Guy Delorefice, M.D.
NPI 1952426421ActiveIndividual· Internal Medicine· Sonoma, CA
Internal Medicine (M.D.) in Sonoma, California, trained at Creighton University School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $267,381 for 3,260 claims, against $96,087 paid for services in 2024.
Overview
| NPI | 1952426421 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 20, 2007 |
| Last updated in NPPES | Jun 18, 2026 |
| Certified by provider | Jun 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A0689180 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 199 |
|---|---|
| Services billed | 1,798 across 41 procedure codes |
| Paid by Medicare | $96,087 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,260 · 7,064 30-day fills |
|---|---|
| Patients | 199 |
| Total drug cost | $267,381 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Creighton University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Providence Queen of the Valley Medical CenterNapa, CA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
- Sonoma Valley HospitalSonoma, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Sonoma
- 1356419931
- 1033446125
- 1619512548
- 1437313863
- 1437532652
- 1306143169
- 1255925590
- 1053427989
- 1881986206
- 1619985348
- 1801848601
- 1679564611