Quick answers
- Does Jill D. Massengill accept Medicare assignment?
- Yes. Medicare's clinician data says Jill D. Massengill 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 Jill D. Massengill see?
- In 2024, CMS data shows 23 Original Medicare patients and 232 services for Jill D. Massengill. This counts Original Medicare only and measures volume, not quality.
- What is Jill D. Massengill's NPI number?
- 1578694717. 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 Jill D. Massengill, 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 | 23 |
|---|---|
| Services billed to Medicare | 232 |
| 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)181 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).
- Arthritis57%
- High cholesterol52%
Practice locations
Addresses where Jill D. Massengill is enrolled with Medicare (CMS data updated October 2, 2026).
- 318 E Park StNorth Bend, WA 98045 (425) 888‑4170
Group practices
Medicare enrollment lists Jill D. Massengill as a member of this group (CMS data updated October 2, 2026).
- Straight Chiropractic Incorporated2 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in North Bend
Clinicians with the same Medicare primary specialty in North Bend, WA — not a recommendation.
Other clinicians in Straight Chiropractic Incorporated
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Chiropractic college | Sherman College Of Straight Chiropractic |
| Graduation year | 1992 (34 years since chiropractic college) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578694717 |
| 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