NPPES file of Aug 9, 2026

Michael J. Mahoney, M.D.

Internal Medicine Physician · Clarinda, IA

Michael J. Mahoney, M.D. is an internal medicine physician with a practice address in Clarinda, Iowa, and NPI 1689782336, issued on Aug 25, 2006. Check the license (Iowa 31166, 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
1689782336
Name
Michael J. Mahoney
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
31166 IA
19746 NE
Self-reported in NPPES; status is on the state search
Practice location
220 Essie Davison Dr, Clarinda, IA 51632
Phone
(712) 542-2176
Enumerated
Aug 25, 2006
Record last updated
Aug 19, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(712) 542-8397
Medicare enrollment
Enrolled (PECOS I20041220000544); accepts Medicare assignment
Medical or professional school
University Of Nebraska College Of Medicine, 1993
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 internal medicine physician records → All 871 in Iowa → Look up another NPI →

Also registered at 220 Essie Davison Dr

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

  1. Melisa Baier, RD, LDRegistered Dietitian1043676943
  2. Theophile Barley, M.D.Family Medicine Physician1962643478
  3. Marlene Birkholtz-Wier, D.O.Family Medicine Physician1881663847
  4. Michele Bjorn, ARNPNurse Practitioner1679619795
  5. Katie Burns, ARNPNurse Practitioner1033821269
  6. Kaitlin Card, ARNPFamily Nurse Practitioner1104795475

Verify Michael J. Mahoney in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 31166    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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3.7 times the Medicare Part D claims of the average internal medicine physician in 2024

11,834 Medicare Part D claims for 608 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 264 claims were for opioids.

  1. Michael Mahoney11,834
  2. Specialty average3,176

Most prescribed

  1. Levothyroxine Sodium713 claims
  2. Atorvastatin Calcium480 claims
  3. Pantoprazole Sodium476 claims
  4. Amlodipine Besylate389 claims
  5. Potassium Chloride323 claims
  6. Losartan Potassium271 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.

One hospital affiliation

  1. Clarinda Regional Health CenterClarinda, IA · Critical Access Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Michael J. Mahoney among 871 internal medicine physician records in Iowa

Michael J. Mahoney, M.D. is one of 871 internal medicine physician records with a practice address in Iowa. 70% 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 11% of them.

  • NPI issued2006 · 11% of these records are older, 62% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 44% of these records are
  • Graduated1993 · median 2008 among the 386 with a school on file
  • Record last updated2019 · 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 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in Iowa

There are 871 internal medicine physician records in Iowa.

All 871 in Iowa → Every provider in Clarinda → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Junaid Ebrahim, MDShenandoah, IA 516011275275513
  2. Daniela Donoso Pena, MDRed Oak, IA 515661265744916
  3. Edward Piller, MDRed Oak, IA 515661881750370
  4. Kevin Quinn, MDRed Oak, IA 515661871659367
  5. Sarah Devine, M.D.Harlan, IA 515371639286016
  6. Mohammad RehmanGlenwood, IA 515341730149774
  7. Kevin Crowley, M.D.Council Bluffs, IA 515031043324171
  8. Gary Devoss, M.D.Council Bluffs, IA 515031467566836

Common questions

What is Michael J. Mahoney, M.D.'s NPI number?

Michael J. Mahoney, M.D.'s National Provider Identifier (NPI) is 1689782336, issued on Aug 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael J. Mahoney, M.D. located?

The NPPES record lists a practice address at 220 Essie Davison Dr, Clarinda, IA, 51632. Phone: (712) 542-2176. Providers update this record themselves, so call before visiting.

How can I verify Michael J. Mahoney, M.D.'s license?

NPPES lists Iowa license number 31166, 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 Michael J. Mahoney, M.D. prescribe under Medicare Part D?

In 2024, Michael J. Mahoney, M.D. had 11,834 Medicare Part D claims for 608 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.