


Dr. Cassandra Heiselman, DO
Dr. Cassandra Heiselman, DO is an obstetrician gynecologist in Stony Brook, NY. She is affiliated with medical facilities Stony Brook University Hospital and Stony Brook Southampton Hospital.
Practice
101 Nicolls Rd Stony Brook, NY 11794Compare Dr. Cassandra Heiselman, DO with other Obstetrician Gynecologists near you
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Dr. Heiselman's Reviews
Overall Patient Satisfaction
About Me
biography
Dr. Cassandra Heiselman, DO is an obstetrician gynecologist in Stony Brook, NY. She is affiliated with medical facilities Stony Brook University Hospital and Stony Brook Southampton Hospital.Obstetrics & Gynecology
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Locations
Practice
Practice
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- Hours
- Mon: 8:00am - 4:30pm
- Tue: 8:00am - 4:30pm
- Wed: 8:00am - 4:30pm
- Thu: 8:00am - 4:30pm
- Fri: 8:00am - 4:30pm
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Practice
Affiliated Hospitals
- 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
- Recipient of 24
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