Mallory Lois Hislar, MSW, LCSW
Clinical Social Worker · Greeley, CO
Mallory Lois Hislar, MSW, LCSW is a clinical social worker with a practice address in Greeley, Colorado, and NPI 1306482666, issued on Nov 21, 2019. Check the license (Colorado CSW.09927998, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mallory Lois Hislar
- Credential
- MSW, LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- CSW.09927998 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1306 11TH Ave, Greeley, CO 80631
- Phone
- (970) 347-2120
- Enumerated
- Nov 21, 2019
- Record last updated
- Feb 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20220428002750); 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 1306 11TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Albert ArriessecqMental Health Counselor1740385517
- Sandra Atwood, LCSWClinical Social Worker1093774994
- Danielle Baker, PEERCommunity Health Worker1992152425
- Jackie Barton, LCSWClinical Social Worker1851881502
Verify Mallory Lois Hislar 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.09927998Check 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
- Sondermind Provider Network LLCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallory Lois Hislar among 7,356 clinical social worker records in Colorado
Mallory Lois Hislar, MSW, 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 2019, is newer than 58% of them.
- NPI issued2019 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2019 · median 2014 among the 1,575 with a school on file
- Record last updated2022 · 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).
101 clinical social worker records list a practice address in Greeley
They are 101 of the 3,518 NPPES records with a practice address in Greeley, and 7,356 clinical social worker records in Colorado.
All 7,356 in Colorado → Every provider in Greeley → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Sandra Atwood, LCSWGreeley, CO 806311093774994
- Margaret Delaney, LCSWGreeley, CO 806311538301965
- Timothy Gartz, LCSWGreeley, CO 806311700891108
- Holly Hedman, L.C.S.W.Greeley, CO 806311710180047
- Andrew Heinz, LCSWGreeley, CO 806311124188057
- Blake Nicholson, LCSWGreeley, CO 806311891769261
- Carole Noblitt, MSW, LCSWGreeley, CO 806311528154200
- Catherine Ocasio, LCSW, LAC, MACGreeley, CO 806311609975101
Common questions
What is Mallory Lois Hislar, MSW, LCSW's NPI number?
Mallory Lois Hislar, MSW, LCSW's National Provider Identifier (NPI) is 1306482666, issued on Nov 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mallory Lois Hislar, MSW, LCSW located?
The NPPES record lists a practice address at 1306 11TH Ave, Greeley, CO, 80631. Phone: (970) 347-2120. Providers update this record themselves, so call before visiting.
How can I verify Mallory Lois Hislar, MSW, LCSW's license?
NPPES lists Colorado license number CSW.09927998, 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.