Quick answers
- Does Marek A. Stawiski accept Medicare assignment?
- Medicare's clinician data says Marek A. Stawiski may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Marek A. Stawiski see?
- In 2024, CMS data shows 782 Original Medicare patients and 3,398 services for Marek A. Stawiski. This counts Original Medicare only and measures volume, not quality.
- What is Marek A. Stawiski's NPI number?
- 1679573331. 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 Marek A. Stawiski, 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 | 782 |
|---|---|
| Services billed to Medicare | 3,398 |
| Different services or procedures | 61 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)826 services
- Destruction of precancer skin growth, 1 growth (17000)346 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)301 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)296 services
- Biopsy of related skin growth, first growth (11102)201 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 pressure64%
- Arthritis42%
- Anxiety28%
- Diabetes25%
- Depression23%
Practice locations
Addresses where Marek A. Stawiski is enrolled with Medicare (CMS data updated October 2, 2026).
- 833 Michigan St NE, Bldg 102Grand Rapids, MI 49503
Specialties
- Dermatologyprimary
Other dermatologists in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1970 (56 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1679573331 |
| 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