Dr. Matthew Holzer, DO
- Part D claims, 2024
- 18
- Industry payments
- $410
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 1111 6th Ave, Des Moines, IA 50314-2613
- Practice phone
- Call (515) 643-2261
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Holzer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Matthew Holzer is an internist in Des Moines, Iowa
Dr. Holzer practices in Des Moines, Iowa.
Dr. Holzer's NPI, 1184477358, was assigned on April 8, 2024. Dr. Holzer holds Iowa license R-13218.
- NPI
- 1184477358NPI Registry (opens in a new tab)
- NPI enumeration date
- April 8, 2024
- NPI status
- Active
- Practice phone
- (515) 643-2261
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Matthew Holzer's practice address is in Des Moines, Iowa
Dr. Holzer's practice address in the NPI Registry is 1111 6th Ave, Des Moines, IA 50314-2613. The practice phone is (515) 643-2261.
- NPI Registry address1111 6th Ave, Des Moines, IA 50314-2613Phone(515) 643-2261
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Matthew Holzer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holzer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Holzer's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew Holzer is one of 726 internists in Iowa
Internal medicine is Dr. Holzer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Holzer is licensed in Iowa.
Specialties and state licenses
- Internal medicine, IowaPrimary
Internists near Dr. Holzer
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Matthew Holzer's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Holzer's median patient age at 69, with 55% women.
Dr. Holzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Matthew Holzer wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Holzer wrote 18 Medicare Part D claims. 61% of them were for generic drugs.
Dr. Holzer's Part D claims by kind of drug, 2024
- Generic11 claims61%
- Brand-name and other7 claims39%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Matthew Holzer received $410 in industry payments from 2024 to 2025
CMS Open Payments shows 11 general payments to Dr. Holzer from 9 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $140.
General payments to Dr. Holzer by program year, 2024 to 2025
Companies that paid Dr. Holzer the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Matthew Holzer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Matthew Holzer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Matthew Holzer's NPI number?
Dr. Matthew Holzer's NPI number is 1184477358. It was assigned on April 8, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Holzer?
Dr. Matthew Holzer is an internist in Des Moines, Iowa. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Matthew Holzer practice?
Dr. Holzer practices at 1111 6th Ave, Des Moines, IA 50314-2613.
What is Dr. Matthew Holzer's office phone number?
The practice phone on file for Dr. Holzer is (515) 643-2261.
What is Dr. Matthew Holzer's medical license number?
Dr. Holzer holds Iowa license R-13218.
Has Dr. Matthew Holzer received payments from drug or device companies?
CMS Open Payments shows $410 in general payments to Dr. Holzer from 9 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Matthew Holzer been practicing?
Dr. Holzer's NPI was assigned in 2024.
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