Stephen Edward Trefz, LISW
Clinical Social Worker · Iowa City, IA
Stephen Edward Trefz, LISW is a clinical social worker with a practice address in Iowa City, Iowa, and NPI 1326148131, issued on Sep 22, 2006. Check the license (Iowa 00441, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Edward Trefz
- Credential
- LISW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 00441 IA
Self-reported in NPPES; status is on the state search - Practice location
- 507 E College St, Iowa City, IA 52240
- Phone
- (319) 338-7884
- Enumerated
- Sep 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (319) 338-7006
- Medicare enrollment
- Enrolled (PECOS I20101201000083); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 2,170 in Iowa → Look up another NPI →
Also registered at 507 E College St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Anderson, LMSWClinical Social Worker1164821815
- Daniel AquilinaClinical Social Worker1033136890
- Nancy Beyer, MDPsychiatry Physician1831274547
- Gabriel Bodzin, LMSWClinical Social Worker1861826547
- Colette Brodersen, LISWClinical Social Worker1669572913
- Brian BurtonSocial Worker1508022047
Verify Stephen Edward Trefz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 00441Check 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
- Counseling Center For Individual And Family Development LLPIowa City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Edward Trefz among 2,170 clinical social worker records in Iowa
Stephen Edward Trefz, LISW is one of 2,170 clinical social worker records with a practice address in Iowa. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 17% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated1979 · median 2011 among the 528 with a school on file
- Record last updated2007 · 49% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
171 clinical social worker records list a practice address in Iowa City
They are 171 of the 7,163 NPPES records with a practice address in Iowa City, and 2,170 clinical social worker records in Iowa.
All 2,170 in Iowa → Every provider in Iowa City → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Charles AdamsIowa City, IA 522401215937594
- Daniel AquilinaIowa City, IA 522401033136890
- Diane Baumbach, L.I.S.WIowa City, IA 522401548269475
- Mary Blankenburg, LISWIowa City, IA 522401104840347
- Farrah Bonde, LISWIowa City, IA 522401952405987
- Colette Brodersen, LISWIowa City, IA 522401669572913
- Denise Hoke, LISWIowa City, IA 522401982693362
- Amy Kakavas, LISWIowa City, IA 522401346269404
Common questions
What is Stephen Edward Trefz, LISW's NPI number?
Stephen Edward Trefz, LISW's National Provider Identifier (NPI) is 1326148131, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Edward Trefz, LISW located?
The NPPES record lists a practice address at 507 E College St, Iowa City, IA, 52240. Phone: (319) 338-7884. Providers update this record themselves, so call before visiting.
How can I verify Stephen Edward Trefz, LISW's license?
NPPES lists Iowa license number 00441, as entered by the provider. Search the Iowa 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.