Matthew Holzer, DO
Internal Medicine Physician · Des Moines, IA
Matthew Holzer, DO is an internal medicine physician with a practice address in Des Moines, Iowa, and NPI 1184477358, issued on Apr 8, 2024. Check the license (Iowa R-13218, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Matthew Holzer
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R-13218 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 6TH Ave, Des Moines, IA 50314
- Phone
- (515) 643-2261
- Enumerated
- Apr 8, 2024
- Record last updated
- Jun 11, 2024
- Fax
- (515) 643-5802
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 1111 6TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Holzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license R-13218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
18 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $189.97
4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Matthew Holzer among 871 internal medicine physician records in Iowa
Matthew Holzer, DO 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 2024, is newer than 83% of them.
- NPI issued2024 · 83% of these records are older, 12% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 44% of these records are
- Record last updated2024 · 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).
226 internal medicine physician records list a practice address in Des Moines
They are 226 of the 5,538 NPPES records with a practice address in Des Moines, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Des Moines → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Cody Brunclik, DODes Moines, IA 503141013301035
- Kent Carr, MDDes Moines, IA 503141114036340
- Barry Cooper, DODes Moines, IA 503141558744110
- Douglas Hanson, MDDes Moines, IA 503141235124074
- Alan Hilgerson, DODes Moines, IA 503141255326427
- Carol Horner, DODes Moines, IA 503141508979543
- Jason Kruse, DODes Moines, IA 503141851685911
- Kathleen Jade Lim, MDDes Moines, IA 503141194999573
Common questions
What is Matthew Holzer, DO's NPI number?
Matthew Holzer, DO's National Provider Identifier (NPI) is 1184477358, issued on Apr 8, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Holzer, DO located?
The NPPES record lists a practice address at 1111 6TH Ave, Des Moines, IA, 50314. Phone: (515) 643-2261. Providers update this record themselves, so call before visiting.
How can I verify Matthew Holzer, DO's license?
NPPES lists Iowa license number R-13218, 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 Matthew Holzer, DO prescribe under Medicare Part D?
In 2024, Matthew Holzer, DO had 18 Medicare Part D claims; 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.