Pei Yan Chen, MD
Nephrology · Birmingham, ALNPI 1952327157
Payments from drug & device makers
Across 17 payments — averaging $17.59 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Otsuka America Pharmaceutical, Inc.$65
- Amgen$64
- Vifor Pharma, Inc.$64
- Akebia Therapeutics Inc$44
- Fresenius USA Marketing, Inc.$20
- AstraZeneca$15
- plus $27 from 2 others
What the payments were for
- Food & beverage$299100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | 4 | $65 |
| Amgen | 3 | $64 |
| Vifor Pharma, Inc. | 4 | $64 |
| Akebia Therapeutics Inc | 2 | $44 |
| Fresenius USA Marketing, Inc. | 1 | $20 |
| AstraZeneca | 1 | $15 |
| Mallinckrodt Enterprises LLC | 1 | $14 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $13 |
How this compares
$299 in reported general payments places this provider in the 20th percentile of 164 nephrology providers in Alabama.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| ProsolParenteral Amino Acid 20% No.1 | 32 | $4,536 |
| Febuxostat | 17 | $1,924 |
| Calcium Acetate | 15 | $1,612 |
| Allopurinol | 131 | $1,317 |
| Atorvastatin Calcium | 67 | $1,018 |
| Potassium Chloride | 46 | $767 |
| Amlodipine Besylate | 83 | $602 |
| Tamsulosin Hcl | 21 | $457 |
| Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril | 16 | $415 |
| Metoprolol Succinate | 27 | $400 |
| Omeprazole | 27 | $399 |
| Calcitriol | 18 | $370 |
| Metoprolol Tartrate | 38 | $364 |
| Spironolactone | 40 | $360 |
| Levothyroxine Sodium | 26 | $350 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Birmingham
- Dana RizkBirmingham$2.6M
- Eric WallaceBirmingham$1.3M
- Michal MrugBirmingham$793K
- Gaurav AgarwalBirmingham$187K
- Orlando GutierrezBirmingham$175K
- Graham TownsBirmingham$154K
- Song Ching OngBirmingham$152K
- David WarnockBirmingham$128K
- Ashita TolwaniBirmingham$93K
- Claretha LyasBirmingham$76K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.