David Sherman, MD
Nephrology · Glendale, CANPI 1235164294
Payments from drug & device makers
What this record shows
This record is dominated by education: $61 of the $85 with a category attached, or 72.1%. Otsuka America Pharmaceutical, Inc. accounts for 72.1% of it on its own, with 1 other manufacturer making up the rest. That places this record below the midpoint for nephrology clinicians in CA, where the typical reported total is $1,018.
Across 2 payments — averaging $42.44 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Otsuka America Pharmaceutical, Inc.$61
- Exact Sciences$24
Across 23 payments — averaging $10,569 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- CSL Behring$243K
What the payments were for
- Food & beverage$2428%
- Education$6172%
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. | 1 | $61 |
| Exact Sciences | 1 | $24 |
How this compares
$85 in reported general payments places this provider in the 10th percentile of 1,341 nephrology providers in California.
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 |
|---|---|---|
| Sevelamer Hcl | 29 | $33,775 |
| Sevelamer Carbonate | 14 | $6,389 |
| TradjentaLinagliptin | 11 | $5,164 |
| Calcium Acetate | 22 | $2,052 |
| SynthroidLevothyroxine Sodium | 22 | $1,482 |
| Omeprazole-Sodium BicarbonateOmeprazole/Sodium Bicarbonate | 13 | $845 |
| Pantoprazole Sodium | 74 | $802 |
| Chlorthalidone | 42 | $756 |
| Spironolactone | 26 | $583 |
| Metoprolol Succinate | 29 | $504 |
| Tamsulosin Hcl | 30 | $502 |
| Allopurinol | 68 | $461 |
| Amlodipine Besylate | 73 | $404 |
| Losartan Potassium | 58 | $382 |
| Donepezil Hcl | 19 | $375 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Glendale
- Anjay RastogiLos Angeles$2.2M
- Glenn ChertowStanford$2M
- Luis AlvarezPalo Alto$1.8M
- Jose MorfinSacramento$1M
- Rodolfo BatarseRancho Mirage$910K
- Vandana MathurWoodside$769K
- Yasir QaziOrange$618K
- Rafael VillicanaLoma Linda$610K
- Sunil PatelApple Valley$509K
- Suphamai BunnapradistLos Angeles$498K
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.