William Knudson, DPM
NPI 1083608814 · Foot & Ankle Surgery Podiatrist · Leesburg, VA
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Knudson, DPM is a Foot & Ankle Surgery Podiatrist provider in Leesburg, VA (NPI 1083608814).
Provider details
- NPI number
- 1083608814
- Entity type
- Individual
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- DPM
- Sex
- Male
- Sole proprietor
- No
- License
- 0103301049 (VA)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,418 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Fingernails Or Toenails, 6 Or More Nails11721 | 1,240 | $43 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,022 | $88 |
| Removal of Noncancer Thickened Skin Growth, 2-4 Growths11056 | 314 | $80 |
| X-Ray of Foot, Minimum of 3 Views73630 | 170 | $33 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 170 | $107 |
| Removal of Noncancer Thickened Skin Growth, 1 Growth11055 | 136 | $69 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 117 | 31 |
| Prednisone | 43 | 36 |
| Cefdinir | 41 | 33 |
| Allopurinol | 40 | 11 |
| Pregabalin | 36 | — |
| Terbinafine Hcl | 34 | 30 |
| Meloxicam | 33 | 13 |
| Duloxetine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$580 across 33 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-08
- Last updated
- 2021-11-01
- Certified
- 2021-11-01
Frequently asked questions
- What is William Knudson's NPI number?
- William Knudson's National Provider Identifier (NPI) is 1083608814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Knudson's specialty?
- William Knudson is listed in the NPPES registry with a primary specialty of Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is William Knudson located?
- William Knudson's practice location on file with NPPES is 224d Cornwall St Nw, Leesburg, VA 20176-2700.
- What is William Knudson's phone number?
- The practice phone number listed in the NPPES registry for William Knudson is (703) 777-5830.
- Does William Knudson accept Medicare?
- William Knudson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Knudson's NPI active?
- Yes — William Knudson's NPI (1083608814) is active in the NPPES registry as of the last update on 2021-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.