Dr. William Gourdin McMaster Jr., MD
- Medicare services, 2024
- 85
- Medicare patients, 2024
- 64
- Part D claims, 2022
- 17
- Publications
- 25
- Hospital affiliations
- 3
- Practice address
- 5 Medical Park, Columbia, SC 29203
- Practice phone
- Call (803) 296-2548
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. McMaster's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William Gourdin McMaster Jr. is a cardiothoracic surgeon in Columbia, South Carolina
Dr. McMaster practices at Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health.
Dr. McMaster's NPI, 1124345574, was assigned on April 26, 2010. Dr. McMaster graduated from Medical University of South Carolina College of Medicine in 2010. Dr. McMaster holds South Carolina license 89449.
- NPI
- 1124345574NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496045387
- NPI enumeration date
- April 26, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (803) 296-2548
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Gourdin McMaster Jr. practices at Prisma Health Richland Hospital in Columbia, South Carolina
Dr. McMaster's primary practice is Prisma Health Richland Hospital, at 5 Medical Park, Columbia, SC 29203 in Richland County. The practice phone is (803) 296-2548.
- Prisma Health Richland Hospital5 Medical Park, Columbia, SC 29203 · Richland CountyPhone(803) 296-2548
Source: Dmand AI Affiliation Data
Dr. William Gourdin McMaster Jr. is affiliated with 4 sites of care and 2 medical groups
Dr. McMaster's primary practice is Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health. Dr. McMaster is also affiliated with Prisma Health Baptist Hospital. The medical group on file is Prisma Health Medical Group-Midlands. Dmand AI also links Dr. McMaster to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Gourdin McMaster Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMaster practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prisma Health Richland Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Prisma Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Gourdin McMaster Jr. is one of 76 cardiothoracic surgeons in South Carolina
Thoracic surgery (cardiothoracic vascular surgery) is Dr. McMaster's primary specialty in the NPI Registry, under taxonomy code 208G00000X. Dmand AI has Dr. McMaster's licenses on file in 2 states: South Carolina and Tennessee.
Specialties and state licenses
- Thoracic surgery (cardiothoracic vascular surgery), South CarolinaPrimary
- Student in an organized health care education/training program, Tennessee
Cardiothoracic surgeons near Dr. McMaster
Counts of cardiothoracic surgeons 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. William Gourdin McMaster Jr. billed Medicare for 85 services in 2024
CMS data shows 85 Medicare services from Dr. McMaster across 5 procedure codes in 2024, for 64 Medicare patients. Medicare paid $23,855 for them.
Dr. McMaster's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 242024: 49104%
- Surgery
- 2023: 342024: 2429%
- Tests and treatments
- 2023: 02024: 12
Where Dr. McMaster's Medicare services took place, 2024
- In an office1720%
- In a facility6880%
Dr. McMaster compared with the South Carolina median for cardiothoracic surgeons, 2024
- Dr. McMaster
- South Carolina median
- Medicare services
- 85vs 23063% below
- Medicare patients
- 64vs 18365% below
- Part D claims
- 17vs 2635% below
Medians across 66 cardiothoracic surgeons in South Carolina with Dmand AI profiles that report each measure.
Dr. McMaster'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.
Need commercial claims for Dr. McMaster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McMaster and other cardiothoracic surgeons in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Gourdin McMaster Jr. treated 64 Medicare patients in 2024, average age 73
CMS counts 64 Medicare patients who saw Dr. McMaster in 2024. The largest group is 65 to 74, with 30 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.68, 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. McMaster's median patient age at 66, with 41% women.
Dr. McMaster's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. McMaster's Medicare patients by sex, 2024
- Women2133%
- Men4367%
Chronic conditions among Dr. McMaster's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure63%
- Atrial fibrillation52%
- Arthritis47%
- Chronic kidney disease45%
- Diabetes44%
Share of Medicare patients with each condition. A patient can have several.
Dr. McMaster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women41%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Gourdin McMaster Jr. wrote 17 Medicare Part D claims in 2022
In 2022, Dr. McMaster wrote 17 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $104 in total drug cost.
Dr. McMaster's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. William Gourdin McMaster Jr. ranks in the 75th percentile for coronary artery bypass graft (cabg) in Medicare
Dr. McMaster accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 24 procedures of coronary artery bypass graft (cabg) by Dr. McMaster, more than 75% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. McMaster ranks in Medicare procedure volume
- Coronary artery bypass graft (CABG)
- 75th percentile24 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. William Gourdin McMaster Jr. has 25 publications on record
Dmand AI links 25 papers to Dr. McMaster, published from 2015 to 2023. 2021 was the busiest year, with 4. The most frequent topics are Cells, Cultured, Hypertension and Mice, Knockout. Dr. McMaster has published most often in Ann Thorac Surg. Dr. McMaster's most frequent co-authors are Kelly Hulett Schlendorf, MD, MHS, David G. Harrison, MD and Jonathan Nathan Menachem, MD.
