Dr. Mary Elizabeth Poston, MD
- Medicare services, 2024
- 613
- Medicare patients, 2024
- 198
- Part D claims, 2024
- 1,333
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 1801 Sunset Dr, Columbia, SC 29203
- Practice phone
- Call (803) 545-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prisma Health Medical Group-Midlands
Columbia, South Carolina
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Dr. Mary Elizabeth Poston is an internist in Columbia, South Carolina
Dr. Poston practices at Prisma Health Medical Group-Midlands in Columbia, South Carolina.
Dr. Poston's NPI, 1497722367, was assigned on March 1, 2006. Dr. Poston graduated from Medical University of South Carolina College of Medicine in 1999. Dr. Poston holds South Carolina license 21863.
- NPI
- 1497722367NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830177567
- NPI enumeration date
- March 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (803) 545-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Elizabeth Poston practices at Prisma Health Medical Group-Midlands in Columbia, South Carolina
Dr. Poston's primary practice is Prisma Health Medical Group-Midlands, at 1801 Sunset Dr, Columbia, SC 29203 in Richland County. The practice phone is (803) 545-5000.
- Prisma Health Medical Group-Midlands1801 Sunset Dr, Columbia, SC 29203 · Richland CountyPhone(803) 545-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary Elizabeth Poston is affiliated with 4 sites of care and 1 medical group
Dr. Poston's primary practice is Prisma Health Medical Group-Midlands in Columbia, South Carolina. Dr. Poston is also affiliated with Prisma Health Richland Hospital. The medical group on file is Prisma Health Medical Group-Midlands. Dmand AI also links Dr. Poston to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Elizabeth Poston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Poston practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prisma Health Medical Group-Midlands | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Elizabeth Poston is one of 1,707 internists in South Carolina
Internal medicine is Dr. Poston's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Poston is licensed in South Carolina.
Specialties and state licenses
- Internal medicine, South CarolinaPrimary
Internists near Dr. Poston
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mary Elizabeth Poston billed Medicare for 613 services in 2024
CMS data shows 613 Medicare services from Dr. Poston across 11 procedure codes in 2024, for 198 Medicare patients. Medicare paid $38,166 for them.
Dr. Poston's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2842024: 35224%
- Other services
- 2023: 822024: 15083%
- Surgery
- 2023: 352024: 5969%
- Lab and pathology
- 2023: 272024: 284%
- Tests and treatments
- 2023: 302024: 2420%
Where Dr. Poston's Medicare services took place, 2024
- In an office44973%
- In a facility16427%
Dr. Poston compared with the South Carolina median for internists, 2024
- Dr. Poston
- South Carolina median
- Medicare services
- 613vs 74017% below
- Medicare patients
- 198vs 25823% below
- Part D claims
- 774vs 3312.3 times
Medians across 1,708 internists in South Carolina with Dmand AI profiles that report each measure.
Dr. Poston's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Poston and other internists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Elizabeth Poston treated 198 Medicare patients in 2024, average age 73
CMS counts 198 Medicare patients who saw Dr. Poston in 2024. The largest group is 65 to 74, with 73 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Poston's median patient age at 63, with 67% women.
Dr. Poston's Medicare patients by age, 2024
Dr. Poston's Medicare patients by sex, 2024
- Women12563%
- Men7337%
Chronic conditions among Dr. Poston's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Arthritis46%
- Diabetes38%
- Ischemic heart disease33%
- Chronic kidney disease30%
- Heart failure27%
- Atrial fibrillation24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Poston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Elizabeth Poston wrote 1,333 Medicare Part D claims in 2024
In 2024, Dr. Poston wrote 1,333 Medicare Part D claims for 239 patients. 85% of them were for generic drugs. CMS names the drug for 774 of them, across 35 drugs with 11 or more claims each, at $71,352 in total drug cost. In 2023, CMS named 563 claims across 24 drugs.
Dr. Poston's Part D claims by kind of drug, 2024
- Generic1,137 claims85%
- Brand-name172 claims13%
- Other24 claims2%
Dr. Poston's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Poston's Part D claims, 2024
- Opioids2%33 of 1,333 claims
- Antibiotics1%14 of 1,333 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5632024: 77437%
Drugs named by CMS: 35 in 2024, 24 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mary Elizabeth Poston takes part in Medicare
Dr. Poston accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mary Elizabeth Poston graduated from Medical University of South Carolina College of Medicine
Dr. Poston graduated from Medical University of South Carolina College of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary Elizabeth Poston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Elizabeth Poston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mary Elizabeth Poston's NPI number?
Dr. Mary Elizabeth Poston's NPI number is 1497722367. It was assigned on March 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Elizabeth Poston?
Dr. Mary Elizabeth Poston is an internist in Columbia, South Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Elizabeth Poston practice?
Dr. Poston practices at 1801 Sunset Dr, Columbia, SC 29203. Dr. Poston's primary practice is Prisma Health Medical Group-Midlands in Columbia, South Carolina. Dmand AI also links Dr. Poston to 1 hospital and 1 group practice or clinic.
What is Dr. Mary Elizabeth Poston's office phone number?
The practice phone on file for Dr. Poston is (803) 545-5000.
What is Dr. Mary Elizabeth Poston's medical license number?
Dr. Poston holds South Carolina license 21863.
Which hospitals is Dr. Mary Elizabeth Poston affiliated with?
Dr. Poston is affiliated with Prisma Health Richland Hospital. Dmand AI links Dr. Poston to 1 more hospital.
What medical group is Dr. Mary Elizabeth Poston part of?
Dr. Poston is linked to Prisma Health Medical Group-Midlands.
Does Dr. Mary Elizabeth Poston accept Medicare?
Yes. CMS data shows Dr. Poston billed Medicare for 613 services in 2024, and Dr. Poston accepts Medicare assignment.
How many Medicare patients does Dr. Mary Elizabeth Poston see?
CMS counts 198 Medicare patients who saw Dr. Poston in 2024, with an average age of 73.
What services does Dr. Mary Elizabeth Poston bill to Medicare?
In 2024, Dr. Poston's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and medicare service (G0439).
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Where did Dr. Mary Elizabeth Poston go to medical school?
Dr. Poston graduated from Medical University of South Carolina College of Medicine in 1999.
What drugs does Dr. Mary Elizabeth Poston prescribe most?
In 2024 Medicare Part D data, Dr. Poston's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Metoprolol Succinate.
How long has Dr. Mary Elizabeth Poston been practicing?
Dr. Poston graduated from medical school in 1999, 27 years ago.
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