Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Janet Louise Walker, LISW
Social Worker in Grinnell, IA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942405139
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Registry record
Entity type Individual (Type 1)
Name Janet Louise Walker
Credential LISW
Sex Female
Practice address 210 4th Ave, Grinnell, IA, 50112
Phone (641) 236-2347
Fax (641) 236-2586
Enumeration date Jun 18, 2007
Last updated in NPPES Feb 24, 2014
Taxonomy & licenses
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 NPI 1942405139 active?
Yes, as of the latest NPPES snapshot, NPI 1942405139 is active (record last updated 2014-02-24).
How do I verify Janet Walker's NPI record?
Cross-check NPI 1942405139 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Patrick Cogley Family Medicine Physician · Grinnell, IA NPI 1417941717 Roy Doorenbos Family Medicine Physician · Grinnell, IA NPI 1164416467 Guy Mccaw Family Medicine Physician · Grinnell, IA NPI 1588658884 Clayton Francis Family Medicine Physician · Grinnell, IA NPI 1811981012 Michael Rosenfeld Neurology Physician · Grinnell, IA NPI 1194706218 Daniel Anderson Internal Medicine Physician · Grinnell, IA NPI 1104807692 David Cranston Family Medicine Physician · Grinnell, IA NPI 1376526277 Luke Perrin Family Medicine Physician · Grinnell, IA NPI 1407834740
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-24.