| Monday | 9:00 AM - 5:00 PM |
|---|---|
| Tuesday | 9:00 AM - 5:00 PM |
| Wednesday | 9:00 AM - 5:00 PM |
| Thursday | 9:00 AM - 5:00 PM |
| Friday | 9:00 AM - 4:30 PM |
| Saturday | Closed |
| Sunday | Closed |
Ron E. Kastner, MD
Specialty
Internal Medicine
Languages
English
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Seeing patients at
Patient Reviews
Patient review summary
Learn about our survey5
4
3
2
1
5.0
69 reviews
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Apr 29, 2026Verified Review
A caring thorough doctot
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Apr 28, 2026Verified Review
Because he knows what he’s doing
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Apr 28, 2026Verified Review
Very likely. He is a wonderful physician who I trust
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Apr 27, 2026Verified Review
First time visit. Very happy with Dr Kastner!
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Apr 16, 2026Verified Review
Great Dr.
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Apr 10, 2026Verified Review
Dr Kastner is very thorough and very caring. He answers every question you have and makes good re omendstions . He addresses every concern with ease and expertise .
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Apr 8, 2026Verified Review
Dr. Kastner is very efficient and explains things well. He genuinely cares about his patients from my experience. I couldn't ask for more.
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Apr 8, 2026Verified Review
He is a smart excellent doctor
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Apr 6, 2026Verified Review
Dr Kastner has always been responsive to my needs. I have extreme confidence that he has my well being in mind whenever I am in his presence.
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Apr 4, 2026Verified Review
Dr. Kastner is a great doctor and has helped me for many years and I am very grateful for his care and kindness
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Apr 4, 2026Verified Review
Great doctor knows his stuff
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Apr 1, 2026Verified Review
He was extremely helpful and addressed my problem . He was very knowledgeable and I felt confident in his care.
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Mar 21, 2026Verified Review
He is a great Dr whom I trust completely
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Mar 18, 2026Verified Review
Dr. Kastner is a very kind, caring physician. He is very professional and thorough.
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Mar 13, 2026Verified Review
Makes you feel comfortable at exam. Goes over all test results. Makes recommendations carefully so you can understand
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Mar 10, 2026Verified Review
He’s the BEST!
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Mar 5, 2026Verified Review
Great doctor
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Feb 26, 2026Verified Review
Very caring, thorough, listens, explains
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Feb 23, 2026Verified Review
Exam not thorough.
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Jan 24, 2026Verified Review
He is very professional and is concerned about your needs
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About Ron E. Kastner, MD
Dr. Ron E. Kastner is a board certified internist. He completed medical school at New York University and residency at Mount Sinai Hospital.Philosophy of care
Dr. Kastner provides comprehensive primary care with a focus on continuity and prevention.Gender
Male
Board certifications
American Board of Internal Medicine
Licenses
NY, 198283
Employed or contracted
Employed
Network Name
ProHealth
NPI
1134200058
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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
- CHN
- Centivo
- Cigna
- Coventry
- EmblemHealth
- First Health
- Humana
- MagnaCare
- Medicaid
- Medicare
- MultiPlan
- NYSHIP
- Northwell Direct
- Oscar
- Oxford
- TRICARE
- UHC
- UMR
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Medical School
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New York University School Of Medicine
Residency
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Mount Sinai Medical Center
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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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