Ralph Louis Da Graca, MD
NPI 1861430456ActiveIndividual· Anesthesiology· Orange, CA
Anesthesiology (MD) with Allied Anesthesia Medical Group Inc, practicing in Orange, California. Medicare paid $44,222 for services to 273 patients in 2024. Octapharma USA, Inc. was the largest of 2 companies reporting payments in 2025, $155.18 in all, mostly food and beverage. Lists Hoag Orthopedic Institute and 1 other hospital as hospital affiliations.
Overview
| NPI | 1861430456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 3, 2006 |
| Last updated in NPPES | Feb 25, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | A74313 | CA |
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) | Enrolled Practitioner - Anesthesiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 273 |
|---|---|
| Services billed | 384 across 45 procedure codes |
| Paid by Medicare | $44,222 |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Anesthesiology |
Medical group
- Allied Anesthesia Medical Group IncOrange, CA · 191 clinicians
Hospital affiliations
- Hoag Orthopedic InstituteIrvine, CA
- Providence St. Joseph HospitalOrange, CA
Industry payments (Open Payments)
- 2025$155.18 · 2 payments from 2 companies
- 2024$119.03 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Octapharma USA, Inc. | $123.72 | 1 |
| Merck Sharp & Dohme LLC | $31.46 | 1 |
What the 2025 payments were for
- Food and Beverage$155.18 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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