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Dr. William Klein, MD

Dr. William Klein, MD

Internal Medicine*
30+ years of experience

Dr. William Klein, MD is an internist in Great Neck, NY and has over 30 years of experience in the medical field. He graduated from Icahn School of Medicine at Mount Sinai in 1994. He is affiliated with medical facilities Staten Island University Hospital and St. Francis Hospital & Heart Center. He is accepting new patients and telehealth appointments.

4.5 Star Rating
Based on 58 reviews 4.5 Star Rating (58 reviews)

Practice

1000 Northern Blvd Ste 230 Great Neck, NY 11021
Telehealth available
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Dr. Klein's Reviews

Likelihood to recommend Dr. Klein

4.5
58 ratings, 34 with a written review
5 star
88%
88%
4 star
0%
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3 star
0%
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2 star
2%
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1 star
10%
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I always see commend Dr. Klein!
Dr. Klein has been my primary care doctor for @15 years. He is a brilliant diagnostician and is familiar with so many of the top doctors in so many specialties. He does not hesitate to direct you to a specialist if necessary.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Apr 23, 2023
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Dr Klein has been my doctor for many many years.He is not only very knowledgeable, very caring and compassionate. I remember I called him once at 10 pm at night and he took care of the issue. One can not ask for a better doctor. Before Dr. Klein, Dr. Edelson has been my primary care physician and Dr. Edelson continues to be my wife's doctor. We have been coming to see both of them for more than 25-30 years. Dr. Edelson correctly diagnosed a blood clot in my leg without knowing that I had taken a long flight before. I must also mention about the staff here - very caring, considerate, kind and passionate. God bless them all.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Pradeep T. – Aug 15, 2019
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I would recommend anyone to see Dr.Klein, he is very efficient very smart, he knows his stuff. Me and my wife have been patients of Dr.klein for many years, we love him.The office is always helpful and pleasant, happy environment.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jack G. – Aug 06, 2019
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I have been seeing Dr Klein for over 20 years. He is an excellent doctor with vast medical knowledge and excellent diagnostic experience.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
R. G. – Jul 09, 2019
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Very considerate. Cares about his patients.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Anonymous – Jun 19, 2019
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the most professional and competent staff I go to. Since Starting with Dr. Edelson in 1995 and being turned over to Dr. Klein in 2002, I have been kept healthy. Any time I needed a specialist, Dr. Klein has always recommended top notch doctors in their field of expertise. The support staff from nurses to administration have also been very friendly and helpful. I look forward to continuing with this practice for many years to come.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Alan T. – Jun 19, 2019
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Dr Klein is one of those doctors that know how to listen, follow the symptoms, connect the dots and save lives. Best physician on Long Island
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mark L. – Jun 11, 2019
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dr. Klein has been my internist for decades and is a wonderful care-giver and diagnostician. I recommend him heartily.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Elly S. – May 28, 2019
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Dr klein is a wonderful and diligent and extremely thorough doctor who has excellent work ethic and very caring and is always available and helpful at all times. He knows his patients and cares about them as if we are all a loving family
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Saul N. – May 16, 2019
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I would be with "Jesus" right now if it weren't for Dr William Klein. He is the BEST!!!! BTW I am a JEW!!!!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jack H. – May 15, 2019
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Dr. Klein takes a lot time to explain and answering questions. He is up to date on the new technology. He is worth every penny and I hope he continues to be as humble and smart as he is today.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
J. C. – May 14, 2019
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Dr.Klein is very knowledgeable, he has been my doctor for over 20 years, i don't know where I would be without his wisdom and medical experience.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Thomas D. – May 10, 2019
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Best MD I have ever been too. Takes the time to talk to you, explain, understand and provide background. You feel like you are his number one patient.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
B. T. – May 09, 2019
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Dr. Klein is a most unique medical diagnostician, formulaton of treatment plans and strategy, and the most comforting, reassuring manner. I have been Dr. Klein's patient for 15 years and I credit my vibrant life while suffering serious injuries and illness to his i care and my trust that no one has my better interest at heart . I trust my life to him. Steven M. Namm smnamm@gmail.com
What went well
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Steve N. – May 01, 2019
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Great every time.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Bill W. – Apr 30, 2019
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I have been been a patient of Dr. Klein for over 23 years, and my husband (now deceased) was a patient as well. Dr. Klein is an excellent diagnostician. I live in a different county and travel a distance to come here, but can't even envision seeing another primary care doctor. The quality of care is excellent. He is so knowledgeable and I have so much confidence in his advice. He takes the time needed to always make me feel comfortable. I have referred friends and fam...
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Deborah R. – Apr 11, 2019
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Dr. Klein is the type of doctor that every patient should have. He's been taking care of our family for years and we're so grateful to have him in our lives.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Andre I. – Apr 04, 2019
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very good
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
R. S. – Apr 02, 2019
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Dr.Klein is the best and so is his staff!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Anonymous – Mar 27, 2019
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Dr Klein always gives me more time, attention and answers than I expect. He is never rushed or dismissive and always makes me comfortable to tell or ask him ANYTHING. He is proactive about my health and wellness and makes sure that I understand everything that is going on with my care!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Anonymous – Mar 26, 2019
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Know Before You Go

About Me

care philosophy

Dr. Klein joined HealthBridge after many years as a full time faculty physician at Mt. Sinai School of Medicine. He is Board Certified in Internal Medicine, and is accepting a limited number of new patients in his Concierge Medicine practice. He...read more

  • Internal Medicine

  • Cosmetic Dermatology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Mt Sinai School Of Med, Internal Medicine

    Residency Hospital

  • Mt. Sinai Medical School

    2006

  • North Shore / Li Jewish Medical Center

    2000

  • Mt Sinai Hospital

    Internship Hospital, 1995

  • Icahn School Of Medicine At Mount Sinai

    Medical School, 1994
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Locations

Practice

North Shore Sleep Medicine1000 Northern Blvd Ste 230 Great Neck, NY 11021
1
  • Call
  • Fax
  • Hours
    • Mon: 8:00am - 8:00pm
    • Tue: 8:00am - 8:00pm
    • Wed: 8:00am - 8:00pm
    • Thu: 8:00am - 8:00pm
    • Fri: 8:00am - 3:30pm
    • Sat: 8:00am - 1:00pm
  • Directions
See all Internal Medicine Doctors in Great Neck, NY