Quick answers
- Does Kelli R. Arntzen accept Medicare assignment?
- Medicare's clinician data says Kelli R. Arntzen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Kelli R. Arntzen see?
- In 2024, CMS data shows 798 Original Medicare patients and 4,223 services for Kelli R. Arntzen. This counts Original Medicare only and measures volume, not quality.
- What is Kelli R. Arntzen's NPI number?
- 1477630051. 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 Kelli R. Arntzen, 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 | 798 |
|---|---|
| Services billed to Medicare | 4,223 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)1,779 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)628 services
- Destruction of precancer skin growth, 1 growth (17000)610 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)449 services
- Destruction of skin growth, 1-14 growths (17110)291 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 pressure54%
- Arthritis38%
- Osteoporosis22%
- Ischemic heart disease16%
- Anxiety15%
Practice locations
Addresses where Kelli R. Arntzen is enrolled with Medicare (CMS data updated October 2, 2026).
- 4740 444th Ave SW, Suite 200Seattle, WA 98116
Specialties
- Dermatologyprimary
Other dermatologists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1477630051 |
| 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