Quick answers
- Where does Lance A. O'Connor see patients?
- Medicare's clinician data lists 1 practice location in Santa Rosa, CA. Call before your visit to confirm the address.
- What is Lance A. O'Connor's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Lance A. O'Connor accept Medicare assignment?
- Yes. Medicare's clinician data says Lance A. O'Connor 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 Lance A. O'Connor?
- (707) 525-9111, as listed in official Medicare / NPI Registry data.
- What is Lance A. O'Connor's NPI number?
- 1417159419. 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 Lance A. O'Connor is enrolled with Medicare (CMS data updated 2026-10-02).
- 910 Vallejo StSanta Rosa, CA 95404 (707) 525‑9111
Specialties
- Chiropracticprimary
Other chiropractors in Santa Rosa
Clinicians with the same Medicare primary specialty in Santa Rosa, CA — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | Palmer College Chiropractic - West Sunnyvale |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417159419 |
| 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