NPPES file of Aug 9, 2026

Stephen J. Frommelt, PH.D.

Psychologist · Dubuque, IA

Stephen J. Frommelt, PH.D. is a psychologist with a practice address in Dubuque, Iowa, and NPI 1083665111, issued on May 13, 2006. Check the license (Iowa 00423, as entered in NPPES) with the Iowa 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
1083665111
Name
Stephen J. Frommelt
Credential
PH.D.
Primary taxonomy
Psychologist 103T00000X
License number
00423 IA
Self-reported in NPPES; status is on the state search
Practice location
1000 Langworthy St, Dubuque, IA 52001
Phone
(563) 584-3500
Enumerated
May 13, 2006
Record last updated
Nov 30, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(563) 584-3520
Medicare enrollment
Enrolled (PECOS I20100326000418); 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 psychologist records → All 251 in Iowa → Look up another NPI →

Also registered at 1000 Langworthy St

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

  1. Louis Alt, M.D.Otolaryngology Physician1902855778
  2. Courtney Ambrosy, PA-CPhysician Assistant1457121345
  3. Sarah ArnoldMedical Physician Assistant1558016113
  4. Paula Aston, MDNeurology Physician1144286675
  5. Kala Ave-Lallemant, FNPFamily Nurse Practitioner1235551656
  6. Martin Bagby, DOFamily Medicine Physician1942269402

Verify Stephen J. Frommelt in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 00423    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 Iowa 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. Medical Associates Clinic P CDubuque, IA

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

Stephen J. Frommelt among 251 psychologist records in Iowa

Stephen J. Frommelt, PH.D. is one of 251 psychologist records with a practice address in Iowa. 19% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 56% newer
  • In a Medicare fileYes · 19% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated1996 · median 2001 among the 68 with a school on file
  • Record last updated2009 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychologist providers in Iowa

There are 251 psychologist records in Iowa.

All 251 in Iowa → Every provider in Dubuque → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Dana Hamann, PHDDubuque, IA 520011750639936
  2. Nicole Keedy, PHDDubuque, IA 520011669789616
  3. Christine McGrath Wetjen, PH.D.Dubuque, IA 520011770749269
  4. Amy Miller, PHDDubuque, IA 520011831449529
  5. Jerry Odefey, M.S.Dubuque, IA 520011851331524
  6. Daniel Olson, PH.D.Dubuque, IA 520011043216039
  7. Jessica Ihns, PSY.D.Maquoketa, IA 520601063486330
  8. Claire Haedike, PSYDDecorah, IA 521011275843302

Common questions

What is Stephen J. Frommelt, PH.D.'s NPI number?

Stephen J. Frommelt, PH.D.'s National Provider Identifier (NPI) is 1083665111, issued on May 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen J. Frommelt, PH.D. located?

The NPPES record lists a practice address at 1000 Langworthy St, Dubuque, IA, 52001. Phone: (563) 584-3500. Providers update this record themselves, so call before visiting.

How can I verify Stephen J. Frommelt, PH.D.'s license?

NPPES lists Iowa license number 00423, 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.

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.