| Monday | 8:30 AM - 5:00 PM |
|---|---|
| Tuesday | 8:30 AM - 5:00 PM |
| Wednesday | 8:30 AM - 5:00 PM |
| Thursday | 8:30 AM - 5:00 PM |
| Friday | 8:30 AM - 5:00 PM |
| Saturday | Closed |
| Sunday | Closed |
Mark E. Lieb, MD
Specialty
Cardiovascular Disease
Languages
English
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Seeing patients at
Patient Reviews
Patient review summary
Learn about our survey5
4
3
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1
5.0
107 reviews
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Apr 30, 2026Verified Review
He explains things very well, and I always feel like he gives me his full attention and care.
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Apr 26, 2026Verified Review
Competent and interested in what the patient has to say. Does not pander.
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Apr 18, 2026Verified Review
I think he is very easy to work with, very calm, very personable, informative and helpful
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Apr 11, 2026Verified Review
Doctor Lieb is very thorough in his exam and any explaining of my condition. He is caring and has compassion for his patient while maintaining professionalism. By far he is the best doctor that I have chosen to use at Optum. There should be more like him on staff.
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Apr 9, 2026Verified Review
Because he listens and gives, what I believe, is straight forward and honest advice. Offers options and doesn't push meds or procedures you don't want. Overall, he has great patient skills.
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Apr 7, 2026Verified Review
Very easy going and good listening
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Apr 3, 2026Verified Review
He's the best! Kind, caring and an amazing doctor!
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Mar 29, 2026Verified Review
Dr Lieb is very capable of explaining my health assessments and advising how to stay healthy via exercide, diet, medicine, and periodic checkups.
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Mar 29, 2026Verified Review
Dr. is a great doctor. He listens carefully and gives feedback.
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Mar 28, 2026Verified Review
He is detailed, caring kind helpful. He takes good care of my heart health including blood pressure and general well being. I am[omitted] years old and in other departments-sickly
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Mar 27, 2026Verified Review
Great at communicating information.
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Mar 26, 2026Verified Review
Attentive and had reviewed my files and tests prior to appointment. So adjustments that need to be done were discussed and implemented
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Mar 26, 2026Verified Review
Excellent doctor. Personable, highly professional. Very good care.
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Mar 23, 2026Verified Review
Caring , thoughtful and thorough
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Mar 21, 2026Verified Review
Caring and thorough. Great personality
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Mar 19, 2026Verified Review
He is the best
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Mar 19, 2026Verified Review
He is a caring wonderful doctor
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Mar 16, 2026Verified Review
Professionalism, medical knowledge, and thoroughness
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Mar 14, 2026Verified Review
Friendly, knowledgable, accommodating.
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Mar 14, 2026Verified Review
Already got my sister to see him.
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About Mark E. Lieb, MD
Award-winning cardiologist Mark E. Lieb, MD, provides exceptional care for patients with hypertension, elevated cholesterol, and cardiac rhythm disorders. His patient-centered approach emphasizes education and cardiovascular disease prevention. He earned his medical degree from Boston University and completed advanced cardiology training at Mount Sinai. Dr. Lieb has been recognized by Best Doctors in America, Castle Connolly, and regional publications.Philosophy of care
He emphasizes prevention, education, and personalized cardiovascular care.Gender
Male
Board certifications
American Board of Internal Medicine
Licenses
NY, 180753
Employed or contracted
Employed
Network Name
CareMount
NPI
1619921749
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Insurance Accepted
This list is for informational purposes only and may not reflect the most current plans accepted by the provider. Optum accepts most major health insurance plans. Please contact your insurance company to confirm your coverage, eligibility, and the provider's participation in your plan.
- 1199
- Aetna
- Affinity
- Anthem BCBS
- CDPHP
- CHN
- Centivo
- Cigna
- Coventry
- EmblemHealth
- First Health
- Healthfirst
- Humana
- MVP Healthcare
- MagnaCare
- Medicaid
- Medicare
- MetroPlus
- MultiPlan
- NYSHIP
- Northwell Direct
- Oscar
- Oxford
- TRICARE
- UMR
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Medical School
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Boston University School of Medicine
Residency
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Mount Sinai Hospital
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Awards and Publications
The contact information listed will direct you to a licensed representative that works with Medicare enrollees to explain Medicare Advantage and Prescription Drug Plan options. There may not be plans available in your area. Any information provided is limited to those plans offered in your area.
*The contact information listed will direct you to a licensed representative that works with Medicare enrollees to explain Medicare Advantage and Prescription Drug Plan options. There may not be plans available in your area. Any information provided is limited to those plans offered in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
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