Daniel T. Leininger, D.O.
NPI 1164956264ActiveIndividual· Internal Medicine, Nephrology· La Mesa, CA
Internal Medicine, Nephrology (D.O.) with Sharp Rees-Stealy Medical Group Inc and 2 other groups, practicing in La Mesa, California. Their prescriptions cost Medicare Part D more than their services did: $377,915 for 1,511 claims, against $162,049 paid for services in 2024. Vantive US Healthcare LLC reported $44.55 in payments in 2025, mostly food and beverage. Lists Grossmont Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1164956264 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Apr 14, 2017 |
| Last updated in NPPES | Jan 16, 2026 |
| Certified by provider | Jan 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 20A16789 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 452 |
|---|---|
| Services billed | 1,735 across 20 procedure codes |
| Paid by Medicare | $162,049 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,511 · 3,179 30-day fills |
|---|---|
| Patients | 263 |
| Total drug cost | $377,915 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical groups
- Sharp Rees-Stealy Medical Group IncSan Diego, CA · 884 clinicians
- Emergency and Acute Care Medical CorporationLa Mesa, CA · 422 clinicians
- Balboa Nephrology Medical Group IncFountain Valley, CA · 76 clinicians
Hospital affiliations
- Grossmont HospitalLa Mesa, CA
- Sharp Memorial HospitalSan Diego, CA
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Other facilities
- Davita San Diego South DialysisDialysis facility · National City, CA
- Fresenius Medical Care Balboa East CountyDialysis facility · El Cajon, CA
- Rai - Mission Gorge - San DiegoDialysis facility · San Diego, CA
Industry payments (Open Payments)
- 2025$44.55 · 1 payment from 1 company
- 2024$424.53 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vantive US Healthcare LLC | $44.55 | 1 |
What the 2025 payments were for
- Food and Beverage$44.55 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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