MATIAS ALBERTO GERSTNER MD
NPI 1053044560
Internal Medicine in Ames, IA
About Matias Alberto Gerstner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATIAS ALBERTO GERSTNER MD (NPI 1053044560) is an individual internal medicine provider in Ames, Iowa, licensed in Iowa (MD-53902) and active in the NPI registry since July 2022. He is enrolled in Medicare PECOS, is affiliated with Mary Greeley Medical Center, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Matias Alberto Gerstner Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Matias Gerstner reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ames, IA 50010
- Reassigned Medicare billing, Iowa enrollment
- 331 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Greeley Medical Center
Acute Care Hospitals · Ames, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 50010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Matias Gerstner's NPI number?
The NPI number for Matias Gerstner is 1053044560. It was assigned to this individual provider in the NPPES registry on July 3, 2022.
Where is Matias Gerstner located?
Matias Gerstner practices at 1215 Duff Ave, Ames, IA 50010. The listed phone number is (515) 239-4431.
What is Matias Gerstner's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Matias Gerstner enrolled in Medicare?
Yes. Matias Gerstner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Matias Gerstner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matias Gerstner reassigns Medicare benefits to Mcfarland Clinic PC (Ames, IA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Matias Gerstner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matias Gerstner accept?
Health plans from Medica and Wellmark Health Plan of Iowa, Inc. list Matias Gerstner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Matias Gerstner affiliated with any hospitals?
According to CMS data, Matias Gerstner is affiliated with Mary Greeley Medical Center.
When was this NPI record last updated?
The NPPES record for Matias Gerstner was last updated on December 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Matias Alberto Gerstner, MD · NPI 1053044560
Internal Medicine physician in Ames, Iowa. Individual provider, active in the CMS NPPES registry since July 3, 2022.
## Identity
- **NPI:** 1053044560 (Entity type: Individual)
- **Enumerated:** July 3, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD-53902 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1215 DUFF AVE, Ames, IA 50010-5469
- **Phone:** (515) 239-4431 · **Fax:** (515) 239-4742
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Mcfarland Clinic PC (NPI 1639135643, Ames, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1053044560) · Data from the CMS NPPES public registry.