Dr. William Samuel Ashwander, MD
- Medicare services, 2024
- 1,932
- Medicare patients, 2024
- 1,262
- Part D claims, 2024
- 194
- Hospital affiliations
- 6
- Industry payments
- $6,112
- 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. Ashwander's professional email, personal email and mobile number
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Dr. William Samuel Ashwander is a vascular surgeon in Charleston, South Carolina
Dr. Ashwander practices at Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health.
Dr. Ashwander's NPI, 1649414970, was assigned on April 30, 2009. Dr. Ashwander graduated from University of Alabama School of Medicine in 2009. Dr. Ashwander holds South Carolina license 39815.
- NPI
- 1649414970NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870739527
- NPI enumeration date
- April 30, 2009
- 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
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Samuel Ashwander practices at Roper Hospital in Charleston, South Carolina
Dr. Ashwander'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 Samuel Ashwander is affiliated with 11 sites of care and 3 medical groups
Dr. Ashwander's primary practice is Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health. Dr. Ashwander is also affiliated with MUSC Health University Medical Center. The medical group on file is Roper St. Francis Physician Partners General Surgery. Dmand AI also links Dr. Ashwander to 4 more hospitals, 3 group practices and clinics, 2 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 Samuel Ashwander's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ashwander practices, 11 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 |
| +10 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. William Samuel Ashwander is one of 84 vascular surgeons in South Carolina
Vascular surgery is Dr. Ashwander's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Ashwander is licensed in South Carolina.
Specialties and state licenses
- Vascular surgery, South CarolinaPrimary
Vascular surgeons near Dr. Ashwander
Counts of vascular 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 Samuel Ashwander billed Medicare for 1,932 services in 2024
CMS data shows 1,932 Medicare services from Dr. Ashwander across 24 procedure codes in 2024, for 1,262 Medicare patients. Medicare paid $139,460 for them.
Dr. Ashwander's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5912024: 95862%
- Office and hospital visits
- 2023: 7662024: 7167%
- Surgery
- 2023: 1222024: 9125%
- Other services
- 2023: 02024: 84
- Imaging
- 2023: 772024: 838%
Where Dr. Ashwander's Medicare services took place, 2024
- In an office1,21563%
- In a facility71737%
Dr. Ashwander compared with the South Carolina median for vascular surgeons, 2024
- Dr. Ashwander
- South Carolina median
- Medicare services
- 1,932vs 1,05583% above
- Medicare patients
- 1,262vs 4842.6 times
- Part D claims
- 154vs 9956% above
Medians across 82 vascular surgeons in South Carolina with Dmand AI profiles that report each measure.
Dr. Ashwander'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. Ashwander?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ashwander and other vascular surgeons in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Samuel Ashwander treated 1,262 Medicare patients in 2024, average age 76
CMS counts 1,262 Medicare patients who saw Dr. Ashwander in 2024. The largest group is 75 to 84, with 516 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.69, 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. Ashwander's median patient age at 72, with 53% women.
Dr. Ashwander's Medicare patients by age, 2024
Dr. Ashwander's Medicare patients by sex, 2024
- Women66853%
- Men59447%
Chronic conditions among Dr. Ashwander's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes43%
- Ischemic heart disease40%
- Chronic kidney disease36%
- Heart failure28%
- Anxiety27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ashwander's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Samuel Ashwander wrote 194 Medicare Part D claims in 2024
In 2024, Dr. Ashwander wrote 194 Medicare Part D claims for 78 patients. 88% of them were for generic drugs. CMS names the drug for 154 of them, across 6 drugs with 11 or more claims each, at $17,902 in total drug cost. In 2023, CMS named 176 claims across 6 drugs.
