| 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
Seeing patients at
Patient Reviews
Patient review summary
Learn about our survey5
4
3
2
1
5.0
65 reviews
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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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Jan 20, 2026Verified Review
Dr kastner is amazing
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Jan 19, 2026Verified Review
using him for over 25 years....always listes,not an alarmist about issues i may have.
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Dec 28, 2025Verified Review
9
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Dec 21, 2025Verified Review
Very happy with ronnie for decades
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Dec 20, 2025Verified Review
EFFECIENCY, CURTICY, RESPONSIVE TO THE NEED IN TERM OF APPOINTMENT MEDICATION REFILLS
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Dec 20, 2025Verified Review
Because he is amazing.
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Dec 18, 2025Verified Review
Dr Kastner never makes me feel rushed, always takes his time and let me know everything thats going on. Great personality and a straight up nice guy.
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Dec 14, 2025Verified Review
I have a terrific and trusting relationship with Dr. Kastner
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Dec 2, 2025Verified Review
I have a good patient/doctor relationship, he listens, and communicates clearly.
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Dec 1, 2025Verified Review
Great doctor
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Nov 18, 2025Verified Review
He’s the best
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Nov 11, 2025Verified Review
He is very conscientious and gives me the proper attention to my medical questions and treatment.
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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 may not reflect all insurance accepted by the provider and is for informational purposes only.
- 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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