John Wollner, M.D.
NPI 1568423192 · Dermatology Physician · Cedar Rapids, IA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Wollner, M.D. is a Dermatology Physician provider in Cedar Rapids, IA (NPI 1568423192).
Provider details
- NPI number
- 1568423192
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25852 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other 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
4,761 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,480 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,329 | $83 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 479 | $54 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 311 | $34 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 219 | $52 |
| Biopsy of Related Skin Growth, First Growth11102 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Monohydrate | 157 | 40 |
| Clobetasol Propionate | 118 | 63 |
| Triamcinolone Acetonide | 108 | 60 |
| Mometasone Furoate | 86 | 47 |
| Betamethasone Dipropionate | 83 | 47 |
| Dupilumabbrand: Dupixent Pen | 58 | — |
| Fluocinonide | 55 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$724 across 41 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
- 2006-03-31
- Last updated
- 2022-03-28
- Certified
- 2022-03-28
Frequently asked questions
- What is John Wollner's NPI number?
- John Wollner's National Provider Identifier (NPI) is 1568423192, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Wollner's specialty?
- John Wollner is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Wollner located?
- John Wollner's practice location on file with NPPES is 5264 Council St Ne Ste 700, Cedar Rapids, IA 52402-2477.
- What is John Wollner's phone number?
- The practice phone number listed in the NPPES registry for John Wollner is (319) 363-9936.
- Does John Wollner accept Medicare?
- John Wollner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Wollner's NPI active?
- Yes — John Wollner's NPI (1568423192) is active in the NPPES registry as of the last update on 2022-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.