Joan Cassilly Petersen, LCSW
Clinical Social Worker · St Louis, MO
Joan Cassilly Petersen, LCSW is a clinical social worker with a practice address in St Louis, Missouri, and NPI 1003925876, issued on Aug 29, 2006. Check the license (Missouri 000296, 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
- Joan Cassilly Petersen
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 000296 MO
Self-reported in NPPES; status is on the state search - Practice location
- Personal Potentials, Inc., St Louis, MO 63126
- Phone
- (314) 822-4727
- Enumerated
- Aug 29, 2006
- Record last updated
- Sep 3, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (314) 822-0531
- Medicaid ID
- 493289102 MO
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 5,398 in Missouri → Look up another NPI →
Verify Joan Cassilly Petersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 000296Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Joan Cassilly Petersen among 5,398 clinical social worker records in Missouri
Joan Cassilly Petersen, LCSW is one of 5,398 clinical social worker records with a practice address in Missouri. 11% 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 86% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2008 · 53% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 clinical social worker records list a practice address in St Louis
They are 78 of the 1,420 NPPES records with a practice address in St 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 5,398 in Missouri → Every provider in St Louis → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Saundra Barker, MSW, LCSWSaint Louis, MO 631261730165895
- Renee Gebhart, MSW, LCSWSaint Louis, MO 631261760468789
- Mary Alice LadukeSaint Louis, MO 631261245216217
- Gail Lee, LCSWSaint Louis, MO 631261144395005
- Denise McBain, MSW, LCSWSaint Louis, MO 631261780850495
- Kimberly McGee-Gnuse, MSW, LCSWSaint Louis, MO 631261306001201
- Anita Mehra, MSW, LCSWSaint Louis, MO 631261144371568
- Jan Morris, LCSW, MSWSaint Louis, MO 631261316090756
Common questions
What is Joan Cassilly Petersen, LCSW's NPI number?
Joan Cassilly Petersen, LCSW's National Provider Identifier (NPI) is 1003925876, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joan Cassilly Petersen, LCSW located?
The NPPES record lists a practice address at Personal Potentials, Inc., St Louis, MO, 63126. Phone: (314) 822-4727. Providers update this record themselves, so call before visiting.
How can I verify Joan Cassilly Petersen, LCSW's license?
NPPES lists Missouri license number 000296, 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.