Quick answers
- Does Ronald A. Masukawa accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald A. Masukawa 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.
- What is Ronald A. Masukawa's NPI number?
- 1972558609. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ronald A. Masukawa is enrolled with Medicare (CMS data updated October 2, 2026).
- 405 E Congress Pkwy, Suite CCrystal Lake, IL 60014
- 405 E Congress Pkwy CCrystal Lake, IL 60014
Specialties
- General Practiceprimary
- Chiropracticalso
Other general practitioners in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Chiropractic college | National College Of Chiropractic |
| Graduation year | 1993 (33 years since chiropractic college) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972558609 |
| 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
- 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