Dr. Gregory Wayne Smith, MD
- Medicare services, 2024
- 3,457
- Medicare patients, 2024
- 590
- Part D claims, 2024
- 618
- Hospital affiliations
- 5
- Industry payments
- $4,778
- Practice address
- 121 Park Central Drive, Suite 100, Columbia, SC 29203
- Practice phone
- Call (803) 252-9906
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Columbia Nephrology
Surgery Center - Medicare-Certified · Columbia, South Carolina
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Dr. Gregory Wayne Smith is a nephrologist in Columbia, South Carolina
Dr. Smith practices at Columbia Nephrology in Columbia, South Carolina.
Dr. Smith's NPI, 1457565913, was assigned on May 10, 2007. Dr. Smith graduated from University of South Carolina School of Medicine in 2008. Dr. Smith holds South Carolina license 30652.
- NPI
- 1457565913NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608948963
- NPI enumeration date
- May 10, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (803) 252-9906
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Wayne Smith practices at Columbia Nephrology in Columbia, South Carolina
Dr. Smith's primary practice is Columbia Nephrology, at 121 Park Central Drive, Suite 100, Columbia, SC 29203. The practice phone is (803) 252-9906.
- Columbia Nephrology121 Park Central Drive, Suite 100, Columbia, SC 29203Phone(803) 252-9906
Source: Dmand AI Affiliation Data
Dr. Gregory Wayne Smith is affiliated with 8 sites of care and 1 medical group
Dr. Smith's primary practice is Columbia Nephrology in Columbia, South Carolina. Dr. Smith is also affiliated with Prisma Health Richland Hospital. The medical group on file is Columbia Nephrology. Dmand AI also links Dr. Smith to 4 more hospitals and 2 dialysis centers, each named with a free account. Dr. Smith's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Wayne Smith's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Smith practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Columbia Nephrology | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Wayne Smith is one of 156 nephrologists in South Carolina
Nephrology is Dr. Smith's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Smith is licensed in South Carolina.
Specialties and state licenses
- Nephrology, South CarolinaPrimary
Nephrologists near Dr. Smith
Counts of nephrologists 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. Gregory Wayne Smith billed Medicare for 3,457 services in 2024
CMS data shows 3,457 Medicare services from Dr. Smith across 24 procedure codes in 2024, for 590 Medicare patients. Medicare paid $179,190 for them.
Dr. Smith's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,3332024: 1,61921%
- Office and hospital visits
- 2023: 8122024: 1,07633%
- Tests and treatments
- 2023: 2982024: 3249%
- Other services
- 2023: 02024: 287
- Surgery
- 2023: 1072024: 15141%
Where Dr. Smith's Medicare services took place, 2024
- In an office2,94785%
- In a facility51015%
Dr. Smith compared with the South Carolina median for nephrologists, 2024
- Dr. Smith
- South Carolina median
- Medicare services
- 3,457vs 1,6392.1 times
- Medicare patients
- 590vs 41343% above
- Part D claims
- 423vs 72041% below
Medians across 155 nephrologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Smith'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. Smith and other nephrologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Wayne Smith treated 590 Medicare patients in 2024, average age 75
CMS counts 590 Medicare patients who saw Dr. Smith in 2024. The largest group is 75 to 84, with 263 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 11% are also on Medicaid. Their average risk score is 3.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Smith's median patient age at 71, with 52% women.
Dr. Smith's Medicare patients by age, 2024
Dr. Smith's Medicare patients by sex, 2024
- Women30752%
- Men28348%
Chronic conditions among Dr. Smith's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes58%
- Arthritis54%
- Ischemic heart disease52%
- Heart failure47%
- Atrial fibrillation39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Smith's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Wayne Smith wrote 618 Medicare Part D claims in 2024
In 2024, Dr. Smith wrote 618 Medicare Part D claims for 165 patients. 82% of them were for generic drugs. CMS names the drug for 423 of them, across 16 drugs with 11 or more claims each, at $154,391 in total drug cost. In 2023, CMS named 405 claims across 15 drugs.
Dr. Smith's Part D claims by kind of drug, 2024
- Generic507 claims82%
- Brand-name and other111 claims18%
Dr. Smith'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4052024: 4234%
Drugs named by CMS: 16 in 2024, 15 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. Gregory Wayne Smith takes part in Medicare
Dr. Smith 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. Gregory Wayne Smith received $4,778 in industry payments from 2016 to 2025
CMS Open Payments shows 234 general payments to Dr. Smith from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $691.
General payments to Dr. Smith by program year, 2016 to 2025
General payments to Dr. Smith by kind, 2016 to 2025
- Food and beverage$4,61197%
- Education$1413%
- Gifts$261%
Companies that paid Dr. Smith the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Wayne Smith graduated from University of South Carolina School of Medicine
Dr. Smith graduated from University of South Carolina School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Wayne Smith'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| Industry payments | Open Payments (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. Gregory Wayne Smith
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. Gregory Wayne Smith's NPI number?
Dr. Gregory Wayne Smith's NPI number is 1457565913. It was assigned on May 10, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Wayne Smith?
Dr. Gregory Wayne Smith is a nephrologist in Columbia, South Carolina. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gregory Wayne Smith practice?
Dr. Smith practices at 121 Park Central Drive, Suite 100, Columbia, SC 29203. Dr. Smith's primary practice is Columbia Nephrology in Columbia, South Carolina. Dmand AI also links Dr. Smith to 4 hospitals and 2 dialysis centers.
What is Dr. Gregory Wayne Smith's office phone number?
The practice phone on file for Dr. Smith is (803) 252-9906.
What is Dr. Gregory Wayne Smith's medical license number?
Dr. Smith holds South Carolina license 30652.
Which hospitals is Dr. Gregory Wayne Smith affiliated with?
Dr. Smith is affiliated with Prisma Health Richland Hospital. Dmand AI links Dr. Smith to 4 more hospitals.
What medical group is Dr. Gregory Wayne Smith part of?
Dr. Smith is linked to Columbia Nephrology.
Does Dr. Gregory Wayne Smith accept Medicare?
Yes. CMS data shows Dr. Smith billed Medicare for 3,457 services in 2024, and Dr. Smith accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Wayne Smith see?
CMS counts 590 Medicare patients who saw Dr. Smith in 2024, with an average age of 75.
What services does Dr. Gregory Wayne Smith bill to Medicare?
In 2024, Dr. Smith's most billed Medicare services were office visit, established patient (99214), lab and pathology test (80069) and lab and pathology test (85025).
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Where did Dr. Gregory Wayne Smith go to medical school?
Dr. Smith graduated from University of South Carolina School of Medicine in 2008.
What drugs does Dr. Gregory Wayne Smith prescribe most?
In 2024 Medicare Part D data, Dr. Smith's most prescribed drugs by claims were Furosemide, Amlodipine Besylate and Sevelamer Carbonate.
Has Dr. Gregory Wayne Smith received payments from drug or device companies?
CMS Open Payments shows $4,778 in general payments to Dr. Smith from 28 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Gregory Wayne Smith been practicing?
Dr. Smith graduated from medical school in 2008, 18 years ago.
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