AIDAN THURIAN CHARLES MD
NPI 1902397680
Surgery - Surgical Critical Care in Mason City, IA
About Aidan Thurian Charles Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AIDAN THURIAN CHARLES MD (NPI 1902397680) is an individual surgical critical care provider in Mason City, Iowa, licensed in Iowa (MD53742) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and maintains a secondary practice location in Des Moines.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Aidan Thurian Charles 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 Reassignments
2Medicare enrollment records show Aidan Charles reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mason City, IA 50401
- Reassigned Medicare billing, Iowa enrollment
- 420 clinicians in this Medicare group
Ankeny, IA 50023
- Reassigned Medicare billing, Iowa enrollment
- 516 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercyone North Iowa Medical Center
Acute Care Hospitals · Mason City, IAFranklin General Hospital
Critical Access Hospitals · Hampton, IAMitchell County Regional Health
Critical Access Hospitals · Osage, IAKossuth Regional Health Center
Critical Access Hospitals · Algona, IAOther Providers at the Same Location NPPES
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 Aidan Charles's NPI number?
The NPI number for Aidan Charles is 1902397680. It was assigned to this individual provider in the NPPES registry on May 29, 2018.
Where is Aidan Charles located?
Aidan Charles practices at 1000 4th Street SW, Mason City, IA 50401. The listed phone number is (641) 428-7000.
What is Aidan Charles's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Aidan Charles enrolled in Medicare?
Yes. Aidan Charles 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 organizations bill Medicare for Aidan Charles's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aidan Charles reassigns Medicare benefits to 2 organizations: North Iowa Mercy Clinics (Mason City, IA) and Mercy Clinics, Inc (Ankeny, IA). Each 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 Aidan Charles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aidan Charles accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 3 other insurers list Aidan Charles 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 Aidan Charles affiliated with any hospitals?
According to CMS data, Aidan Charles is affiliated with Mercyone North Iowa Medical Center, Franklin General Hospital, Mitchell County Regional Health and Kossuth Regional Health Center.
When was this NPI record last updated?
The NPPES record for Aidan Charles was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Aidan Thurian Charles, MD · NPI 1902397680
Surgical Critical Care physician in Mason City, Iowa. Individual provider, active in the CMS NPPES registry since May 29, 2018.
## Identity
- **NPI:** 1902397680 (Entity type: Individual)
- **Enumerated:** May 29, 2018
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** MD53742 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 4TH STREET SW, Mason City, IA 50401-2800
- **Phone:** (641) 428-7000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): North Iowa Mercy Clinics (NPI 1043321102, Mason City, IA); Mercy Clinics, Inc (NPI 1053721100, Ankeny, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Howard University College Of Medicine, class of 2018
## Record status
- **NPPES last updated:** September 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1902397680) · Data from the CMS NPPES public registry.