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Dr. Lynn Van Ummersen, MD

Dr. Lynn Van Ummersen, MD

Medical Oncology*

Dr. Lynn Van Ummersen, MD is a medical oncologist in Lake Mary, FL. She is affiliated with medical facilities AdventHealth Fish Memorial and AdventHealth Deland. She is accepting new patients and telehealth appointments.

4.6 Star Rating
Based on 27 reviews 4.6 Star Rating (27 reviews)

Florida Cancer Specialists & Research Institute

805 Currency Cir Lake Mary, FL 32746
Telehealth available

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Hospital Highlight

Dr. Van Ummersen is affiliated with AdventHealth Fish Memorial Orange City, a highly rated hospital.

At a Glance

  • Area of Expertise
    Dr. Van Ummersen specializes in the area of Medical Oncology. See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ See hospitals
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Dr. Van Ummersen's Reviews

Likelihood to recommend Dr. Van Ummersen

4.6
27 ratings, 15 with a written review
5 star
89%
89%
4 star
0%
0%
3 star
4%
4%
2 star
0%
0%
1 star
7%
7%

Your trust is our top concern.

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Dr Van Ummerson is a very good cancer specialist
Dr van ummerson went over my treatments I’ll need and covered very much plus explained them to me I’ve been with her for 8 years now .
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Kimberly – Feb 29, 2024
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Excellent, fully engaged care
I’ve been seeing Dr. Van Ummersen for more than 10 years. She always puts me at ease with casual conversation to begin our visits. She is extremely well versed with the current research regarding my diagnosis, medications and other treatments. She is knowledgeable, compassionate and thorough.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Roxanne Barriero – Feb 08, 2024
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Waiting, waiting, waiting
I waited over 2 hours for the doctor! When she came in she asked how I was & told her I was upset & stressed having to wait so long. This was my 1st visit with her. She told me she uses no nurse practitioners & if I don’t like waiting, I should find another practitioner. She did not examine me. I usually come in once a year & she was scheduling me for 6 months. I honestly questioned how important it is to ever go back.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Appointment wasn't rushed
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
Feb 03, 2024
Dr. Van Ummersen's Reply –
Florida Cancer Specialists
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BE PREPARED TO WAIT
I had a 10:00 appointment. It was 11:15-11:20 before the doctor came into my room. No apology. It wasn’t until I brought up the lateness that any explanation was offered. It would have been better if she had apologized when she first came in and then offered the explanation. The rest of the appointment went ok.
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Staff friendliness
  • Appointment wasn't rushed
What could be improved
  • I didn't feel respected
  • Long wait times
1 other person found this helpful
Helpful
Nov 12, 2023
We are sorry you are disappointed with the wait... Read More
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I was very happy with everything. I was very happy with my appointment. The only problem I had with this appointment was the multitude of paper that I had to fill out. It took the entire wait time in the exam room.
What went well
No results
What could be improved
No results
Helpful
Nov 09, 2023
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I had to wait one hour in a cold room for the doctor after my blood work was taken.
What went well
No results
What could be improved
No results
Helpful
Oct 26, 2023
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Very fine clinical staff and Dr. Van Ummersen takes a great deal of time to listen. Very pleased with the practice. Thank you.
What went well
No results
What could be improved
No results
Helpful
Oct 24, 2023
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I absolutely love love love Dr. Van ummersen. I am very satisfied and will never leave there.
What went well
No results
What could be improved
No results
Helpful
Oct 05, 2023
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I`m very satisfied with Dr. Van Ummersen. However, the wait time was just way too long.
What went well
No results
What could be improved
No results
Helpful
Jul 20, 2023
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Highly recommend
Dr Van Ummersen is THE BEST!! I trust her completely. She is very personable, compassionate and caring. Dr Van Ummersen cares deeply about patient care and is extremely knowledgeable and professional. I feel so fortunate that she is my doctor and has been for over 10 years. Thank you, Dr Lynn!!!!!
What went well
No results
What could be improved
No results
Helpful
May 09, 2023
We're so happy to hear that. We appreciate you... Read More
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Dr. Lynn is great. Easy to talk with and explains things so the patient has no trouble understanding. Happy she is my Doctor.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
May 03, 2023
Thank you so much for your kind words. We... Read More
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They are very people oriented and make you feel like you`re the only person at that moment when they`re dealing with you.
What went well
No results
What could be improved
No results
Helpful
Feb 20, 2023
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Dr. Van Ummerson treated my husband in the past and she has treated me in the past. She is exceptional. I have 50 years of medical background and I would entrust myself and my family`s life to her always.
What went well
No results
What could be improved
No results
Helpful
Feb 06, 2023
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Dr. VanUmmersen is a fantastic doctor. She take times with patients and explains everything so you understand.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Karen Smith in Geneva, FL – Jul 17, 2017
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I have been to alot of doctors for my polocythemia and by far this Dr has been light years above the rest takes time with patients explains what is going on does not treat you like a 15 minute Dr we the people of U.S.A could use a lot more Drs that take the time and effort that this Physician does cant say enough about her and her staff OUTSTANDING DR yes I would highly recommend this Dr and thank you Dr Van Ummerson hope to see y'all soon
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Timothy Berlin in Casselberry Florida – Feb 03, 2016
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Leave a review

How was your experience with Dr. Van Ummersen?

About Me

Watch Dr. Van Ummersen's Video

care philosophy

At Florida Cancer Specialists & Research Institute you will find experienced and compassionate doctors you can trust to treat your unique cancer. Our physicians share a passion for delivering exceptional and personalized care for all forms of cancer...read more

biography

Dr Van Ummersen received her Medical Degree from the University of Massachusetts Medical School, Worcester, MA. She served her medical internship there as well and completed her medical residency at the University of Maryland in Baltimore. She...read more
  • Medical Oncology

*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 Maryland Medical System

    Residency Hospital
  • University Of Massachusetts Chan Medical School

    Internship Hospital
  • University Of Massachusetts Chan Medical School

    Medical School
American Board of Medical Specialties®
American Board of Internal Medicine®
Medical Oncology
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.

Locations

Florida Cancer Specialists & Research Institute

Florida Cancer Specialists & Research Institute - LMC805 Currency Cir Lake Mary, FL 32746
1
Florida Cancer Specialists & Research Institute - OVI2572 W State Road 426 Oviedo, FL 32765
2
Florida Cancer Specialists & Research Institute - ORC2824 Enterprise Rd Orange City, FL 32763
3
Florida Cancer Specialists & Research Institute - DLN810 N Spring Garden Ave Deland, FL 32720
4

Affiliated Hospitals

  • AdventHealth Fish Memorial

    1055 Saxon Blvd
    Orange City, FL 32763
    Recipient of 7
    hospital awards

    America's 250 Best Hospitals Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

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

    84%
    Patients said they were given information about recovering at home
    78%
    Patients said that nurses always listened to them and explained things well

    3% higher than the national average

    View all patient feedback
  • AdventHealth Deland

    701 W Plymouth Ave
    Deland, FL 32720
    Recipient of 1
    hospital award

    Patient Safety Excellence Award™ (2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    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

    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