Diana K. Johnstone, LCSW
Clinical Social Worker · Milwaukee, WI
Diana K. Johnstone, LCSW is a clinical social worker with a practice address in Milwaukee, Wisconsin, and NPI 1740454057, issued on Apr 17, 2008. Check the license (Wisconsin 7326123, as entered in NPPES) with the Wisconsin board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Diana K. Johnstone
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 7326123 WI
Self-reported in NPPES; status is on the state search - Practice location
- 4200 N Holton St, Milwaukee, WI 53212
- Phone
- (414) 988-6980
- Enumerated
- Apr 17, 2008
- Record last updated
- Mar 26, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 43730000 WI
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 4,142 in Wisconsin → Look up another NPI →
Also registered at 4200 N Holton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kayleigh Eisold, MS, LPC-ITMental Health Counselor1265297816
- Joy ParksProfessional Counselor1952614828
- Candyce PhillipsClinical Social Worker1588115919
Verify Diana K. Johnstone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 7326123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Diana K. Johnstone among 4,142 clinical social worker records in Wisconsin
Diana K. Johnstone, LCSW is one of 4,142 clinical social worker records with a practice address in Wisconsin. 22% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 32% of them.
- NPI issued2008 · 32% of these records are older, 63% newer
- In a Medicare fileNo · 22% of these records are
- In the CMS Doctors and Clinicians fileNo · 29% of these records are
- Record last updated2013 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
608 clinical social worker records list a practice address in Milwaukee
They are 608 of the 18,389 NPPES records with a practice address in Milwaukee, and 4,142 clinical social worker records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,142 in Wisconsin → Every provider in Milwaukee → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Mike Bauer, MSWMilwaukee, WI 532121801954102
- Robin Bergeon, LCSWMilwaukee, WI 532121821136540
- Natalie Bui, MSW, LCSWMilwaukee, WI 532121366870255
- Elizabeth Fehler, MSWMilwaukee, WI 532121568666865
- Alexander Hardy, LCSWMilwaukee, WI 532121144594193
- Clorine Harris, LCSWMilwaukee, WI 532121164697132
- Shannon O'Brien, MSW, LCSW, CSAC,CTSMilwaukee, WI 532121366529182
- Ronnie PolkMilwaukee, WI 532121912133794
Common questions
What is Diana K. Johnstone, LCSW's NPI number?
Diana K. Johnstone, LCSW's National Provider Identifier (NPI) is 1740454057, issued on Apr 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Diana K. Johnstone, LCSW located?
The NPPES record lists a practice address at 4200 N Holton St, Milwaukee, WI, 53212. Phone: (414) 988-6980. Providers update this record themselves, so call before visiting.
How can I verify Diana K. Johnstone, LCSW's license?
NPPES lists Wisconsin license number 7326123, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.