Summary

Dr. Louis Greenblatt is a family medicine physician who also specializes in geriatric medicine, bringing over four decades of medical expertise to his practice. He earned his medical degree from the New York Institute of Technology College of Osteopathic Medicine and completed his residency at University Hospital SUNY Stony Brook. With 43 years of experience caring for patients, Dr. Greenblatt provides comprehensive healthcare across all age groups while offering specialized care for older adults. He speaks English with his patients.

Dr. Greenblatt maintains affiliations with Saint Catherine of Siena Medical Center and Saint Johns Episcopal Hospital South Shore, with practice locations in Hauppauge, Stony Brook, and Smithtown, New York. His clinical expertise includes treating high cholesterol in children and teens, hyperlipidemia, and familial lipid disorders. He performs various diagnostic procedures including blood tests and urine tests, and coordinates physical therapy when needed. Patients have given Dr. Greenblatt an average rating of 4.1 stars for his care.
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Overview based on verified provider data

Quick Facts

  • 4.1
  • 43 years of experience
  • 38 insurance plans accepted
  • speaks English
  • University Hospital Suny Stony Brook
  • 11 written reviews
  • 2 specialties
  • 12 areas of expertise
  • 2 board certifications
  • 2 hospital affiliations
  • 3 office locations
  • Male

Patients’ Perspective

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

Office Locations

Dr. Louis Leonard Greenblatt has 3 locations

Smithtown Family Medicine

533 Route 111Hauppauge, NY 11788
Mon10:00 am - 5:00 pm
Tue12:00 pm - 5:00 pm
Wed12:00 pm - 5:00 pm
ThuClosed
Fri10:00 am - 5:00 pm
Sat9:00 am - 12:00 pm
SunClosed

Stony Brook University Hospital

101 Nicolls RdStony Brook, NY 11794

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Dr. Louis Leonard Greenblatt, DOOlivia Louis-Jacques, FNP-BCDr. Iquinder P Singh, MDDr. Maria C. Hernandez, MD
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Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
43 Years of Experience 20 Years of Experience 57 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks English, Spanish, Hindi, Punjabi Speaks Spanish, English
Hauppauge , NYSmithtown , NYPlainview , NYHuntington Station , NY
Med School: New York Institute Of Technology College Of Osteopathic Medicine Med School: Ross University School Of Medicine Med School: Universidad Autonoma De Guadalajara Facultad De Medicina
Current Profile
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Insurance Plans Accepted by Dr. Louis Leonard Greenblatt

  • Accepts Medicaid
  • AARP
  • Aetna
  • Aetna - Medicare
  • Aetna - POS
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - PPO
  • Cigna
  • Cigna - PPO
  • EmblemHealth
  • EmblemHealth - PPO
  • Empire Blue Cross Blue Shield
  • Fidelis Care (NY)
  • Golden Rule
  • HealthFirst (NY)
  • Humana
  • Humana - Medicare (Advantage HMO)
  • MagnaCare
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicaid (Managed)
  • Medicare - Medicare
  • Meritain Health
  • Oscar Health Insurance
  • Palmetto GBA
  • Palmetto GBA - Medicare
  • Travelers
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - Medicare (Advantage HMO)
  • UnitedHealthcare Oxford
  • UnitedHealthcare Oxford - HMO
  • UnitedHealthcare Oxford - PPO
  • Wellcare

Medical Specialties

Dr. Louis Leonard Greenblatt has the following 2 specialties

Specialty Expertise

Dr. Louis Leonard Greenblatt has the following 12 areas of expertise

  • Alzheimer's Disease
  • Cognitive Issues/Testing
  • Confusion
  • Dementia
  • Dementia Testing
  • EOL Care
  • Geriatric Medicine
  • Osteopenia
  • Osteoporosis
  • Preventive Medicine
  • Senility
  • Urinary Incontinence

Certifications, License, & Education

43 Years Experience

Dr. Louis Leonard Greenblatt holds an active medical license in the state of New York.

Medical License

Doctor Of Osteopathy with an active medical license in the state of New York that expires in 2027.

Education & Training

Residency

Completed their residency at University Hospital Suny Stony Brook.

Medical School

Graduated from New York Institute Of Technology College Of Osteopathic Medicine in 1983.

NPI Number

Dr. Greenblatt's NPI number is 1891710307.

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Frequently Asked Questions

How can I make an appointment with Dr. Louis Greenblatt?
You can find contact information for Dr. Louis Greenblatt here on Vitals.
Where is Dr. Louis Greenblatt's office located?
Dr. Louis Greenblatt's office is located at 533 Route 111, Hauppauge, NY, 11788.
What languages does Dr. Louis Greenblatt speak?
Dr. Louis Greenblatt speaks English.
Does Dr. Louis Greenblatt accept virtual/telehealth appointments?
Dr. Louis Greenblatt has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Louis Greenblatt affiliated with?
Dr. Louis Greenblatt is affiliated with Saint Catherine Of Siena Medical Center and Saint Johns Episcopal Hospital South Shore.

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