Daniel F. Ikemiyashiro, M.D.
NPI 1801837208ActiveIndividual· Internal Medicine, Nephrology· Merced, CA
Internal Medicine, Nephrology (M.D.) with The Nephrology Group Inc, practicing in Merced, California. Their prescriptions cost Medicare Part D more than their services did: $1,169,795 for 4,108 claims, against $461,358 paid for services in 2024. Glaxosmithkline, LLC. reported $109.01 in payments in 2025, mostly food and beverage. Lists John C Fremont Healthcare District and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1801837208 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 9, 2006 |
| Last updated in NPPES | Oct 26, 2021 |
| Certified by provider | Oct 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A54201 | 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 | 721 |
|---|---|
| Services billed | 6,644 across 46 procedure codes |
| Paid by Medicare | $461,358 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,108 · 10,172 30-day fills |
|---|---|
| Patients | 634 |
| Total drug cost | $1,169,795 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- The Nephrology Group IncFresno, CA · 51 clinicians
Hospital affiliations
- John C Fremont Healthcare DistrictMariposa, CA
- Memorial Hospital Los BanosLos Banos, CA
- Mercy Medical CenterMerced, CA
Other facilities
- Davita Atwater DialysisDialysis facility · Atwater, CA
- Davita Los Banos DialysisDialysis facility · Los Banos, CA
- Davita Pacheco DialysisDialysis facility · Los Banos, CA
- Shc Central MercedDialysis facility · Merced, CA
- Shc MercedDialysis facility · Merced, CA
Industry payments (Open Payments)
- 2025$109.01 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $109.01 | 1 |
What the 2025 payments were for
- Food and Beverage$109.01 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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