Yas Casey
NPI 1336568971ActiveIndividual· Internal Medicine· Loma Linda, CA
Internal Medicine with Darin Rentz DO PC and 2 other groups, practicing in Loma Linda, California. 194 Medicare patients in 2024, $39,284 paid; nearly all of their 176 Part D prescriptions were generic (91%). Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $126.19 in payments in 2025, mostly food and beverage. Lists Kaiser Foundation Hospital Fontana/Ontario and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1336568971 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Apr 10, 2014 |
| Last updated in NPPES | Jan 30, 2020 |
| Certified by provider | Jan 30, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A149800 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 194 |
|---|---|
| Services billed | 515 across 11 procedure codes |
| Paid by Medicare | $39,284 |
Part D prescriptions in 2024
| Prescriptions (claims) | 176 · 184 30-day fills |
|---|---|
| Patients | 99 |
| Total drug cost | $19,676 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Darin Rentz DO PCRedlands, CA · 124 clinicians
- Alertive Healthcare Medical Group APCRiverside, CA · 39 clinicians
- Grace Medical and Wellness ClinicRiverside, CA · 6 clinicians
Hospital affiliations
- Kaiser Foundation Hospital Fontana/OntarioFontana, CA
- Redlands Community HospitalRedlands, CA
- Riverside Community HospitalRiverside, CA
Other facilities
- Alta Vista Healthcare & Wellness CentreNursing home · Riverside, CA
- Redlands Community Hospital D/P SnfNursing home · Redlands, CA
Industry payments (Open Payments)
- 2025$126.19 · 1 payment from 1 company
- 2024$29.25 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $126.19 | 1 |
What the 2025 payments were for
- Food and Beverage$126.19 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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