Dr. William G. McDermott, MD
- Medicare services, 2024
- 2,827
- Medicare patients, 2024
- 294
- Part D claims, 2024
- 122
- Hospital affiliations
- 8
- Industry payments
- $2,100
- Practice address
- 316 Calhoun St, Charleston, SC 29401
- Practice phone
- Call (843) 724-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. McDermott'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 G. McDermott is an internist in Charleston, South Carolina
Dr. McDermott practices at Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health.
Dr. McDermott's NPI, 1831485838, was assigned on June 28, 2011. Dr. McDermott graduated from State University of NY Upstate Medical University in 2011. Dr. McDermott holds South Carolina license LL33918.
- NPI
- 1831485838NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103140504
- NPI enumeration date
- June 28, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (843) 724-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William G. McDermott practices at Roper Hospital in Charleston, South Carolina
Dr. McDermott's primary practice is Roper Hospital, at 316 Calhoun St, Charleston, SC 29401 in Charleston County. The practice phone is (843) 724-2800.
- Roper Hospital316 Calhoun St, Charleston, SC 29401 · Charleston CountyPhone(843) 724-2800
Source: Dmand AI Affiliation Data
Dr. William G. McDermott is affiliated with 10 sites of care and 6 medical groups
Dr. McDermott's primary practice is Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health. Dr. McDermott is also affiliated with MUSC Health University Medical Center. The medical group on file is Southeastern Hospitalist Services. Dmand AI also links Dr. McDermott to 6 more hospitals, 5 medical groups, 1 clinical lab and 1 home health agency, 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 G. McDermott's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McDermott practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Roper Hospital | Available with a free account |
| +9 more sites and 5 medical groups | 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 Bon Secours Mercy Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William G. McDermott is one of 1,707 internists in South Carolina
Internal medicine is Dr. McDermott's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. McDermott's licenses on file in 2 states: South Carolina and Tennessee.
Specialties and state licenses
- Internal medicine, South CarolinaPrimary
- Tennessee license
Internists near Dr. McDermott
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. William G. McDermott billed Medicare for 2,827 services in 2024
CMS data shows 2,827 Medicare services from Dr. McDermott across 5 procedure codes in 2024, for 294 Medicare patients. Medicare paid $192,137 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. McDermott's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3842024: 2,827104%
Dr. McDermott compared with the South Carolina median for internists, 2024
- Dr. McDermott
- South Carolina median
- Medicare services
- 2,827vs 7403.8 times
- Medicare patients
- 294vs 25814% above
- Part D claims
- 13vs 33196% below
Medians across 1,708 internists in South Carolina with Dmand AI profiles that report each measure.
Dr. McDermott'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. McDermott?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McDermott and other internists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William G. McDermott treated 294 Medicare patients in 2024, average age 75
CMS counts 294 Medicare patients who saw Dr. McDermott in 2024. The largest group is 75 to 84, with 122 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.87, 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. McDermott's median patient age at 74, with 52% women.
Dr. McDermott's Medicare patients by age, 2024
Dr. McDermott's Medicare patients by sex, 2024
- Women14449%
- Men15051%
Chronic conditions among Dr. McDermott's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Heart failure53%
- Atrial fibrillation52%
- Diabetes51%
- Ischemic heart disease49%
- Chronic kidney disease47%
Share of Medicare patients with each condition. A patient can have several.
Dr. McDermott's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William G. McDermott wrote 122 Medicare Part D claims in 2024
In 2024, Dr. McDermott wrote 122 Medicare Part D claims for 62 patients. 88% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $63 in total drug cost. In 2020, CMS named 26 claims across 2 drugs.
Dr. McDermott's Part D claims by kind of drug, 2024
- Generic107 claims88%
- Brand-name and other15 claims12%
Dr. McDermott'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. McDermott's Part D claims, 2024
- Antibiotics20%25 of 122 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 262024: 1350%
Drugs named by CMS: 1 in 2024, 2 in 2020.
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. William G. McDermott takes part in Medicare
Dr. McDermott 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. William G. McDermott received $2,100 in industry payments from 2016 to 2025
CMS Open Payments shows 56 general payments to Dr. McDermott from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $326.
General payments to Dr. McDermott by program year, 2016 to 2025
Companies that paid Dr. McDermott 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. William G. McDermott graduated from State University of NY Upstate Medical University
Dr. McDermott graduated from State University of NY Upstate Medical University in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William G. McDermott'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. William G. McDermott
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 G. McDermott's NPI number?
Dr. William G. McDermott's NPI number is 1831485838. It was assigned on June 28, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. William G. McDermott?
Dr. William G. McDermott is an internist in Charleston, South Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William G. McDermott practice?
Dr. McDermott practices at 316 Calhoun St, Charleston, SC 29401. Dr. McDermott's primary practice is Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health. Dmand AI also links Dr. McDermott to 6 hospitals, 5 medical groups, 1 clinical lab and 1 home health agency.
What is Dr. William G. McDermott's office phone number?
The practice phone on file for Dr. McDermott is (843) 724-2800.
What is Dr. William G. McDermott's medical license number?
Dr. McDermott holds South Carolina license LL33918, one of the licenses on file in 2 states.
Which states has Dr. William G. McDermott been licensed in?
Dmand AI has state licenses on file for Dr. McDermott in South Carolina and Tennessee.
Which hospitals is Dr. William G. McDermott affiliated with?
Dr. McDermott practices at Roper Hospital in Charleston, South Carolina. Dr. McDermott is also affiliated with MUSC Health University Medical Center. Dmand AI links Dr. McDermott to 6 more hospitals.
What medical group is Dr. William G. McDermott part of?
Dr. McDermott is linked to Southeastern Hospitalist Services. Dmand AI links Dr. McDermott to 5 more medical groups.
Does Dr. William G. McDermott accept Medicare?
Yes. CMS data shows Dr. McDermott billed Medicare for 2,827 services in 2024, and Dr. McDermott accepts Medicare assignment.
How many Medicare patients does Dr. William G. McDermott see?
CMS counts 294 Medicare patients who saw Dr. McDermott in 2024, with an average age of 75.
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What services does Dr. William G. McDermott bill to Medicare?
In 2024, Dr. McDermott's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. William G. McDermott go to medical school?
Dr. McDermott graduated from State University of NY Upstate Medical University in 2011.
What drugs does Dr. William G. McDermott prescribe most?
In 2024 Medicare Part D data, Dr. McDermott's most prescribed drugs by claims were Clopidogrel.
Has Dr. William G. McDermott received payments from drug or device companies?
CMS Open Payments shows $2,100 in general payments to Dr. McDermott from 14 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. William G. McDermott been practicing?
Dr. McDermott graduated from medical school in 2011, 15 years ago.
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