David Nelsen, MD
NPI 1417184169 · Dermatology Physician · Janesville, WI
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Nelsen, MD is a Dermatology Physician provider in Janesville, WI (NPI 1417184169).
Provider details
- NPI number
- 1417184169
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 54912-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
4,783 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 1,622 | $36 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 816 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 672 | $65 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 368 | $45 |
| Destruction of Skin Growth, 1-14 Growths17110 | 271 | $68 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 267 | 192 |
| Ketoconazole | 215 | 114 |
| Clobetasol Propionate | 159 | 88 |
| Finasteride | 150 | 38 |
| Mupirocin | 121 | 70 |
| Mometasone Furoate | 109 | 66 |
| Hydrocortisone | 99 | 68 |
| Dupilumabbrand: Dupixent Pen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$176,860 across 266 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
- 2009-06-19
- Last updated
- 2018-09-12
Frequently asked questions
- What is David Nelsen's NPI number?
- David Nelsen's National Provider Identifier (NPI) is 1417184169, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Nelsen's specialty?
- David Nelsen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Nelsen located?
- David Nelsen's practice location on file with NPPES is 3524 E Milwaukee St, Janesville, WI 53546-1626.
- What is David Nelsen's phone number?
- The practice phone number listed in the NPPES registry for David Nelsen is (608) 756-7217.
- Does David Nelsen accept Medicare?
- David Nelsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Nelsen's NPI active?
- Yes — David Nelsen's NPI (1417184169) is active in the NPPES registry as of the last update on 2018-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.