Anthony Paul Nicolaysen, MD
NPI 1154869576ActiveIndividual· Internal Medicine, Nephrology· Mission Hills, CA
Internal Medicine, Nephrology (MD) in Mission Hills, California, trained at Oregon Health Sciences University School of Medicine (class of 2018). In 2024 Medicare paid $197,075 for 538 patients, and Part D covered 795 of their prescriptions, 71% of them generic. Galderma Laboratories, L.P. was the largest of 12 companies reporting payments in 2025, $762.76 in all, mostly food and beverage.
Overview
| NPI | 1154869576 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Feb 6, 2017 |
| Last updated in NPPES | Jul 16, 2025 |
| Certified by provider | Jul 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A174994 | 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 | 538 |
|---|---|
| Services billed | 2,327 across 24 procedure codes |
| Paid by Medicare | $197,075 |
Part D prescriptions in 2024
| Prescriptions (claims) | 795 · 1,602 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $198,560 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical groups
- Prohealth Partners, A Medical GroupLong Beach, CA · 239 clinicians
- Kidney Consultants Medical Group IncMission Hills, CA · 13 clinicians
Hospital affiliations
- Henry Mayo Newhall HospitalValencia, CA
- Northridge Hospital Medical CenterNorthridge, CA
- Pacifica Hospital of the ValleySun Valley, CA
- Providence Holy Cross Medical CenterMission Hills, CA
- Valley Presbyterian HospitalVan Nuys, CA
Other facilities
- Northridge Kidney Center, LLCDialysis facility · Northridge, CA
- Usrc Panorama DialysisDialysis facility · Panorama City, CA
Industry payments (Open Payments)
- 2025$762.76 · 31 payments from 12 companies
- 2024$800.08 · 32 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Galderma Laboratories, L.P. | $266.88 | 9 |
| Abbvie Inc. | $164.26 | 6 |
| Vifor Pharma, Inc. | $56.82 | 2 |
| Amgen Inc. | $54.62 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $44.67 | 2 |
What the 2025 payments were for
- Food and Beverage$762.76 · 31 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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