William Finn, DPM
NPI 1942203450 · Foot Surgery Podiatrist · Oak Park, IL
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Finn, DPM is a Foot Surgery Podiatrist provider in Oak Park, IL (NPI 1942203450).
Provider details
- NPI number
- 1942203450
- Entity type
- Individual
- Primary specialty
- Foot Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- DPM
- Sex
- Male
- Sole proprietor
- Yes
- License
- 016003835 (IL)
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
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
758 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 227 | $94 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 135 | $59 |
| Trimming of Dystrophic Nails, Any NumberG0127 | 89 | $19 |
| Test Or Measurement for Functional Capacity, Each 15 Minutes97750 | 64 | $30 |
| Removal of Noncancer Thickened Skin Growth, 2-4 Growths11056 | 44 | $84 |
| Removal of Fingernails Or Toenails, 6 Or More Nails11721 | 43 | $46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Ciclopirox | 14 |
| Clotrimazole | 13 |
| Diclofenac Sodium | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$189 across 4 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
Additional practice locations (2)
- 1611 W Harrison St Ste 510Chicago, IL 60612-4861Phone: (847) 250-9096Fax: (847) 390-9345
- 1144 Lake StSte 202Oak Park, IL 60301-1043Phone: (708) 848-8014Fax: (708) 848-8354
Registry dates
- Enumerated
- 2005-05-31
- Last updated
- 2021-12-30
- Certified
- 2021-12-30
Frequently asked questions
- What is William Finn's NPI number?
- William Finn's National Provider Identifier (NPI) is 1942203450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Finn's specialty?
- William Finn is listed in the NPPES registry with a primary specialty of Foot Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is William Finn located?
- William Finn's practice location on file with NPPES is 610 S Maple Ave Ste 2550, Oak Park, IL 60304-2807.
- What is William Finn's phone number?
- The practice phone number listed in the NPPES registry for William Finn is (847) 250-9096.
- Does William Finn accept Medicare?
- William Finn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Finn's NPI active?
- Yes — William Finn's NPI (1942203450) is active in the NPPES registry as of the last update on 2021-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.