Quick answers
- Does Isaac T. Tullis accept Medicare assignment?
- Yes. Medicare's clinician data says Isaac T. Tullis 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 Isaac T. Tullis's NPI number?
- 1326903824. 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 Isaac T. Tullis is enrolled with Medicare (CMS data updated October 2, 2026).
- 1409 E Briggsmore AveModesto, CA 95355 (209) 524‑1211
- 1700 Coffee RdModesto, CA 95355 (209) 526‑4500
- 600 Coffee RdModesto, CA 95355 (209) 524‑1211
Group practices
Medicare enrollment lists Isaac T. Tullis as a member of this group (CMS data updated October 2, 2026).
- Sutter Valley Medical Foundation2,500 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Modesto
Clinicians with the same Medicare primary specialty in Modesto, CA — not a recommendation.
Other clinicians in Sutter Valley Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326903824 |
| 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