Quick answers
- Does Kirby P. Clark accept Medicare assignment?
- Yes. Medicare's clinician data says Kirby P. Clark 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 Kirby P. Clark see?
- In 2024, CMS data shows 1,169 Original Medicare patients and 33,593 services for Kirby P. Clark. This counts Original Medicare only and measures volume, not quality.
- What is Kirby P. Clark's NPI number?
- 1407893795. 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 Kirby P. Clark, 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 | 1,169 |
|---|---|
| Services billed to Medicare | 33,593 |
| Different services or procedures | 117 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, gadoterate meglumine, 0.1 ml (A9575)16,497 services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)13,262 services
- Injection, methylprednisolone acetate, 1 mg (J1010)490 services
- Limited ultrasound scan of abdomen (76705)243 services
- Mri scan of leg joint without contrast (73721)187 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 pressure72%
- Arthritis55%
- Ischemic heart disease29%
- Anxiety24%
- Diabetes23%
Practice locations
Addresses where Kirby P. Clark is enrolled with Medicare (CMS data updated October 2, 2026).
- 4006 Johnathan StWaterloo, IA 50701 (319) 236‑2700
Group practices
Medicare enrollment lists Kirby P. Clark as a member of this group (CMS data updated October 2, 2026).
- Cedar Valley Medical Specialists PC43 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Waterloo
Clinicians with the same Medicare primary specialty in Waterloo, IA — not a recommendation.
Other clinicians in Cedar Valley Medical Specialists PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407893795 |
| 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