Avedik Semerjian, MD, FACP, FASN
NPI 1831120591ActiveIndividual· Internal Medicine, Nephrology· Lakewood, CA
Internal Medicine, Nephrology (MD, FACP, FASN) with Southland Renal Medical Group Inc, practicing in Lakewood, California. Their prescriptions cost Medicare Part D more than their services did: $865,065 for 3,460 claims, against $228,012 paid for services in 2024. Ardelyx, Inc. was the largest of 3 companies reporting payments in 2025, $164.28 in all, mostly food and beverage. Lists Memorialcare Long Beach Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1831120591 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, FACP, FASN |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Apr 1, 2020 |
| Certified by provider | Apr 1, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A46344 | 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 | 389 |
|---|---|
| Services billed | 1,684 across 15 procedure codes |
| Paid by Medicare | $228,012 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,460 · 7,080 30-day fills |
|---|---|
| Patients | 410 |
| Total drug cost | $865,065 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Southland Renal Medical Group IncDowney, CA · 8 clinicians
Hospital affiliations
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Pih Health Downey HospitalDowney, CA
- St Mary Medical CenterLong Beach, CA
- Uci Health-LakewoodLakewood, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Bio-Medical Long Beach Community Hemodialysis UnitDialysis facility · Long Beach, CA
- Davita Cerritos DialysisDialysis facility · Cerritos, CA
- Davita Los Alamitos DialysisDialysis facility · Los Alamitos, CA
- Davita Mayfair DialysisDialysis facility · Lakewood, CA
- Davita United Dialysis CenterDialysis facility · Long Beach, CA
Industry payments (Open Payments)
- 2025$164.28 · 4 payments from 3 companies
- 2024$247.11 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $113.95 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $35.87 | 2 |
| Otsuka America Pharmaceutical, Inc. | $14.46 | 1 |
What the 2025 payments were for
- Food and Beverage$164.28 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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