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Dr. Cassandra Heiselman, DO

Dr. Cassandra Heiselman, DO

Obstetrics & Gynecology*

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 11794

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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

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

American Board of Medical Specialties®
American Board of Obstetrics & Gynecology®
Maternal & Fetal Medicine
Obstetrics & Gynecology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

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Locations

Practice

Stony Brook University Hospital101 Nicolls Rd Stony Brook, NY 11794
1

Practice

Island Rehabilitation Chiropractic PC4875 Sunrise Hwy Ste 200 Bohemia, NY 11716
2
  • Call
  • Fax
  • 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
  • Directions

Practice

Office4 Smith Haven Mall Ste 112 Lake Grove, NY 11755
3
University Associates In Obstetrics & Gynecology500 Commack Rd Unit 200 Commack, NY 11725
4

Affiliated Hospitals

  • Stony Brook University Hospital

    101 Nicolls Rd
    Stony Brook, NY 11794
    Recipient of 33
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    74%
    Patients said that doctors always listened to them and explained things well

    2% lower than the national average

    View all patient feedback
  • Stony Brook Southampton Hospital

    240 Meeting House Ln
    Southampton, NY 11968
    Recipient of 24
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards
Learn more about how Healthgrades measures Hospital Quality