Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Kay Johnson, LCSW CSW PIP QMNP
Social Worker in Watertown, SD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598848921
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Registry record
Entity type Individual (Type 1)
Name Mary Kay Johnson
Credential LCSW CSW PIP QMNP
Sex Female
Practice address 1103 Jenson Ave Se, Watertown, SD, 57201
Phone (605) 878-1234
Fax (605) 878-2211
Enumeration date Oct 21, 2006
Last updated in NPPES May 6, 2022
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LCSW 1557 (SD) Secondary
104100000X Social Worker Behavioral Health & Social Service Providers · License CSW PIP 1991 (SD) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 6571100 | Medicaid | SD | - |
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
Where does Mary Johnson practice?
The practice location on file with NPPES is in Watertown, SD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Johnson?
The National Provider Identifier (NPI) for Mary Johnson is 1598848921, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-06.