Quick answers
- Does Jason G. Fennema accept Medicare assignment?
- Yes. Medicare's clinician data says Jason G. Fennema 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 Jason G. Fennema see?
- In 2024, CMS data shows 46 Original Medicare patients and 659 services for Jason G. Fennema. This counts Original Medicare only and measures volume, not quality.
- What is Jason G. Fennema's NPI number?
- 1386657690. 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 Jason G. Fennema, 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 | 46 |
|---|---|
| Services billed to Medicare | 659 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)634 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 cholesterol61%
- High blood pressure52%
- Arthritis52%
- Depression30%
Practice locations
Addresses where Jason G. Fennema is enrolled with Medicare (CMS data updated October 2, 2026).
- 1222 N Eola RdAurora, IL 60502 (630) 499‑8804
- 4256 N Ravenswood AveChicago, IL 60613 (773) 327‑2225
- 4256 N Ravenswood Ave, Suite 101Chicago, IL 60613
Group practices
Medicare enrollment lists Jason G. Fennema as a member of these groups (CMS data updated October 2, 2026).
- Advance Performance Pain and Wellness Center3 clinicians in the group
- Ravenswood Health and Wellness Center S.C.2 clinicians in the group
Specialties
Other chiropractors in Aurora
Clinicians with the same Medicare primary specialty in Aurora, IL — not a recommendation.
Other clinicians in Advance Performance Pain and Wellness Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| School | Logan College Of Chiropractic |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386657690 |
| 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