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Dr. Marcia Tonnesen, MD

Dr. Marcia Tonnesen, MD

Dermatology*
50+ years of experience

Dr. Marcia Tonnesen, MD is a dermatologist in Stony Brook, NY and has over 50 years of experience in the medical field. She graduated from University of Utah in 1973. She is affiliated with medical facilities such as Stony Brook Southampton Hospital and Stony Brook University Hospital. She is accepting new patients.

Practice

1320 Stony Brook Rd Ste 200 Stony Brook, NY 11790
(631) 444-4200

At a Glance

  • Area of Expertise
    Dr. Tonnesen specializes in the area of Dermatology. • See board certifications
  • Practices at Top Hospital
    America's 100 Best Hospitals Award™ • See hospitals
  • Practices at Highly Recommended Hospital
    Patients recommend this hospital to family and friends. • See hospitals
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Dr. Tonnesen's Reviews

Know Before You Go

About Me

biography

Dr. Marcia Tonnesen, MD is a dermatologist in Stony Brook, NY and has over 50 years of experience in the medical field. She graduated from University of Utah in 1973. She is affiliated with medical facilities such as Stony Brook Southampton Hospital and Stony Brook University Hospital. She is accepting new patients.

  • Dermatology

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

  • University Of Utah

    Medical School, 1973
American Board of Medical Specialties®
American Board of Dermatology®
- 
Dermatology
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.

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

Practice

Stony Brook Dermatology Associates Ufpc1320 Stony Brook Rd Ste 200 Stony Brook, NY 11790
1
  • Call
  • Fax
  • Hours
    • Mon: 8:00am - 4:00pm
    • Tue: 1:00pm - 4:00pm
    • Wed: 8:00am - 4:00pm
    • Thu: 8:45am - 4:00pm
  • Directions

Affiliated Hospitals

  • 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

  • Yale New Haven Hospital

    20 York St
    New Haven, CT 06510
    Recipient of 6
    hospital awards

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

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

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

    85%
    Patients said they were given information about recovering at home

    1% higher than the national average

    76%
    Patients said that doctors always listened to them and explained things well
    View all patient feedback

  • 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 1% in the nation for providing the highest clinical quality year over year

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

    Top 1% in the nation for providing the highest clinical quality year over year

    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
Learn more about how Healthgrades measures Hospital Quality