Donald R. Barzak, MSW
Clinical Social Worker · Saint Louis, MO
Donald R. Barzak, MSW is a clinical social worker with a practice address in Saint Louis, Missouri, and NPI 1598771198, issued on Aug 1, 2006. Check the license (Missouri 001401, as entered in NPPES) with the Missouri board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Donald R. Barzak
- Credential
- MSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 001401 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Jefferson Barracks RD, Saint Louis, MO 63125
- Phone
- (314) 652-4100
- Enumerated
- Aug 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 1 Jefferson Barracks RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregg Bassett, M.D.Psychiatry Physician1235249707
- Jennifer Battles, PH.D.Clinical Psychologist1245974682
- Matthew Becker, DPTPhysical Therapist1538486519
- Justin Bennett, LCSWClinical Social Worker1366949364
- Kailyn Blackmon, PSYDClinical Psychologist1447014774
- Deborah Blackwell, MSN, RN, FNP-CNurse Practitioner1497905590
Verify Donald R. Barzak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 001401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1,474 clinical social worker records list a practice address in Saint Louis
They are 1,474 of the 27,605 NPPES records with a practice address in Saint Louis, and 5,398 clinical social worker records in Missouri. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,474 in Saint Louis → All 5,398 in Missouri → Every provider in Saint Louis →
Other clinical social worker records in Missouri
- Lesly Abanto Medina, LCSWSaint Charles, MO1366898579
- Lisa AbernathySaint Louis, MO1992103691
- Joel Achtenberg, MSW, LCSWWebster Groves, MO1326287772
- William Ackerman, LCSWSaint Louis, MO1952288169
- Edward Acosta, LCSWKansas City, MO1689854515
- Megan AdamoO Fallon, MO1881158707
- Adonica Adams, MSWBridgeton, MO1386650646
- Diana Adams, MS LCSWSaint Joseph, MO1568405165
- Joyce Adams, LCSWKansas City, MO1396877072
- Madeline Adams, LCSWSaint Louis, MO1134527633
Common questions
What is Donald R. Barzak, MSW's NPI number?
Donald R. Barzak, MSW's National Provider Identifier (NPI) is 1598771198, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald R. Barzak, MSW located?
The NPPES record lists a practice address at 1 Jefferson Barracks RD, Saint Louis, MO, 63125. Phone: (314) 652-4100. Providers update this record themselves, so call before visiting.
How can I verify Donald R. Barzak, MSW's license?
NPPES lists Missouri license number 001401, as entered by the provider. Search the Missouri 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.