Dr. Ashwander's Part D claims by kind of drug, 2024
- Generic170 claims88%
- Brand-name24 claims12%
Dr. Ashwander'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. Ashwander's Part D claims, 2024
- Opioids22%43 of 194 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: 1762024: 15413%
Drugs named by CMS: 6 in 2024, 6 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
Dr. William Samuel Ashwander ranks in the 70th percentile for leg revascularization (restoring blood flow) in Medicare
Dr. Ashwander accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 14 procedures of leg revascularization (restoring blood flow) by Dr. Ashwander, more than 70% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Ashwander ranks in Medicare procedure volume
- Leg revascularization (restoring blood flow)
- 70th percentile14 procedures
- Varicose vein removal
- 48th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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 Samuel Ashwander received $6,112 in industry payments from 2016 to 2025
CMS Open Payments shows 108 general payments to Dr. Ashwander from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 78% of the total. W. L. Gore & Associates, Inc. paid the most, $2,145.
General payments to Dr. Ashwander by program year, 2016 to 2025
General payments to Dr. Ashwander by kind, 2016 to 2025
- Food and beverage$4,77078%
- Travel and lodging$85014%
- Education$4918%
Companies that paid Dr. Ashwander 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 Samuel Ashwander graduated from University of Alabama School of Medicine
Dr. Ashwander graduated from University of Alabama School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Samuel Ashwander'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)Doctors and Clinicians Utilization Data (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 Samuel Ashwander
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 Samuel Ashwander's NPI number?
Dr. William Samuel Ashwander's NPI number is 1649414970. It was assigned on April 30, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. William Samuel Ashwander?
Dr. William Samuel Ashwander is a vascular surgeon in Charleston, South Carolina. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. William Samuel Ashwander practice?
Dr. Ashwander practices at 316 Calhoun St, Charleston, SC 29401. Dr. Ashwander's primary practice is Roper Hospital in Charleston, South Carolina, part of Bon Secours Mercy Health. Dmand AI also links Dr. Ashwander to 4 hospitals, 3 group practices and clinics, 2 medical groups, 1 clinical lab and 1 home health agency.
What is Dr. William Samuel Ashwander's office phone number?
The practice phone on file for Dr. Ashwander is (843) 724-2800.
What is Dr. William Samuel Ashwander's medical license number?
Dr. Ashwander holds South Carolina license 39815.
Which hospitals is Dr. William Samuel Ashwander affiliated with?
Dr. Ashwander practices at Roper Hospital in Charleston, South Carolina. Dr. Ashwander is also affiliated with MUSC Health University Medical Center. Dmand AI links Dr. Ashwander to 4 more hospitals.
What medical group is Dr. William Samuel Ashwander part of?
Dr. Ashwander is linked to Roper St. Francis Physician Partners General Surgery. Dmand AI links Dr. Ashwander to 2 more medical groups.
Does Dr. William Samuel Ashwander accept Medicare?
Yes. CMS data shows Dr. Ashwander billed Medicare for 1,932 services in 2024, and Dr. Ashwander accepts Medicare assignment.
How many Medicare patients does Dr. William Samuel Ashwander see?
CMS counts 1,262 Medicare patients who saw Dr. Ashwander in 2024, with an average age of 76.
What services does Dr. William Samuel Ashwander bill to Medicare?
In 2024, Dr. Ashwander's most billed Medicare services were office visit, established patient (99213), blood vessel study (93971) and blood vessel study (93880).
Show 4 more questionsShow fewer questions
Where did Dr. William Samuel Ashwander go to medical school?
Dr. Ashwander graduated from University of Alabama School of Medicine in 2009.
What drugs does Dr. William Samuel Ashwander prescribe most?
In 2024 Medicare Part D data, Dr. Ashwander's most prescribed drugs by claims were Clopidogrel, Eliquis and Tramadol HCl.
Has Dr. William Samuel Ashwander received payments from drug or device companies?
CMS Open Payments shows $6,112 in general payments to Dr. Ashwander from 23 companies from 2016 to 2025. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. William Samuel Ashwander been practicing?
Dr. Ashwander graduated from medical school in 2009, 17 years ago.
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