NPPES file of Aug 9, 2026

Randall J. Bremner, M.D.

Obstetrics & Gynecology Physician · Decorah, IA

Randall J. Bremner, M.D. is an obstetrics & gynecology physician with a practice address in Decorah, Iowa, and NPI 1003857657, issued on Jun 8, 2006. Check the license (Iowa 26470, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003857657
Name
Randall J. Bremner
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License numbers
26470 IA
61454 WI
Self-reported in NPPES; status is on the state search
Practice location
901 Montgomery St, Decorah, IA 52101
Phone
(563) 382-2911
Enumerated
Jun 8, 2006
Record last updated
May 28, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(563) 387-3102
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 901 Montgomery St

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

  1. Lydia AdamsCertified Registered Nurse Anesthetist1538584131
  2. Sarah Anderson, PT, DPT, SCSPhysical Therapist1518293091
  3. Lisa Barnes, MS, PA-CPhysician Assistant1265540710
  4. Larry Barthel, MDEmergency Medicine Physician1821079906
  5. Jennifer Becker, FNPNurse Practitioner1295380400
  6. Chelsey Bohr, PTPhysical Therapist1336786532

Verify Randall J. Bremner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 26470    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
Open the Iowa license search

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61% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

64 Medicare Part D claims for 31 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Randall Bremner64
  2. Specialty average165

Most prescribed

  1. Estradiol12 claims
  2. Oxybutynin Chloride Er12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Obstetrics & Gynecology Physician providers in Iowa

There are 339 obstetrics & gynecology physician records in Iowa.

All 339 in Iowa → Every provider in Decorah →

Other obstetrics & gynecology physician records in Iowa

  1. Johanna Abernathy, MDCedar Rapids, IA1811991698
  2. Diane Adam, M.D.Coralville, IA1134113061
  3. Maryam Ahmad, MDIowa City, IA1124951033
  4. Angela Aldrich, M.D.Sioux City, IA1679570576
  5. Anisa Alizaidy, MDIowa City, IA1386329266
  6. Olanike Alonge-Obe, MD, MPHWaterloo, IA1174921787
  7. Lindsy Alons, M.DCedar Rapids, IA1205009149
  8. Edward Alt, MDDubuque, IA1548432727
  9. Barrie Anderson, MDIowa City, IA1003803867
  10. Kelly Anderson, D.O.Harlan, IA1790135978

Common questions

What is Randall J. Bremner, M.D.'s NPI number?

Randall J. Bremner, M.D.'s National Provider Identifier (NPI) is 1003857657, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Randall J. Bremner, M.D. located?

The NPPES record lists a practice address at 901 Montgomery St, Decorah, IA, 52101. Phone: (563) 382-2911. Providers update this record themselves, so call before visiting.

How can I verify Randall J. Bremner, M.D.'s license?

NPPES lists Iowa license number 26470, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Randall J. Bremner, M.D. prescribe under Medicare Part D?

In 2024, Randall J. Bremner, M.D. had 64 Medicare Part D claims for 31 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions 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.