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Dr. Mark Sonnenschine, DO

Dr. Mark Sonnenschine, DO

Hematology*
20+ years of experience

Dr. Mark Sonnenschine, DO is a hematologist in Brooklyn, NY and has over 20 years of experience in the medical field. He graduated from New York Institute of Technology College of Osteopathic Medicine in 2003. He is affiliated with medical facilities Maimonides Medical Center and NYC Health + Hospitals/South Brooklyn Health. He is accepting new patients and telehealth appointments.

4.5 Star Rating
Based on 10 reviews 4.5 Star Rating (10 reviews)

Practice

705 Avenue U Brooklyn, NY 11223
Telehealth available

Make an Appointment

At a Glance

  • Areas of Expertise
    Dr. Sonnenschine specializes in the areas of Medical Oncology & 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
    Surgical Care Excellence Award™ See hospitals
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Dr. Sonnenschine's Reviews

Likelihood to recommend Dr. Sonnenschine

4.5
10 ratings, 5 with a written review
5 star
80%
80%
4 star
10%
10%
3 star
0%
0%
2 star
0%
0%
1 star
10%
10%

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My initial consultation with Dr. Mark Sonnenschine appeared professional, but I was immediately concerned by the absence of any displayed credentials, including diplomas or licenses, which are standard in medical offices. Despite his and his receptionist's courteous demeanor, Dr. Sonnenschine drew my blood, promising results within 5-10 days and a follow-up call between 5-8 PM to discuss my treatment plan. However, after three weeks with no contact, I repeatedly called the office, only to be placed on hold and then disconnected numerous times. Calls were consistently directed to voicemail without any follow-up. After four days of this unprofessional conduct, the receptionist finally confirmed that my results had arrived, yet Dr. Sonnenschine still failed to return my calls. The receptionist could not provide a reason for the doctor’s complete lack of communication. This behavior, combined with other patients reporting similar experiences, raises serious concerns about the practice's professionalism and standard of care. **I strongly advise against seeking treatment from this office** due to their gross lack of responsiveness, disregard for patient communication, and questionable transparency regarding credentials.
What went well
  • Appointment scheduling
What could be improved
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
Helpful
Arkady Segal in Brooklyn, NY – Oct 15, 2024
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wow what an unbelievable doctor !!! he treated my family member so special that you would think he was the patients father !! ty
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
Feb 26, 2024
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Trusted doctor
Doctor sonnenschine isn’t just a doctor, he’s someone who makes you feel like family right from the start. He calls you with any questions you had and addresses them all properly. If you want a doctor who will do everything they can in their power for you- doctor Sonnenschine is the right man. Him and his staff are the best ones out there. He knows what he’s doing and is careful and detail oriented. As we all know self care is important and when you use doctor sonnenschine you’re entrusting yourself with the best care out there. You’re giving yourself the best treatment. He explains everything to his patients wether minor or big. He will make time to call you back after an appointment with any given concern. When you put yourself under Dr. sonnenschines care , you know you’re being protected and taken care of. I wish I can give a 10 star rating because that’s what the doc deserves but the choice here is only 5 so just know he deserves more;)
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
Joankesten – Oct 23, 2022
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Amazing doctor!!!! Takes time to explain everything, no matter how minor!! Cares about his patients and families!! Office staff extremely helpful and nice!! Wish all doctors could be like him!!
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
4 others found this helpful
Helpful
Kathy in Staten Island, NY – Apr 22, 2017
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He really cares about his patients.
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
5 others found this helpful
Helpful
bob in Haifa, HA – Dec 06, 2016
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Leave a review

How was your experience with Dr. Sonnenschine?

About Me

biography

Dr. Mark Sonnenschine, DO is a hematologist in Brooklyn, NY and has over 20 years of experience in the medical field. He graduated from New York Institute of Technology College of Osteopathic Medicine in 2003. He is affiliated with medical facilities...read more
  • Hematology

  • Internal Medicine

  • 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.

  • New York Institute Of Technology College Of Osteopathic Medicine

    Medical School, 2003
American Board of Medical Specialties®
American Board of Internal Medicine®
Medical Oncology
American Board of Medical Specialties
Oncology
Self designated 
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.
  • English

  • Hebrew

  • Spanish

Locations

Practice

Progressive Hematology and Oncology PLLC705 Avenue U Brooklyn, NY 11223
1

Practice

Nyc Health Hospitals / South Brooklyn Health2601 Ocean Pkwy Brooklyn, NY 11235
2

Affiliated Hospitals

  • NYC Health + Hospitals/South Brooklyn Health

    2601 Ocean Pkwy
    Brooklyn, NY 11235

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

    75%
    Patients said they were given information about recovering at home

    9% lower than the national average

    72%
    Patients said that doctors always listened to them and explained things well

    4% lower than the national average

    View all patient feedback
  • Maimonides Medical Center

    4802 10th Ave
    Brooklyn, NY 11219
    Recipient of 13
    hospital awards

    Surgical Care Excellence Award™ (2025)

    Superior clinical outcomes in surgical care across 15 of the most common in-hospital surgical procedures including cardiac, vascular, joint replacement, prostate, spine, and gastrointestinal surgeries

    America’s 50 Best Hospitals for Surgical Excellence Award™ (2023)

    Superior clinical outcomes in surgical care across 15 of the most common in-hospital surgical procedures including cardiac, vascular, joint replacement, prostate, spine, and gastrointestinal surgeries

    View all awards

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

    75%
    Patients said they were given information about recovering at home

    9% lower than the national average

    67%
    Patients said that doctors always listened to them and explained things well

    9% lower than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality