GAGE WILLIAMSON DO
NPI 1548919251
Student in an Organized Health Care Education/Training Program in Mishawaka, IN
About Gage Williamson Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GAGE WILLIAMSON DO (NPI 1548919251) is an individual student in an organized health care education/training program in Mishawaka, Indiana and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, is affiliated with Saint Joseph Regional Medical Center, and is a graduate of Marian University College Of Osteopathic Medicine (2019).
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
Gage Williamson Do 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 Gage Williamson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mishawaka, IN 46545
- Reassigned Medicare billing, Indiana enrollment
- 216 clinicians in this Medicare group
Plymouth, IN 46563
- Reassigned Medicare billing, Indiana enrollment
- 73 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Joseph Regional Medical Center
Acute Care Hospitals · Mishawaka, INSaint Joseph Regional Medical Center - Plymouth
Acute Care Hospitals · Plymouth, INOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
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 Gage Williamson's NPI number?
The NPI number for Gage Williamson is 1548919251. It was assigned to this individual provider in the NPPES registry on March 21, 2022.
Where is Gage Williamson located?
Gage Williamson practices at 611 E Douglas Rd Ste 407, Mishawaka, IN 46545. The listed phone number is (574) 335-6500.
What is Gage Williamson's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Gage Williamson enrolled in Medicare?
Yes. Gage Williamson 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 Gage Williamson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gage Williamson reassigns Medicare benefits to 2 organizations: Saint Joseph Regional Medical Center-South Bend Campus, Inc (Mishawaka, IN) and Saint Joseph Regional Medical Center- Plymouth Campus Inc (Plymouth, IN). 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 Gage Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gage Williamson accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list Gage Williamson 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 Gage Williamson affiliated with any hospitals?
According to CMS data, Gage Williamson is affiliated with Saint Joseph Regional Medical Center and Saint Joseph Regional Medical Center - Plymouth.
When was this NPI record last updated?
The NPPES record for Gage Williamson was last updated on March 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Gage Williamson, DO · NPI 1548919251
Student in an Organized Health Care Education/Training Program provider in Mishawaka, Indiana. Individual provider, active in the CMS NPPES registry since March 21, 2022.
## Identity
- **NPI:** 1548919251 (Entity type: Individual)
- **Enumerated:** March 21, 2022
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 611 E DOUGLAS RD STE 407, Mishawaka, IN 46545-1468
- **Phone:** (574) 335-6500
## 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): Saint Joseph Regional Medical Center-South Bend Campus, Inc (NPI 1699132365, Mishawaka, IN); Saint Joseph Regional Medical Center- Plymouth Campus Inc (NPI 1538585187, Plymouth, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Marian University College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** March 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1548919251) · Data from the CMS NPPES public registry.