locations

Leonard Haas

2800 Marcus Ave Ste 201New Hyde Park, NY 11042
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
ThuClosed
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Leonard Haas

165 N Village Ave Ste 215Rockville Centre, NY 11570
MonClosed
TueClosed
WedClosed
Thu9:00 am - 5:00 pm
FriClosed
SatClosed
SunClosed

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Leonard Haas, MDDr. Mikhail Yakubov, MDDr. Hon-Ming Eng, MDDr. Ghassan Philip Sayegh, DO
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
8 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Russian, Hebrew Speaks English, Cantonese, Chinese, Mandarin, Chinese (Cantonese), Chinese (Mandarin) Speaks English
New Hyde Park , NYNew York , NYNew York , NYYonkers , NY
Med School: Mayo Clinic Alix School Of Medicine Med School: American University Of The Caribbean School Of Medicine Med School: Osteopathic Medical Degree from New York Institute of Technology College of Osteopathic Medicine.
Current Profile
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Insurance Plans Accepted by Leonard Haas

  • Accepts Medicare
  • Aetna
  • Affinity by Molina Healthcare
  • Anthem Blue Cross Blue Shield
  • CDPHP
  • Centivo
  • Cigna
  • Connecticare
  • Consumer Health Network
  • Coventry
  • EmblemHealth Insurance Company
  • EmblemHealth Plan Inc
  • Empire Blue Cross Blue Shield
  • Fidelis
  • First Health Network
  • Great West Healthcare
  • Health Insurance Plan of Greater Network
  • Healthfirst
  • Humana
  • Magnacare
  • Medicare
  • Multiplan
  • MVP Health Care
  • Northwell Direct Network
  • Oscar
  • Oxford
  • Partners Health Plan
  • Private Healthcare Systems
  • The New York State Health Insurance Program
  • Tricare
  • United Healthcare

Medical Specialties

Leonard Haas has the following 2 specialties

Specialty Expertise

Leonard Haas has the following 2 areas of expertise

  • Pediatric Gastroenterology
  • Pediatrics

Certifications, License, & Education

8 Years Experience

Leonard Haas 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

Medical School

Graduated from Mayo Clinic Alix School Of Medicine in 2018.

NPI Number

Leonard Haas' NPI number is 1073019584.

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Frequently Asked Questions

Is Leonard Haas accepting new patients?
Leonard Haas has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Leonard Haas accept my insurance?
You can see the insurance plans that Leonard Haas accepts on their Vitals profile.
What languages does Leonard Haas speak?
Leonard Haas speaks English.
Does Leonard Haas accept virtual/telehealth appointments?
Leonard Haas has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Leonard Haas?
You can find contact information for Leonard Haas here on Vitals.

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