Roberto Manllo-Karim, MD
Nephrology · McAllen, TXNPI 1891794616
Payments from drug & device makers
Across 2,867 payments — averaging $534.65 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Akebia Therapeutics Inc$1.5M
- Otsuka Pharmaceutical Development & Commercialization, Inc.$13K
- GSK$7K
- AstraZeneca$7K
- Ardelyx, Inc.$4K
- Fresenius USA Marketing, Inc.$338
- plus $1K from 11 others
What the payments were for
- Consulting fees$5,05057%
- Travel & lodging$1,16513%
- Food & beverage$2,52929%
- Education$1291%
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 |
|---|---|---|
| Akebia Therapeutics Inc | 2,774 | $1,499,617 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 1 | $13,394 |
| GSK | 8 | $7,215 |
| AstraZeneca | 17 | $6,825 |
| Ardelyx, Inc. | 4 | $4,250 |
| Fresenius USA Marketing, Inc. | 17 | $338 |
| Amgen(2 entities) | 18 | $303 |
| Otsuka America Pharmaceutical, Inc. | 10 | $275 |
| Sanofi | 4 | $196 |
| Novo Nordisk | 2 | $139 |
| Aurinia Pharma U.S., Inc. | 3 | $72 |
| Mallinckrodt Hospital Products Inc. | 3 | $65 |
| Calliditas Therapeutics US Inc. | 2 | $41 |
| Gilead | 1 | $33 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $31 |
| Vifor Pharma, Inc. | 1 | $20 |
| Boehringer Ingelheim | 1 | $16 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$1,532,829 in reported general payments places this provider in the 95th percentile of 1,070 nephrology providers in Texas.
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 |
|---|---|---|
| AuryxiaFerric Citrate | 90 | $194,633 |
| FarxigaDapagliflozin Propanediol | 264 | $165,027 |
| VelphoroSucroferric Oxyhydroxide | 17 | $89,902 |
| JardianceEmpagliflozin | 62 | $38,690 |
| VeltassaPatiromer Calcium Sorbitex | 28 | $27,583 |
| Sevelamer Carbonate | 57 | $21,083 |
| KerendiaFinerenone | 18 | $15,142 |
| LokelmaSodium Zirconium Cyclosilicate | 18 | $14,391 |
| Cinacalcet Hcl | 17 | $14,077 |
| ProcritEpoetin Alfa | 24 | $10,623 |
| DapagliflozinDapagliflozin Propanediol | 11 | $5,127 |
| Potassium Citrate ErPotassium Citrate | 43 | $1,948 |
| Calcium Acetate | 12 | $1,233 |
| Metolazone | 31 | $857 |
| Nifedipine ErNifedipine | 44 | $842 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Akebia Therapeutics IncAuryxia | $1,499,617 | $194,63390 claims |
| AstraZenecaFarxiga, Lokelma | $6,825 | $179,417282 claims |
| Fresenius USA Marketing, Inc.Velphoro | $338 | $89,90217 claims |
| Boehringer IngelheimJardiance | $16 | $38,69062 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 1,070 nephrology providers in Texas.
Other nephrology in McAllen
- Pablo PergolaSan Antonio$14.2M
- German HernandezEl Paso$9.7M
- Sreedhar MandayamHouston$7M
- Tahira AlvesSan Antonio$6.1M
- Carl DukesSan Antonio$5.9M
- Chinonye Ogbonnaya-OdorSan Antonio$4.6M
- Marializa BernardoHouston$4.2M
- Judith BettsAustin$3.7M
- Wesley CalhounSan Antonio$3.5M
- Adam FromeThe Woodlands$3.1M
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.