William Walker
William Walker is a Case Manager/Care Coordinator provider (Case Manager/Care Coordinator) practicing in Greenfield, WI, registered in the NPPES registry with NPI 1720455702 since 2015. Practices at Solutions for Seniors Two Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1720455702 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William Walker |
| Sex | Male |
| Practice address | 4420 S 108TH ST, Greenfield, WI, 53228 |
| Phone | 4143834486 |
| Fax | 4143834522 |
| Enumeration date | 2015-08-26 |
| Last updated in NPPES | 2015-08-26 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 171M00000X | Case Manager/Care Coordinator | Primary | — | — |
Copy-ready billing details
Provider: William Walker NPI: 1720455702 Taxonomy: 171M00000X (Case Manager/Care Coordinator) Address: 4420 S 108TH ST, Greenfield, WI, 53228
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1033372479 | Solutions for Seniors Two Inc | Organization | Home Health Agency | Greenfield, WI |
| 1366682957 | Heather Sims | Individual | Professional Counselor | Greenfield, WI |
| 1982091625 | Laura Schram | Individual | Case Manager/Care Coordinator | Milwaukee, WI |
| 1225425762 | Laura Cole | Individual | Case Manager/Care Coordinator | Milwaukee, WI |
| 1134516628 | Ali Murphy | Individual | Case Manager/Care Coordinator | Greenfield, WI |
| 1356738884 | Latischa Riley-Coleman | Individual | Case Manager/Care Coordinator | Greenfield, WI |
| 1144617549 | Marina Tylets | Individual | Case Manager/Care Coordinator | Greenfield, WI |
| 1134506298 | Elizabeth Flores-Bustamante | Individual | Case Manager/Care Coordinator | Greenfield, WI |
Verify this record
Cross-check NPI 1720455702 against the authoritative CMS record: view William Walker on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
What is the NPI number for William Walker?
Where does William Walker practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-08-26.