Gregory A. Chambers, MD
NPI 1972546406ActiveIndividual· Surgery· Los Angeles, CA
Surgery (MD) in Los Angeles, California, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 1995). Mostly services rather than prescriptions: Medicare paid $19,902 for 94 patients in 2024, with only 15 Part D claims. Intuitive Surgical, Inc. was the largest of 5 companies reporting payments in 2025, $2,581 in all, mostly travel and lodging.
Overview
| NPI | 1972546406 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 13, 2006 |
| Last updated in NPPES | Nov 1, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A62663 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 94 |
|---|---|
| Services billed | 130 across 28 procedure codes |
| Paid by Medicare | $19,902 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15 · 15 30-day fills |
|---|---|
| Total drug cost | $78.71 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Kansas School of Med (Kc/Wich/Sal) |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | General Surgery |
Medical group
- Acute Care Surgery Medical Group IncTwin Falls, ID · 204 clinicians
Hospital affiliation
- Memorialcare Long Beach Medical CenterLong Beach, CA
Industry payments (Open Payments)
- 2025$2,581 · 19 payments from 5 companies
- 2024$5,388 · 23 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $1,193 | 7 |
| Stryker Corporation | $586.12 | 5 |
| Tela Bio, Inc. | $545.51 | 5 |
| Aroa Biosurgery Incorporated | $153.14 | 1 |
| Davol Inc. | $102.96 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,342 · 6 payments
- Food and Beverage$1,239 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery providers in Los Angeles
- 1740385624
- 1992458608
- 1245400720
- 1205426343
- 1528430519
- 1619347663
- 1487546636
- 1063544187
- 1992030944
- 1881717635
- 1801551403
- 1770721235