Quick answers
- Does Michael W. Piepkorn accept Medicare assignment?
- Yes. Medicare's clinician data says Michael W. Piepkorn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Michael W. Piepkorn see?
- In 2024, CMS data shows 3,153 Original Medicare patients and 5,013 services for Michael W. Piepkorn. This counts Original Medicare only and measures volume, not quality.
- What is Michael W. Piepkorn's NPI number?
- 1609975226. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Michael W. Piepkorn, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 3,153 |
|---|---|
| Services billed to Medicare | 5,013 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)4,309 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)239 services
- Special stained specimen slides to examine tissue, initial procedure (88342)139 services
- Surgical pathology consultation and report on referred slides prepared elsewhere (88321)117 services
- Pathology examination of tissue using a microscope, moderately low complexity (88304)115 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol67%
- High blood pressure62%
- Arthritis40%
- Ischemic heart disease21%
- Diabetes17%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)17%
Practice locations
Addresses where Michael W. Piepkorn is enrolled with Medicare (CMS data updated October 2, 2026).
- 2330 130th Ave NE, Suite 201Bellevue, WA 98005 (425) 455‑9945
Group practices
Medicare enrollment lists Michael W. Piepkorn as a member of this group (CMS data updated October 2, 2026).
- Dermatopatholoty Northwest PLLC5 clinicians in the group
Specialties
- Dermatologyprimary
- Pathologyalso
Other dermatologists in Bellevue
Clinicians with the same Medicare primary specialty in Bellevue, WA — not a recommendation.
Other clinicians in Dermatopatholoty Northwest PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 1973 (53 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609975226 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians