Dennis Namphong Phan, MD
NPI 1437238342ActiveIndividual· Internal Medicine, Nephrology· Salinas, CA
Internal Medicine, Nephrology (MD) in Salinas, California, trained at Temple University School of Medicine (class of 2000). In 2024 Medicare paid $1,974,698 for 896 patients, and Part D covered 2,078 of their prescriptions, 82% of them generic. Calliditas Therapeutics US Inc. was the largest of 13 companies reporting payments in 2025, $669.27 in all, mostly food and beverage.
Overview
| NPI | 1437238342 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 2, 2006 |
| Last updated in NPPES | Mar 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A767040 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 896 |
|---|---|
| Services billed | 108,673 across 81 procedure codes |
| Paid by Medicare | $1,974,698 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,078 · 4,769 30-day fills |
|---|---|
| Patients | 324 |
| Total drug cost | $540,321 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Temple University School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Nephrology |
Medical groups
- Hazel Hawkins Memorial HospitalHollister, CA · 52 clinicians
- Central Coast Nephrology Medical CorporationGilroy, CA · 12 clinicians
Hospital affiliations
- Hazel Hawkins Memorial HospitalHollister, CA
- Natividad Medical CenterSalinas, CA
- Salinas Valley Health Medical CenterSalinas, CA
- Santa Clara Valley Medical CenterSan Jose, CA
Other facilities
- Shc GilroyDialysis facility · Gilroy, CA
- Shc HollisterDialysis facility · Hollister, CA
- Shc Morgan HillDialysis facility · Morgan Hill, CA
Industry payments (Open Payments)
- 2025$669.27 · 35 payments from 13 companies
- 2024$674.15 · 36 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $173.07 | 12 |
| Travere Therapeutics, Inc. | $114.26 | 5 |
| Fresenius USA Marketing, Inc. | $80.26 | 4 |
| Amgen Inc. | $76.29 | 4 |
| Mallinckrodt Hospital Products Inc. | $46.36 | 2 |
What the 2025 payments were for
- Food and Beverage$669.27 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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