NPPES file of Aug 9, 2026

Dayton Joel Nelsen, LMSW

Clinical Social Worker · Saint Louis, MO

Dayton Joel Nelsen, LMSW is a clinical social worker with a practice address in Saint Louis, Missouri, and NPI 1417670654, issued on Sep 22, 2022. Check the license (Missouri 2022046260, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1417670654
Name
Dayton Joel Nelsen
Credential
LMSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License numbers
2022046260 MO
2020031628 MO
Self-reported in NPPES; status is on the state search
Practice location
2650 Olive St, Saint Louis, MO 63103
Phone
(314) 802-2647
Enumerated
Sep 22, 2022
Record last updated
Dec 2, 2022
Fax
(314) 842-2552
Medicare enrollment
Enrolled (PECOS I20221208002039); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2650 Olive St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nicole Adams, LMSWClinical Social Worker1922879840
  2. Karlon Bishop, MSWClinical Social Worker1891131678
  3. Kristin Bulin, LCSWClinical Social Worker1093269938
  4. Brittany Casnar, PLPCProfessional Counselor1356917520
  5. Alexander Davis, PMHNPPsychiatric/Mental Health Nurse Practitioner1881289510
  6. Linda Diggs, MSWClinical Social Worker1487090486

Verify Dayton Joel Nelsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 2022046260
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Provident IncSaint Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Dayton Joel Nelsen among 5,398 clinical social worker records in Missouri

Dayton Joel Nelsen, LMSW 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. Its NPI, issued in 2022, is newer than 78% of them.

  • NPI issued2022 · 78% of these records are older, 16% newer
  • In a Medicare fileYes · 11% of these records are
  • In the CMS Doctors and Clinicians fileYes · 18% of these records are
  • Graduated2020 · median 2010 among the 978 with a school on file
  • Record last updated2022 · 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).

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.

The 8 clinical social worker records with the nearest ZIP codes

  1. Dyann Brooks, MSW, LCSWSaint Louis, MO 631031922022268
  2. Tracyne Caumartin, MSW,LCSWSaint Louis, MO 631031285604710
  3. Michele Dvorak, MSW, LCSWSaint Louis, MO 631031407870835
  4. Ricardia Henderson, MSW LCSWSaint Louis, MO 631031962426346
  5. William Johnson, MSWSaint Louis, MO 631031578577649
  6. Gloria Jourdan, MSW, LCSWSaint Louis, MO 631031548284912
  7. Mary Lou Kimmell, MSW, LCSWSaint Louis, MO 631031780698878
  8. Stanley Peters, M.S.W.Saint Louis, MO 631031326052507

Common questions

What is Dayton Joel Nelsen, LMSW's NPI number?

Dayton Joel Nelsen, LMSW's National Provider Identifier (NPI) is 1417670654, issued on Sep 22, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Dayton Joel Nelsen, LMSW located?

The NPPES record lists a practice address at 2650 Olive St, Saint Louis, MO, 63103. Phone: (314) 802-2647. Providers update this record themselves, so call before visiting.

How can I verify Dayton Joel Nelsen, LMSW's license?

NPPES lists Missouri license number 2022046260, 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. Medicare files from data.cms.gov. 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.