Quick answers
- Does Madison R. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Madison R. Johnson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Madison R. Johnson see?
- In 2024, CMS data shows 263 Original Medicare patients and 523 services for Madison R. Johnson. This counts Original Medicare only and measures volume, not quality.
- What is Madison R. Johnson's NPI number?
- 1134885551. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Madison R. Johnson, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 263 |
|---|---|
| Services billed to Medicare | 523 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Comprehensive hearing and speech recognition test (92557)262 services
- Test to assess middle ear function (92567)251 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis52%
- Diabetes30%
- Ischemic heart disease30%
- Chronic kidney disease30%
Practice locations
Addresses where Madison R. Johnson is enrolled with Medicare (CMS data updated October 2, 2026).
- 2017 W I 35 Frontage Rd, Mercy ClinicEdmond, OK 73013 (405) 757‑3365
Group practices
Medicare enrollment lists Madison R. Johnson as a member of this group (CMS data updated October 2, 2026).
- Mercy Clinic Oklahoma Communities649 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Edmond
Clinicians with the same Medicare primary specialty in Edmond, OK — not a recommendation.
Other clinicians in Mercy Clinic Oklahoma Communities
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134885551 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians