Quick answers
- Where does John O. Simmonds see patients?
- Medicare's clinician data lists 2 practice locations, including Wilmington, CA. Call before your visit to confirm the address.
- What is John O. Simmonds's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does John O. Simmonds accept Medicare assignment?
- Yes. Medicare's clinician data says John O. Simmonds accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John O. Simmonds?
- (310) 830-0863, as listed in official Medicare / NPI Registry data.
- What is John O. Simmonds's NPI number?
- 1801195912. 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 O. Simmonds is enrolled with Medicare (CMS data updated 2026-10-02).
- 803 Figueroa StWilmington, CA 90744
- 803 N Figueroa StWilmington, CA 90744 (310) 830‑0863
Group practices
Medicare enrollment lists John O. Simmonds as a member of this group (CMS data updated 2026-10-02).
- Harbor Comprehensive Health Inc2 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801195912 |
| 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 2026-10-02, retrieved 2026-10-29
- 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