Tom Yang, M.D.
NPI 1548346695ActiveIndividual· Internal Medicine, Nephrology· Visalia, CA
Internal Medicine, Nephrology (M.D.) with Central Valley General Hospital, practicing in Visalia, California. Their prescriptions cost Medicare Part D more than their services did: $1,636,578 for 5,682 claims, against $975,364 paid for services in 2024. Ardelyx, Inc. was the largest of 13 companies reporting payments in 2025, $3,478 in all, mostly food and beverage. Lists Adventist Health Hanford and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1548346695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 31, 2006 |
| Last updated in NPPES | Oct 3, 2023 |
| Certified by provider | Oct 3, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A88613 | 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 | 1,185 |
|---|---|
| Services billed | 9,722 across 30 procedure codes |
| Paid by Medicare | $975,364 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,682 · 10,378 30-day fills |
|---|---|
| Patients | 889 |
| Total drug cost | $1,636,578 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Central Valley General HospitalHanford, CA · 88 clinicians
Hospital affiliations
- Adventist Health HanfordHanford, CA
- Adventist Health ReedleyReedley, CA
- Adventist Health TulareTulare, CA
- Coalinga Regional Medical CenterCoalinga, CA
- Kaweah Health Medical CenterVisalia, CA
Other facilities
- Davita Hanford DialysisDialysis facility · Hanford, CA
- Davita Lemoore DialysisDialysis facility · Lemoore, CA
- Davita Sequoia DialysisDialysis facility · Hanford, CA
- Davita Tulare DialysisDialysis facility · Tulare, CA
- Davita Visalia Vineyard DialysisDialysis facility · Visalia, CA
Industry payments (Open Payments)
- 2025$3,478 · 176 payments from 13 companies
- 2024$2,785 · 173 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $695.56 | 24 |
| Fresenius USA Marketing, Inc. | $648.83 | 42 |
| Astrazeneca Pharmaceuticals LP | $319.45 | 20 |
| Amgen Inc. | $305.28 | 24 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $302.31 | 13 |
What the 2025 payments were for
- Food and Beverage$3,478 · 176 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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