Quick answers
- Does John R. Sparks accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Sparks 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 John R. Sparks's NPI number?
- 1891342424. 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 John R. Sparks is enrolled with Medicare (CMS data updated October 2, 2026).
- 1260 S Campbell AveGreen Valley, AZ 85614 (520) 407‑5800
- 210 W Continental Rd, Suite 120Green Valley, AZ 85622 (520) 812‑6200
- 210 W Continental Rd, Suite 246aGreen Valley, AZ 85622 (520) 812‑6200
Group practices
Medicare enrollment lists John R. Sparks as a member of this group (CMS data updated October 2, 2026).
- United Community Health Center-Maria Auxiliadora, Inc27 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Green Valley
Clinicians with the same Medicare primary specialty in Green Valley, AZ — not a recommendation.
Other clinicians in United Community Health Center-Maria Auxiliadora, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891342424 |
| 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