Grant Daniel Shifflett, M.D.
Opted out of Medicare from February 2022 to February 2028. Orthopaedic Surgery, Orthopaedic Surgery of the Spine (M.D.) in Marina Del Rey, California, licensed in CA, IL and NY, with an NPI issued in March 2010. Part D covered 93 prescriptions written in 2024, 100% of them generic. Centinel Spine, LLC was the largest of 5 companies reporting payments in 2025, $27,533 in all, mostly consulting fees.
Overview
| NPI | 1932423456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 26, 2010 |
| Last updated in NPPES | Nov 10, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Orthopaedic Surgery of the Spine Primary | 207XS0117X | A143697 | CA |
| Orthopaedic Surgery, Orthopaedic Surgery of the Spine | 207XS0117X | 036138615 | IL |
| Orthopaedic Surgery, Orthopaedic Surgery of the Spine | 207XS0117X | 271020 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Feb 24, 2022 – Feb 24, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 93 · 99 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $967.81 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$27,533 · 20 payments from 5 companies
- 2024$6,281 · 13 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Centinel Spine, LLC | $16,954 | 9 |
| Kyocera Medical Technologies, Inc. | $10,375 | 6 |
| Abbott Laboratories | $105.62 | 1 |
| Boston Scientific Corporation | $63.63 | 3 |
| Vertex Pharmaceuticals Incorporated | $34.86 | 1 |
What the 2025 payments were for
- Consulting Fee$24,605 · 2 payments
- Travel and Lodging$2,350 · 9 payments
- Food and Beverage$578.44 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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