Quick answers
- Does Courtney A. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Courtney A. 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 Courtney A. Johnson see?
- In 2024, CMS data shows 83 Original Medicare patients and 208 services for Courtney A. Johnson. This counts Original Medicare only and measures volume, not quality.
- What is Courtney A. Johnson's NPI number?
- 1902102700. 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 Courtney A. 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 | 83 |
|---|---|
| Services billed to Medicare | 208 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Fluoroscopic guidance for insertion or removal of central vein access device (77001)49 services
- Ultrasonic guidance for blood vessel access (76937)43 services
- Drainage of fluid from abdominal cavity using imaging guidance (49083)33 services
- Insertion of tunneled central venous tube for infusion (5 years or older) (36558)27 services
- Aspiration of fluid from chest cavity using imaging guidance (32555)16 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 blood pressure75%
- High cholesterol75%
- Chronic kidney disease70%
- Diabetes65%
- Heart failure64%
- Ischemic heart disease52%
Practice locations
Addresses where Courtney A. Johnson is enrolled with Medicare (CMS data updated October 2, 2026).
- 16001 W 9 Mile RdSouthfield, MI 48075 (248) 849‑3000
- 47601 Grand River AveNovi, MI 48374 (248) 465‑4100
Group practices
Medicare enrollment lists Courtney A. Johnson as a member of this group (CMS data updated October 2, 2026).
- Southfield Radiology Associates, PLLC38 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Southfield
Clinicians with the same Medicare primary specialty in Southfield, MI — not a recommendation.
Other clinicians in Southfield Radiology Associates, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Yale University School Of Medicine |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902102700 |
| 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