Nathan Fierheller
Clinical Social Worker · Littleton, CO
Nathan Fierheller is a clinical social worker with a practice address in Littleton, Colorado, and NPI 1114443215, issued on Aug 21, 2017. Check the license (Colorado CSW.09924904, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathan Fierheller
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- CSW.09924904 CO
Self-reported in NPPES; status is on the state search - Practice location
- 6509 S Santa FE Dr, Littleton, CO 80120
- Phone
- (303) 730-3303
- Enumerated
- Aug 21, 2017
- Record last updated
- Aug 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171009003235); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,356 in Colorado → Look up another NPI →
Also registered at 6509 S Santa FE Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Corinne Aballo, NCC, LPCProfessional Counselor1649915299
- Regina Alegria, LPCProfessional Counselor1144628090
- Ronald Augustine, LPCProfessional Counselor1861616708
- Ann Beetham, N.P.Family Nurse Practitioner1336421296
- Allison Bitterman, LPC, MA, NCCMental Health Counselor1336583095
- Tracy Boh, LCSWClinical Social Worker1093934895
Verify Nathan Fierheller 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.09924904Check 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
- Colorado IN-Home CounselingDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Fierheller among 7,356 clinical social worker records in Colorado
Nathan Fierheller 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 2017, is newer than 48% of them.
- NPI issued2017 · 48% of these records are older, 47% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2014 · median 2014 among the 1,575 with a school on file
- Record last updated2017 · 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).
266 clinical social worker records list a practice address in Littleton
They are 266 of the 3,918 NPPES records with a practice address in Littleton, and 7,356 clinical social worker records in Colorado.
All 7,356 in Colorado → Every provider in Littleton → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Erin Bennetts, LCSWLittleton, CO 801201801806302
- Melissa BortnemLittleton, CO 801201619029170
- Grant Cannizzaro, MSWLittleton, CO 801201871661058
- Sarah Clark, LCSWLittleton, CO 801201164574091
- Sharon Deguevara, LCSWLittleton, CO 801201174674311
- Ann Fleming, LCSWLittleton, CO 801201336207380
- Mark Grebener, LCSW LACLittleton, CO 801201558462481
- Virginia Lee, LCSWLittleton, CO 801201922151307
Common questions
What is Nathan Fierheller's NPI number?
Nathan Fierheller's National Provider Identifier (NPI) is 1114443215, issued on Aug 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Fierheller located?
The NPPES record lists a practice address at 6509 S Santa FE Dr, Littleton, CO, 80120. Phone: (303) 730-3303. Providers update this record themselves, so call before visiting.
How can I verify Nathan Fierheller's license?
NPPES lists Colorado license number CSW.09924904, 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.