NPPES file of Aug 9, 2026

Katie Fosselius, LCSW, LAC

Clinical Social Worker · Lakewood, CO

Katie Fosselius, LCSW, LAC is a clinical social worker with a practice address in Lakewood, Colorado, and NPI 1811587298, issued on Jan 20, 2021. Check the license (Colorado CSW.09929311, as entered in NPPES) with the Colorado 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
1811587298
Name
Katie Fosselius
Credential
LCSW, LAC
Primary taxonomy
Clinical Social Worker 1041C0700X
License numbers
CSW.09929311 CO
ACD.0002211 CO
Self-reported in NPPES; status is on the state search
Practice location
7114 W Jefferson Ave, Lakewood, CO 80235
Phone
(303) 319-1023
Enumerated
Jan 20, 2021
Record last updated
Aug 8, 2024
Medicare enrollment
Enrolled (PECOS I20240821000303); 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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8 nearest clinical social worker records → All 7,356 in Colorado → Look up another NPI →

Also registered at 7114 W Jefferson Ave

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

  1. Kathleen Bird, LPCProfessional Counselor1295928547
  2. Marguerite Harper, LPCMental Health Counselor1124168752
  3. Robert Kooken, PH.D.Clinical Neuropsychologist1578668489
  4. Gina Mortellaro, L.AC, C.H. DIPL. OMAcupuncturist1275768475
  5. Dean Peterson, MA, LPC, CAC IIIProfessional Counselor1932116522
  6. Laura Rokosz, M.D.Specialist1932161437

Verify Katie Fosselius in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license CSW.09929311    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 Colorado 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. Heart Centered Counseling PCLakewood, CO

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

Katie Fosselius among 7,356 clinical social worker records in Colorado

Katie Fosselius, LCSW, LAC is one of 7,356 clinical social worker records with a practice address in Colorado. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 68% of them.

  • NPI issued2021 · 68% of these records are older, 27% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2001 · median 2014 among the 1,575 with a school on file
  • Record last updated2024 · 46% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

245 clinical social worker records list a practice address in Lakewood

They are 245 of the 4,944 NPPES records with a practice address in Lakewood, and 7,356 clinical social worker records in Colorado.

All 7,356 in Colorado → Every provider in Lakewood → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Robin Baker, LISWLakewood, CO 802351053372391
  2. Tanya Barb, LCSWLakewood, CO 802351164885653
  3. Anne Bukay, LCSWLakewood, CO 802351215304597
  4. Scott ClapsaddleLakewood, CO 802351720547391
  5. Nancy Fischer, LCSWLakewood, CO 802351972963569
  6. Rene GueretteLakewood, CO 802351003017203
  7. Julia Hamlett, LCSWLakewood, CO 802351356991103
  8. Sharon Inglis, LCSWLakewood, CO 802351528258217

Common questions

What is Katie Fosselius, LCSW, LAC's NPI number?

Katie Fosselius, LCSW, LAC's National Provider Identifier (NPI) is 1811587298, issued on Jan 20, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Katie Fosselius, LCSW, LAC located?

The NPPES record lists a practice address at 7114 W Jefferson Ave, Lakewood, CO, 80235. Phone: (303) 319-1023. Providers update this record themselves, so call before visiting.

How can I verify Katie Fosselius, LCSW, LAC's license?

NPPES lists Colorado license number CSW.09929311, as entered by the provider. Search the Colorado 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.