Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Bonnie Kerstein
Registered Nurse in Willmar, MN · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083075923
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Bonnie Kerstein
Sex Female
Practice address 2200 23rd St Ne Ste 1080, Willmar, MN, 56201
Phone (320) 231-7860
Fax (320) 321-7888
Enumeration date Mar 18, 2016
Last updated in NPPES Mar 3, 2025
Taxonomy & licenses
163WC1600X Continuing Education/Staff Development Registered Nurse Nursing Service Providers · License R-200524-9 (MN) Secondary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| R-200524-9 | Other | MN | RN LICENSE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Bonnie Kerstein?
Bonnie Kerstein is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-03.