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Dr. Marsha Mertens, MD

Dr. Marsha Mertens, MD

Family Medicine*
40+ years of experience

Dr. Marsha Mertens, MD is a family medicine physician in Saint Louis, MO and has over 40 years of experience in the medical field. She graduated from UNIVERSITY OF MISSOURI / COLUMBIA CAMPUS in 1982. She is affiliated with medical facilities such as Mercy Hospital Jefferson and Mercy Hospital South. She is accepting telehealth appointments.

3.9 Star Rating
Based on 17 reviews 3.9 Star Rating (17 reviews)

Practice

12680 Olive Blvd Ste 300 Saint Louis, MO 63141
Telehealth available
(314) 251-8888

At a Glance

  • Area of Expertise
    Dr. Mertens specializes in the area of Family Practice. • 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
    Patient Safety Excellence Award™ • See hospitals
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Dr. Mertens' Reviews

Likelihood to recommend Dr. Mertens

3.9
17 ratings, 6 with a written review
5 star
71%
71%
4 star
0%
0%
3 star
6%
6%
2 star
0%
0%
1 star
24%
24%

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Best Family Doctor anywhere!
Dr. Mertens was my doctor for over 20 years in West St. Louis County and I cannot advocate more strongly for her as a wonderful doctor and great listener. She always went above and beyond for me. I detest all things medical and going to her made things so much less anxiety provoking. The only reason I stopped going is she moved farther away for her practice which hopefully has given her more time with family. I wish only the best for her and her staff.
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
Mar 28, 2025
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My family and I have experienced zero patient advocacy with Marsha Mertens and her office. After reaching out to her about ordering a test for my body, that I was paying for out of my pocket, I was given a list of hoops to jump through that boiled down to paying her office more money before the CT scan would be ordered. No procedure. No medication, just a CT scan. When I was forced to respectfully advocate for myself because no one knows my body as well as me, I was met with a nasty tone and complete disregard. I felt like I was dealing with another doctor entrenched in the red tape and money-making schemes of the broken U.S. healthcare system. Keep in mind — just because someone has been doing something for a long time doesn’t mean they have been doing it right. Trust yourself. What she said was impossible, another doctor made possible. Leaving Marsha Mertens’ backwards office was one of the best decisions I have ever made.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Didn't trust the provider's decisions
Helpful
You Deserve Better – Jun 07, 2021
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Dr. Mertens is an amazing doctor! She is extremely dedicated, professional, patient and above all has a great diagnosis! I highly recommend Dr. Mertens to anyone who values care and effective treatment.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Jan 01, 2020
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She does not listen at all to what you tell her about problems that you have had for years. She makes a decision about your health and medications based on a first visit only. She has absolutely zero compassion will not continue to prescribe treatment that previous doctor has you on. She totally turns on you if you won't do things her way
What went well
  • Wait times
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
2 others found this helpful
Helpful
Anonymous in hillsboro Missouri – Aug 26, 2017
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Dr. Mertens is an excellent doctor in every way. We would be better off if all doctors were like her.
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Difficult to schedule appointment
2 others found this helpful
Helpful
Ballwin, MO – Apr 20, 2016
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Dr. Mertens is very patient and understanding in taking care of my adult son's special needs. We feel very comfortable in her care.
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
St Louis, MO – Mar 10, 2016
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Know Before You Go

About Me

biography

Dr. Marsha Mertens, MD is a family medicine physician in Saint Louis, MO and has over 40 years of experience in the medical field. She graduated from UNIVERSITY OF MISSOURI / COLUMBIA CAMPUS in 1982. She is affiliated with medical facilities such...read more

  • Family Medicine

*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 Missouri / Columbia Campus

    Medical School, 1982
American Board of Medical Specialties®
American Board of Family Medicine®
- 
Family Practice
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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Focus on Diabetes

Locations

Practice

Mercy Clinic Family Medicine Olive Mason12680 Olive Blvd Ste 300 Saint Louis, MO 63141
1

Practice

Mercy Primary Care-Hillsboro5194 Jeremiah Blvd Hillsboro, MO 63050
2

Affiliated Hospitals

  • Mercy Hospital St. Louis

    615 S New Ballas Rd
    Saint Louis, MO 63141
    Recipient of 21
    hospital awards

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

    82%
    Patients said they were given information about recovering at home

    2% lower than the national average

    76%
    Patients said that nurses always listened to them and explained things well

    1% higher than the national average

    View all patient feedback

  • Mercy Hospital Jefferson

    1400 US Highway 61
    Festus, MO 63028
    Recipient of 3
    hospital awards

    Patient Safety Excellence Award™ (2025, 2024, 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.

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

    2% higher than the national average

    78%
    Patients said that nurses always listened to them and explained things well

    3% higher than the national average

    View all patient feedback

  • Washington County Memorial Hospital

    300 Health Way Dr
    Potosi, MO 63664

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

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

    2% lower than the national average

    79%
    Patients said that nurses always listened to them and explained things well

    3% lower than the national average

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