


Dr. Mitchell Kleinberg, MD
Dr. Mitchell Kleinberg, MD is a pediatrician in Port Jefferson, NY and has over 40 years of experience in the medical field. He graduated from City University of New York School of Medicine in 1980. He is affiliated with medical facilities such as Stony Brook University Hospital and Newyork-Presbyterian Queens. He is accepting new patients and telehealth appointments.
Optum Pediatrics - Port Jefferson
125 Oakland Ave Port Jefferson, NY 11777At a Glance
- Area of Expertise
- Explains Conditions Well
- Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
- Practices at Top Hospital

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Dr. Kleinberg's Reviews
Likelihood to recommend Dr. Kleinberg
4.6
5 Star | 89% | 89% |
4 Star | 0% | 0% |
3 Star | 0% | 0% |
2 Star | 0% | 0% |
1 Star | 11% | 11% |
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How was your experience with Dr. Kleinberg?Overall Patient Satisfaction
Likelihood of recommending Dr. Kleinberg to family and friends is 4.5555553 out of 5
About Me
biography
Dr. Mitchell Kleinberg, MD is a pediatrician in Port Jefferson, NY and has over 40 years of experience in the medical field. He graduated from City University of New York School of Medicine in 1980. He is affiliated with medical facilities such...read morePediatrics
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
City University Of New York School Of Medicine
Medical School, 1980
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
Optum Pediatrics - Port Jefferson
Optum Pediatrics - Holbrook
Optum Pediatrics - Wading River
Affiliated Hospitals
- Recipient of 24
hospital awardsOutstanding Patient Experience Award™ (2024, 2023, 2022)
Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions
View all awardsPatient Safety Excellence Award™ (2024, 2023)
Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions
View all patient feedbackHow patients felt about the care they received at this hospital.
91%Patients said they were given information about recovering at home7% higher than the national average
89%Patients would recommend the hospital to friends and family24% higher than the national average
- Recipient of 1
hospital awardView all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
77%Patients said that nurses always listened to them and explained things well2% higher than the national average
- Recipient of 33
hospital awardsAmerica's 100 Best Hospitals Award™ (2025, 2024, 2023)
Top 5% in the nation for consistently delivering clinical quality
View all awardsAmerica's 250 Best Hospitals Award™ (2025, 2024, 2023)
Top 5% in the nation for consistently delivering clinical quality
View all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
74%Patients said that doctors always listened to them and explained things well2% lower than the national average
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Providers shown based on Dr. Kleinberg's location and specialty. Show more Pediatricians.
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