Quick answers
- Where does Gregory Crossman see patients?
- Medicare's clinician data lists 1 practice location in San Rafael, CA. Call before your visit to confirm the address.
- What is Gregory Crossman's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Gregory Crossman accept Medicare assignment?
- Medicare's clinician data says Gregory Crossman may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Gregory Crossman?
- (415) 446-7285, as listed in official Medicare / NPI Registry data.
- What is Gregory Crossman's NPI number?
- 1316133531. 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 Gregory Crossman is enrolled with Medicare (CMS data updated 2026-10-02).
- 4340 Redwood Hwy, Suite 106San Rafael, CA 94903 (415) 446‑7285
Specialties
- Chiropracticprimary
Other chiropractors in San Rafael
Clinicians with the same Medicare primary specialty in San Rafael, CA — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | Life Chiropractic College - West |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1316133531 |
| 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