Dr. McMaster's papers by year, 2015 to 2023
Topics Dr. McMaster writes about most
- Cells, Cultured
- Hypertension
- Mice, Knockout
- Tissue Donors
- Heart Transplantation
- Mice, Inbred C57BL
- Oxidative Stress
- Angiotensin II
Dr. McMaster's most frequent co-authors
- Kelly Hulett Schlendorf, MD, MHS7 shared papers
- David G. Harrison, MD6 shared papers
- Jonathan Nathan Menachem, MD6 shared papers
Recent publications by Dr. McMaster
Ann Thorac Surg
See who Dr. McMaster researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. McMaster works with, so you can find a warm path to the right cardiothoracic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Gourdin McMaster Jr. received $3,417 in industry payments from 2020 to 2025
CMS Open Payments shows 130 general payments to Dr. McMaster from 15 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 95% of the total. Abbott Laboratories paid the most, $1,406. It also lists 5 research payments totaling $184 in 2017.
General payments to Dr. McMaster by program year, 2020 to 2025
General payments to Dr. McMaster by kind, 2020 to 2025
- Food and beverage$3,25195%
- Travel and lodging$1665%
Companies that paid Dr. McMaster the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Gourdin McMaster Jr. graduated from Medical University of South Carolina College of Medicine
Dr. McMaster graduated from Medical University of South Carolina College of Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Gourdin McMaster Jr.'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. William Gourdin McMaster Jr.
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. William Gourdin McMaster Jr.'s NPI number?
Dr. William Gourdin McMaster Jr.'s NPI number is 1124345574. It was assigned on April 26, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. William Gourdin McMaster Jr.?
Dr. William Gourdin McMaster Jr. is a cardiothoracic surgeon in Columbia, South Carolina. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).
Where does Dr. William Gourdin McMaster Jr. practice?
Dr. McMaster practices at 5 Medical Park, Columbia, SC 29203. Dr. McMaster's primary practice is Prisma Health Richland Hospital in Columbia, South Carolina, part of Prisma Health. Dmand AI also links Dr. McMaster to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. William Gourdin McMaster Jr.'s office phone number?
The practice phone on file for Dr. McMaster is (803) 296-2548.
What is Dr. William Gourdin McMaster Jr.'s medical license number?
Dr. McMaster holds South Carolina license 89449, one of the licenses on file in 2 states.
Which states has Dr. William Gourdin McMaster Jr. been licensed in?
Dmand AI has state licenses on file for Dr. McMaster in South Carolina and Tennessee.
Which hospitals is Dr. William Gourdin McMaster Jr. affiliated with?
Dr. McMaster practices at Prisma Health Richland Hospital in Columbia, South Carolina. Dr. McMaster is also affiliated with Prisma Health Baptist Hospital. Dmand AI links Dr. McMaster to 1 more hospital.
What medical group is Dr. William Gourdin McMaster Jr. part of?
Dr. McMaster is linked to Prisma Health Medical Group-Midlands. Dmand AI links Dr. McMaster to 1 more medical group.
Does Dr. William Gourdin McMaster Jr. accept Medicare?
Yes. CMS data shows Dr. McMaster billed Medicare for 85 services in 2024, and Dr. McMaster accepts Medicare assignment.
How many Medicare patients does Dr. William Gourdin McMaster Jr. see?
CMS counts 64 Medicare patients who saw Dr. McMaster in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. William Gourdin McMaster Jr. bill to Medicare?
In 2024, Dr. McMaster's most billed Medicare services were hospital inpatient care (99223), office visit, new patient (99205) and surgery: heart and blood vessels (33508).
Where did Dr. William Gourdin McMaster Jr. go to medical school?
Dr. McMaster graduated from Medical University of South Carolina College of Medicine in 2010.
What drugs does Dr. William Gourdin McMaster Jr. prescribe most?
In 2022 Medicare Part D data, Dr. McMaster's most prescribed drugs by claims were Mupirocin.
Has Dr. William Gourdin McMaster Jr. received payments from drug or device companies?
CMS Open Payments shows $3,417 in general payments to Dr. McMaster from 15 companies from 2020 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. William Gourdin McMaster Jr. been practicing?
Dr. McMaster graduated from medical school in 2010, 16 years ago.
Does Dr. William Gourdin McMaster Jr. do research?
Dmand AI links 25 publications to Dr. McMaster, published from 2015 to 2023.
Who does Dr. William Gourdin McMaster Jr. publish with?
Dr. McMaster's most frequent co-authors are Kelly Hulett Schlendorf, MD, MHS (7 shared papers), David G. Harrison, MD (6 shared papers) and Jonathan Nathan Menachem, MD (6 shared papers).
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