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Dr. Louis L Greenblatt Is this you?

About Dr. Louis L Greenblatt

Dr. Louis L Greenblatt, DO is a Doctor primarily located in Hauppauge, NY. He has 35 years of experience. His specialties include Geriatric Medicine and Family Medicine. Dr. Greenblatt is affiliated with Stonybrook University Hospital. Dr. Greenblatt has received 4 awards. He speaks English.

Rating Overview

32 Ratings with 9 Comments

The overall average patient rating of Dr. Louis L Greenblatt is Great. Dr. Louis L Greenblatt has been rated by 32 patients. From those 32 patients 9 of those left a comment along with their rating. The overall rating for Dr. Louis L Greenblatt is 4.0 of 5.0 stars.

Mapbox Map of Dr. Louis L Greenblatt

Primary Address

Smithtown Family Medicine

533 Route 111
Hauppauge, NY 11788
Get Directions


Dr. Louis L Greenblatt has the following 2 specialties

  • Geriatric Medicine

    A geriatric specialist is a physician who treats the elderly population and the conditions that most commonly affect them. These doctors have special training in the effects of aging on the body and mind of a patient.
    Geriatric specialists treat common ailments faced by senior citizens, such as frailty, incontinence, memory problems, arthritis, senility, decreased functioning and more.
    In addition, geriatric specialists keep abreast of the different medications that an elderly person is prescribed to treat their more complex health issues in order to decrease adverse side effects and avoid dangerous drug interactions.

  • Family Medicine

    A family practitioner is a doctor who specializes in caring for people of all ages, at all stages of life. Rather than focusing on the treatment of one disease or patient population, family practitioners are often the doctors that people see for their everyday ailments, like cold and flu or respiratory infections, and health screenings. When necessary, family practitioners will provide referrals for conditions that require the expertise of another specialist.
    The doctors may also provide physicals, inoculations, prenatal care, treat chronic diseases, like diabetes and asthma, and provide advice on disease prevention.

  • Expertise

    12 Expertise

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

Board Certifications

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.


Showing 5 of 32

Five Stars

I have been a patient for almost 20 years and find Dr. Greenblatt to be consistently kind, caring, knowledgeable doctor. His staff is very kind, Mrs. Decker in particular, and they are efficient and skilled. His referrals - when I needed - have also been very good, caring doctors. I have had some long waits at times, but mostly get seen within 15 minutes of appointment time.

Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
No longer a patient

I was a patient for almost 8 years and dealt with the rude staff and the 2 hour wait because he was great at first. I will not continue seeing him after he prescribed me a medication and when I needed his help while on vacation he said NO. He didn't offer any other option or solution. I had to come up with it then insist on him calling in the solution. Then his complaint was my insurance "will not cover it and don't expect him to spend half and hour on the phone with my insurance company". I needed this medicine regardless of cost at this point point and guess what the insurance did cover it! I wasted a day being frustrated and treated poorly to the point that I was crying on the phone to him. All of this for migarine medicine that is not a controlled substance. After 8 years of treating me you would think he would be compassionate. I've never cried over treatment from a doctor.

Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Five Stars

Been using Dr. Greenblatt for over 25 years . Can't say enough good things about himself and his staff. They are all very careing .

Wait time
25 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Four Stars

The best doctor ever

Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Fabulous Doctor

Dr. Greenblatt is a kind and compassionate doctor who takes the time to listen to his patients and understand their total health and wellness. He has been the doctor of choice in my famity for over 20 years. I commute from the Bronx because I so dearly value his kind bedside manner and expertise.

Wait time
20 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
  • Awards

    4 Awards

  • Patients' Choice Award (2011, 2009, 2012, 2015, 2013, 2014, 2010)

    Patients' Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients.

  • Compassionate Doctor Recognition (2011, 2015, 2012, 2010, 2016, 2013)

    Compassionate Doctor certification is granted to physicians who treat their patients with the utmost kindness. The honor is granted based on a physician's overall and bedside manner scores.

  • Patients' Choice 5th Anniversary Award (2015, 2013)

    The Patients' Choice Award - 5 Year Honoree is a recognition granted only to those doctors whose ratings have reflected excellence in care for five years in a row. Only 1% of all doctors in the United States are bestowed this honor by their patients.

  • Top Doctors: New York Metro Area (2017)

    Castle Connolly Top Doctors: New York Metro Area™ are specialists and primary care physicians who are highly recommended by their peers and other healthcare professionals. The Castle Connolly research staff reviews both professional qualifications and professional reputation prior to Top Doctor status being awarded. This recognition identifies the top physicians in the New York Metro Area who possess a high level of medical skill and expertise.

  • Hospital Affiliations

    Dr. Greenblatt is affiliated (can practice and admit patients) with the following hospital(s).

  • Education

    35 Years Experience

  • New York College Of Osteopathic Medicine

    Graduated in 1983

  • University Hospital Suny Stony Brook


  • Accepted Insurance

    Dr. Louis L Greenblatt accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna Elect Choice EPO
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna NYC Community Plan
    • Aetna Signature Administrators PPO
  • Capital District Physicians Health Plan
    • CDPHP New York State of Health - Small Business
  • Cigna
    • CIGNA Open Access Plus
  • Connecticare
    • Connecticare Flex Connecticut
  • First Health
    • First Health PPO
  • Humana
    • Humana Choice POS
    • Humana ChoiceCare Network PPO
  • MVP Health Plan
    • MVP Preferred PPO
  • Multiplan
    • Multiplan PPO
    • PHCS PPO
  • Oxford Health
    • Oxford Freedom
    • Oxford Liberty
  • United Healthcare
    • UHC Choice Plus POS
    • UHC Navigate HMO
    • UHC Navigate POS
    • UHC Options PPO
  • View by Location

Locations & Directions

Smithtown Family Medicine, 533 Route 111, Hauppauge, NY


Take a minute to learn about Dr. Louis L Greenblatt in this video.

  • Nearby Doctors

    Dr. Louis L Greenblatt is similar to the following 3 Doctors near Hauppauge, NY.