Matthew Holzer, DO
NPI 1184477358 · Internal Medicine Physician · Des Moines, IA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Holzer, DO is a Internal Medicine Physician provider in Des Moines, IA (NPI 1184477358).
Provider details
- NPI number
- 1184477358
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- R-13218 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
2 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$190 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-04-08
- Last updated
- 2024-06-11
- Certified
- 2024-06-11
Frequently asked questions
- What is Matthew Holzer's NPI number?
- Matthew Holzer's National Provider Identifier (NPI) is 1184477358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Holzer's specialty?
- Matthew Holzer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Holzer located?
- Matthew Holzer's practice location on file with NPPES is 1111 6th Ave, Des Moines, IA 50314-2613.
- What is Matthew Holzer's phone number?
- The practice phone number listed in the NPPES registry for Matthew Holzer is (515) 643-2261.
- Does Matthew Holzer accept Medicare?
- Matthew Holzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Holzer's NPI active?
- Yes — Matthew Holzer's NPI (1184477358) is active in the NPPES registry as of the last update on 2024-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.