Quick answers
- Does Hayden F. Johnston accept Medicare assignment?
- Yes. Medicare's clinician data says Hayden F. Johnston 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 Hayden F. Johnston's NPI number?
- 1043048846. 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 Hayden F. Johnston is enrolled with Medicare (CMS data updated October 2, 2026).
- 1301 20th St, Suite 280Santa Monica, CA 90404 (310) 829‑6789
- 4725 -4733 Sunset BlvdLos Angeles, CA 90027 (323) 783‑4011
- 4733 W Sunset BlvdLos Angeles, CA 90027 (213) 667‑4784
- 4867 W Sunset BlvdLos Angeles, CA 90027 (323) 783‑4011
Group practices
Medicare enrollment lists Hayden F. Johnston as a member of these groups (CMS data updated October 2, 2026).
- Southern California Permanente Medical Group11,293 clinicians in the group
- Digestive Health Associates of Southern California16 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), California →
Other nurse anesthetists in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Other clinicians in Southern California Permanente Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043048846 |
| 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