
Highlights
Age Groups Seen
- Adults
- Adults 65 and up
Languages
- English
Gender
FemaleAbout Mary Elizabeth Poston
Mary Beth Poston, MD, is an internal medicine physician at Prisma Health in Columbia and an associate professor of clinical internal medicine at the University of South Carolina School of Medicine Columbia. She received her medical degree from the University of South Carolina School of Medicine and completed her residency at Prisma Health Richland Hospital, both in Columbia. She then completed an academic general internal medicine fellowship at the Medical University of South Carolina in Charleston.
Academically, Dr. Poston is interested in graduate medical education and is the Internal Medicine Residency Program Director. Her additional interests include ultrasound in medical education and increasing physical activity in primary care.
Video
Locations
- Prisma Health Internal Medicine – 2 Med Park
- 2 Medical Park Road, Suite 203, Columbia, SC 29203
- Get Directions
- phone: 803-434-8090
- fax: 803-933-3042
Expertise
Education
- Medical School: University of South Carolina School of Medicine
- Residency: Prisma Health Tuomey Healthcare System
Board Certifications
- Internal Medicine: American Board of Internal Medicine
Insurance
- Absolute Total Care - Ambetter
- Absolute Total Care (Centene)
- Aetna
- Aetna Medicare
- Allwell Medicare - Absolute Total Care
- BCBS
- BCBS Blue Essentials
- BCBS PPC
- BCBSSC Blue Reedy Exchange Product (Upstate)
- BCBSSC State Health Plan (PEBA)
- BlueChoice Health Plan
- BlueChoice Medicaid - Healthy Blue
- BlueChoiceMyChoice Advantage
- Carelon Behavioral Health
- Cigna
- Cigna Medicare
- Companion Benefit Alternatives
- CorVel Workers Compensation
- Evernorth Behavioral Health
- FirstHealth (Aetna)
- Healthy Connections
- Humana - Healthy Horizons
- Humana Choice Care
- Humana Medicare
- Liberty Advantage
- Logistics Health
- Magellan
- MedCost
- Medicare (Traditional Fee-for-Service)
- Molina
- Molina Medicaid
- Multiplan/PHCS
- NHC Advantage
- Optum Behavioral Health
- Promise Health Plan
- SC Medicaid Healthy Connections
- Select Health Medicare
- Select Heath (First Choice)
- Spectera
- TriCare
- UnitedHealthcare Medicare Advantage
- Veterans Affairs Community Care Network - VACCN
- Wellcare (Centene)
Ratings & Reviews
5 out of 5
102 ratings, 32 reviewsThe Patient Satisfaction Rating is derived from patient surveys based on the likelihood to recommend this provider’s office.
- 5 out of 5 starsReviewed on 3/28/2026
None. Every aspect of my visit was positive. The questions that I ask of Dr. Mary Poston, or her staff, are always answered with excellent responses. If I need any further support that she is unable to fulfill I'm given the names of other Prisma doctors, their locations, who are experts in their field and can give me continued excellent professional care. My care is always complete and thorough. I'm given choices that allows alternatives that can help.me to meet my health goals by teaching me to be proactive in my health quest: well ahead of pills, and/or surgical intervention. I am seen and treated as a whole person.
- 5 out of 5 starsReviewed on 3/20/2026
I really have nothing negative to say. The visit with Dr. Poston was very good. She has empathy and patience. I appreciate that.
- 5 out of 5 starsReviewed on 3/15/2026
I was very satisfied with my visit. Very comfortable with all personnel I had contact with.
- 5 out of 5 starsReviewed on 2/16/2026
Satisfied
- 5 out of 5 starsReviewed on 2/16/2026
From the time I entered the office, the receptionist, the nurse, and the doctor, and the lady at checkout was very professional, nice, and polite.
- 5 out of 5 starsReviewed on 2/14/2026
I felt that everything that I needed to know was told me. I was listened to and positive responses were given to me right then and there. I have no negative issues with my doctor or her support staff.
