Quick answers
- Which hospitals does Gregory A. Chambers work at?
- Medicare's official clinician data lists Gregory A. Chambers at 1 hospital: Memorialcare Long Beach Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Chambers see patients?
- Medicare's clinician data lists 3 practice locations, including Thousand Oaks, CA and Los Angeles, CA. Call before your visit to confirm the address.
- What is Gregory A. Chambers's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Gregory A. Chambers accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Chambers 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 Gregory A. Chambers?
- (805) 497-2727, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Chambers's NPI number?
- 1972546406. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Chambers works
Medicare's Facility Affiliation Data lists Gregory A. Chambers at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorialcare Long Beach Medical CenterLong Beach, CA · Acute Care Hospital · CCN 050485
Practice locations
Addresses where Gregory A. Chambers is enrolled with Medicare (CMS data updated 2026-10-02).
- 215 W Janss RdThousand Oaks, CA 91360 (805) 497‑2727
- 2190 Lynn Rd, Suite 300Thousand Oaks, CA 91360 (805) 600‑4001
- 231 W Vernon Ave, Suite 202Los Angeles, CA 90037 (323) 238‑7192
Group practices
Medicare enrollment lists Gregory A. Chambers as a member of this group (CMS data updated 2026-10-02).
- Acute Care Surgery Medical Group Inc204 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Thousand Oaks
Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972546406 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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