Caelin Nichelle O'Brien, LCSW
Clinical Social Worker · Castle Rock, CO
Caelin Nichelle O'Brien, LCSW is a clinical social worker with a practice address in Castle Rock, Colorado, and NPI 1497119119, issued on Apr 8, 2016. Check the license (Colorado CSW.09927242, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Caelin Nichelle O'Brien
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- CSW.09927242 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4404 Barranca LN Unit 101, Castle Rock, CO 80104
- Phone
- (720) 733-5270
- Enumerated
- Apr 8, 2016
- Record last updated
- Mar 22, 2023
- Fax
- (720) 733-5271
- Medicare enrollment
- Enrolled (PECOS I20250624000794); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,356 in Colorado → Look up another NPI →
Also registered at 4404 Barranca LN Unit 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kerri Berry, MPTPhysical Therapist1235453077
- Kassidy Bourgeois, PTPhysical Therapist1649683442
- Alicia Heuser, PASurgical Physician Assistant1225036973
- Andrea LawrenceClinical Social Worker1689193799
- Jaimie MurphyFamily Nurse Practitioner1639449549
- Emily Orscheln, PT, DPTOrthopedic Physical Therapist1962989426
Verify Caelin Nichelle O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license CSW.09927242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Poudre Valley Medical Group LLCCastle Rock, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Caelin Nichelle O'Brien among 7,356 clinical social worker records in Colorado
Caelin Nichelle O'Brien, LCSW 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 2016, is newer than 44% of them.
- NPI issued2016 · 44% of these records are older, 52% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2016 · median 2014 among the 1,575 with a school on file
- Record last updated2023 · 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).
44 clinical social worker records list a practice address in Castle Rock
They are 44 of the 1,319 NPPES records with a practice address in Castle Rock, and 7,356 clinical social worker records in Colorado.
All 7,356 in Colorado → Every provider in Castle Rock → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Melanie Bailey, LCSWCastle Rock, CO 801041013946839
- Veronica Conley, LCSWCastle Rock, CO 801041447622204
- Cecilia Emery, LCSWCastle Rock, CO 801041205118346
- Lisa Fabrizio, MSWCastle Rock, CO 801041932541216
- Andrea LawrenceCastle Rock, CO 801041689193799
- Sean Magill, MSW., LCSWCastle Rock, CO 801041700911187
- Joan Palan, LCSW, LMFT, CAC IIICastle Rock, CO 801041750694857
- Kyrzia ParkerCastle Rock, CO 801041073032751
Common questions
What is Caelin Nichelle O'Brien, LCSW's NPI number?
Caelin Nichelle O'Brien, LCSW's National Provider Identifier (NPI) is 1497119119, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Caelin Nichelle O'Brien, LCSW located?
The NPPES record lists a practice address at 4404 Barranca LN Unit 101, Castle Rock, CO, 80104. Phone: (720) 733-5270. Providers update this record themselves, so call before visiting.
How can I verify Caelin Nichelle O'Brien, LCSW's license?
NPPES lists Colorado license number CSW.09927242, 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.
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.