- 5 out of 5 starsReviewed on 2/9/2026
No improvements! It was an excellent visit
- 5 out of 5 starsReviewed on 1/11/2026
Nothing! It was perfect
- 5 out of 5 starsReviewed on 1/10/2026
There are no improvements to be made. Dr Poston is the best listener and communicator. I wish I could call out Dr Poston's nurse by name, but she is the best too.
- 5 out of 5 starsReviewed on 1/4/2026
Nothing. The check in process and the Dr was very professional and nice
- 5 out of 5 starsReviewed on 12/21/2025
Everything was great!
- 5 out of 5 starsReviewed on 12/19/2025
I cannot think of anything that needed improvement. Dr. Poston and the Nurses treated me kindly and in a professional manner. I am very happy with the care I received. I am grateful to all.
- 5 out of 5 starsReviewed on 12/19/2025
I truly believe that all bases were covered, concerning my health and welfare. Whenever I have a question Dr. Poston quickly provides the information I need and gives me the means to gather further information if needed.
- 5 out of 5 starsReviewed on 12/8/2025
Thank you.
- 5 out of 5 starsReviewed on 12/7/2025
Great care!
- 5 out of 5 starsReviewed on 11/15/2025
Dr Poston and staff are fantadtic. Always easy to reach and gets back quickly to me. Dr Poston has been my health care provider for probably the 15 years!
- 5 out of 5 starsReviewed on 11/15/2025
Everything was above board. I asked pertinent questions and I was given very good information. Dr. Poston is great as a doctor. She finds and gives me the information that I need. Whether for illnesses or medications she keeps me well informed. She is always thorough and professionally able to address the whole person. This is the opinion that I have of Mary Poston.
- 5 out of 5 starsReviewed on 11/2/2025
Nothing to suggest. The visit exeprience was very good.
- 5 out of 5 starsReviewed on 10/31/2025
No need to change anything. If its not broken don't fix it. A perfect visit.
- 5 out of 5 starsReviewed on 10/18/2025
Everything was fine.
- 5 out of 5 starsReviewed on 10/12/2025
Care was excellent!
- 5 out of 5 starsReviewed on 9/21/2025
My providers were all fantastic. I am very disappointed by the decision of Prisma Health to not make the Covid vaccine available in office.
- 5 out of 5 starsReviewed on 9/20/2025
I am very happy with the care I receive at Internal Medicine and Dr. Poston has my complete confidence.
- 5 out of 5 starsReviewed on 9/14/2025
Nothing. Dr Poston and her staff was very courteous the entire visit.
- 5 out of 5 starsReviewed on 8/10/2025
Everything was great and could not have been improved
- 5 out of 5 starsReviewed on 7/21/2025
Every thing was done with the utmost attention to my care. I was made to understand from a professional standpoint, those things that I asked for, as well as accepting other test and/or procedures that would help me attain excellent health. There was no intimidation or undo influence from my doctor. She offered knowledge and encouragement that allowed me to make decisions that were best for me. Preventive measures that ensured me the best life and a healthy long lived one as well. Thank you for allowing me the space to have my say. Prisma Health has structured a great medical system to meet the needs of all.
- 5 out of 5 starsReviewed on 7/18/2025
I received the best care I can imagine. Dr P had read my chart reporting lots of testing. I wanted her to explain the wealth of info.She helped me prioritize and think through best treatment plan options given the information that we did and not have, to refine an efficient approach. I left with a much better understanding of my situation and a solid treatment plan to answer questions and begin treatment.
- 5 out of 5 starsReviewed on 6/21/2025
I have no suggestions. Dr. Poston is thorough, makes suggestions and explains my options.
- 5 out of 5 starsReviewed on 6/1/2025
I had immediate scheduling of my CT Scan and doctor Poston immediately called with the result. Great Work Prisma Health!
- 5 out of 5 starsReviewed on 5/25/2025
Great care today!
- 5 out of 5 starsReviewed on 5/19/2025
Just continue the way you treat your patients. Thank you so much!
- 5 out of 5 starsReviewed on 5/11/2025
I always get great care with Dr. Poston!