Diana Hess, MD
NPI 1295296275ActiveIndividual· Internal Medicine· Castro Valley, CA
Internal Medicine (MD) in Castro Valley, California, trained at Univ of Central Florida, College of Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $46,070 for 683 claims, against $11,648 paid for services in 2024.
Overview
| NPI | 1295296275 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 30, 2019 |
| Last updated in NPPES | Oct 30, 2024 |
| Certified by provider | Oct 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 178427 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 107 |
|---|---|
| Services billed | 229 across 21 procedure codes |
| Paid by Medicare | $11,648 |
Part D prescriptions in 2024
| Prescriptions (claims) | 683 · 1,529 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $46,070 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Univ of Central Florida, College of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- Eden Medical CenterCastro Valley, CA
Other facilities
- Sutter Care at HomeHome health agency · Concord, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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