Gage Williamson, DO
NPI 1548919251 · Student in an Organized Health Care Education/Training Program · Mishawaka, IN
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gage Williamson, DO is a Student in an Organized Health Care Education/Training Program provider in Mishawaka, IN (NPI 1548919251).
Provider details
- NPI number
- 1548919251
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 56 | 18 |
| Gabapentin | 27 | — |
| Losartan Potassium | 24 | — |
| Omeprazole | 21 | — |
| Amlodipine Besylate | 18 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 16 | — |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-03-21
- Last updated
- 2022-03-21
- Certified
- 2022-03-21
Frequently asked questions
- What is Gage Williamson's NPI number?
- Gage Williamson's National Provider Identifier (NPI) is 1548919251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gage Williamson's specialty?
- Gage Williamson is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Gage Williamson located?
- Gage Williamson's practice location on file with NPPES is 611 E Douglas Rd Ste 407, Mishawaka, IN 46545-1468.
- What is Gage Williamson's phone number?
- The practice phone number listed in the NPPES registry for Gage Williamson is (574) 335-6500.
- Does Gage Williamson accept Medicare?
- Gage Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gage Williamson's NPI active?
- Yes — Gage Williamson's NPI (1548919251) is active in the NPPES registry as of the last update on 2022-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.