Mark Klaassen, MD
NPI 1053325589 belongs to Mark Klaassen, MD, an orthopaedic surgery physician with a practice location in Warsaw, IN. The NPI was issued on July 28, 2006, and the record was last updated in NPPES on December 23, 2025.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Orthopaedic Surgery Physician Primary | 207X00000X | 01031923A (IN) |
Practice location
Local context
Active NPPES records list 21 providers with orthopaedic surgery physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 9 of them within 10 miles.
The same primary taxonomy is listed by 778 in Indiana and 36,925 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Nearby providers with the same primary taxonomy
- Kyle Carlson, D.O. , Warsaw, IN, about 3 miles
- Leamon Williams, MD , Warsaw, IN, about 3 miles
Record history
- Name on record
- Mark A Klaassen
- Status
- Active
- NPI issued
- Last updated in NPPES
Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.
NPPES data as of · Source: CMS NPPES
Building software? Fetch this NPI programmatically with the NPILayer Provider API.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://api.npilayer.com/v1/providers/1053325589"