# Best Dermatologists in Iowa (October 2026)

Updated October 2026. Source: https://bestdocs.us/iowa/dermatologists/

Dr. Jennifer Palmer ranks first with a score of 79.3: 4.9 stars from 51 Google reviews; 37 years since medical school; accepts Medicare assignment. Dr. John Wollner ranks second with a score of 78.9: 4.8 stars from 75 Google reviews; 48 years since medical school; accepts Medicare assignment. Dr. Kent Walker ranks third with a score of 78.0: 4.9 stars from 35 Google reviews; 37 years since medical school; accepts Medicare assignment.

1. **Jennifer Palmer, MD** — Dermatologist, Pella, IA. Score 79.3. Google 4.9 from 51 reviews; 37 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/jennifer-palmer-dermatologist-pella-1801893862/)
2. **John Wollner, MD** — Dermatologist, Cedar Rapids, IA. Score 78.9. Google 4.8 from 75 reviews; 48 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/john-wollner-dermatologist-cedar-rapids-1568423192/)
3. **Kent Walker, MD** — Dermatologist, Ottumwa, IA. Score 78.0. Google 4.9 from 35 reviews; 37 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/kent-walker-dermatologist-ottumwa-1376519033/)
4. **Ashlynne Clark, MD** — Dermatologist, Cedar Rapids, IA. Score 74.1. Google 5.0 from 486 reviews; 16 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/ashlynne-clark-dermatologist-cedar-rapids-1932410867/)
5. **David Boysen, MD** — Dermatologist, Coralville, IA. Score 74.0. Google 4.7 from 13 reviews; 36 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/david-boysen-dermatologist-coralville-1972687911/)
6. **Thomas Pietras, MD** — Dermatologist, Cedar Rapids, IA. Score 72.9. Google 4.9 from 980 reviews; 17 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/thomas-pietras-dermatologist-cedar-rapids-1306071915/)
7. **David Knutson, MD** — Dermatologist, Cedar Rapids, IA. Score 70.5. Google 4.2 from 19 reviews; 31 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/david-knutson-dermatologist-cedar-rapids-1720025414/)
8. **Matthew Landherr, MD** — Dermatologist, Cedar Rapids, IA. Score 70.2. Google 5.0 from 339 reviews; 13 years since medical school; accepts Medicare assignment; enrolled in Illinois Medicaid. [Profile](https://bestdocs.us/doctor/matthew-landherr-dermatologist-cedar-rapids-1033554498/)
9. **Sarah Gross, MD** — Dermatologist, Marion, IA. Score 69.0. Google 4.9 from 469 reviews; 14 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/sarah-gross-dermatologist-marion-1750648275/)
10. **Paul Fenton, MD** — Dermatologist, Cedar Rapids, IA. Score 64.9. Google 4.9 from 513 reviews; 10 years since medical school; accepts Medicare assignment. [Profile](https://bestdocs.us/doctor/paul-fenton-dermatologist-cedar-rapids-1194176586/)

Ranked by the BestDocs score (https://bestdocs.us/methodology/), weighted toward independent third-party verified patient reviews (60%) over public anonymous reviews (40%). Sponsored placements never change rank.