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.
- 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
Also registered at 220 Essie Davison Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melisa Baier, RD, LDRegistered Dietitian1043676943
- Theophile Barley, M.D.Family Medicine Physician1962643478
- Marlene Birkholtz-Wier, D.O.Family Medicine Physician1881663847
- Michele Bjorn, ARNPNurse Practitioner1679619795
- Katie Burns, ARNPNurse Practitioner1033821269
- Kaitlin Card, ARNPFamily Nurse Practitioner1104795475
Verify Michael J. Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 31166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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.
Most prescribed
- Levothyroxine Sodium713 claims
- Atorvastatin Calcium480 claims
- Pantoprazole Sodium476 claims
- Amlodipine Besylate389 claims
- Potassium Chloride323 claims
- 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
- 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.
Internal Medicine Physician providers in Iowa
There are 871 internal medicine physician records in Iowa.
Other internal medicine physician records in Iowa
- Baha Abbad, MDWaterloo, IA1366050064
- Shazia Abbas, MDOttumwa, IA1205086998
- Duane Abbott, MDDes Moines, IA1417362666
- Ahmed Abdelhamid, MDIowa City, IA1306403795
- Mohammed Abdila, MDDavenport, IA1982338752
- Sidrah Abid, MDWaterloo, IA1497161830
- Thad Abrams, MDIowa City, IA1326022385
- Samer Abu Alula, M.D.Davenport, IA1447782578
- Hebah Abudawaba, MBBSIowa City, IA1518694405
- Arwa Aburizik, M.B., B.S.Iowa City, IA1356559298
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.
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.