Quick answers
- Does Jonah I. Zwemer accept Medicare assignment?
- Yes. Medicare's clinician data says Jonah I. Zwemer 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 Jonah I. Zwemer see?
- In 2024, CMS data shows 1,220 Original Medicare patients and 8,147 services for Jonah I. Zwemer. This counts Original Medicare only and measures volume, not quality.
- What is Jonah I. Zwemer's NPI number?
- 1508999863. 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 Jonah I. Zwemer, 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 | 1,220 |
|---|---|
| Services billed to Medicare | 8,147 |
| Different services or procedures | 122 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)5,432 services
- Injection, gadopiclenol, 1 ml (A9573)460 services
- X-ray of chest, 2 views (71046)178 services
- Dxa bone density measurement of hip, pelvis, spine (77080)81 services
- X-ray of foot, minimum of 3 views (73630)77 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 cholesterol71%
- High blood pressure68%
- Arthritis49%
- Diabetes26%
- Ischemic heart disease25%
- Depression23%
Practice locations
Addresses where Jonah I. Zwemer is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 2005 W Main StBattle Ground, WA 98604 (360) 882‑2778
- 2525 NE 139th StVancouver, WA 98686 (360) 882‑2778
- 2529 NE 139th StVancouver, WA 98686 (360) 882‑2778
- 4500 SE Columbia Palisades DrCamas, WA 98607 (360) 882‑2778
- 501 SE 172nd AveVancouver, WA 98684 (360) 882‑2778
Group practices
Medicare enrollment lists Jonah I. Zwemer as a member of this group (CMS data updated October 2, 2026).
- The Vancouver Clinic Inc PS590 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Other clinicians in The Vancouver Clinic Inc PS
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Florida College Of Medicine |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508999863 |
| 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