Calvin Loken, M.D.
Calvin Loken, M.D. holds NPI 1912932922, with a primary taxonomy of specialist and a practice location in Duluth, MN. The number was issued on July 11, 2006 and the NPPES record was last updated on August 16, 2026.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Specialist Primary | 174400000X | 23268 (MN) |
Practice location
Local context
Active NPPES records list 23 providers with specialist as the primary taxonomy within 25 miles of this practice location's ZIP code.
The same primary taxonomy is listed by 1,016 in Minnesota and 89,616 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Record history
- Name on record
- Dr. Calvin Cardin Loken
- 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/1912932922"