Noi Walkenstein, DO
Internal Medicine · Philadelphia, PANPI 1003852013
Payments from drug & device makers
Across 39 payments — averaging $20.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$202
- Astellas Pharma US Inc$108
- Teva Pharmaceuticals USA, Inc.$105
- Novo Nordisk$83
- Genentech USA, Inc.$49
- Takeda Pharmaceuticals U.S.A., Inc.$37
- plus $228 from 11 others
What the payments were for
- Food & beverage$72289%
- Education$9111%
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 |
|---|---|---|
| AbbVie | 10 | $202 |
| Astellas Pharma US Inc | 5 | $108 |
| Teva Pharmaceuticals USA, Inc. | 2 | $105 |
| Novo Nordisk | 4 | $83 |
| Genentech USA, Inc. | 3 | $49 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $37 |
| Lilly USA, LLC | 2 | $35 |
| Boehringer Ingelheim | 2 | $34 |
| Otsuka America Pharmaceutical, Inc. | 1 | $26 |
| Averitas Pharma Inc. | 1 | $20 |
| Idorsia Pharmaceuticals US Inc | 1 | $20 |
| Merck | 1 | $19 |
| Paratek Pharmaceuticals, Inc. | 1 | $16 |
| Amgen | 1 | $15 |
| Myovant Sciences Inc. | 1 | $15 |
| AstraZeneca | 1 | $14 |
| GSK | 1 | $14 |
How this compares
$813 in reported general payments places this provider in the 70th percentile of 5,705 internal medicine providers in Pennsylvania.
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 |
|---|---|---|
| Atorvastatin Calcium | 20 | $434 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 19 | $400 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 30 | $301 |
| Amlodipine Besylate | 22 | $166 |
| Fluticasone Propionate | 17 | $143 |
| Metoprolol Succinate | 12 | $121 |
| Losartan Potassium | 11 | $121 |
| Lisinopril | 16 | $112 |
| Rosuvastatin Calcium | 15 | $107 |
| Furosemide | 13 | $37 |
Paid to pharmacies, not to this prescriber.
Other internal medicine in Philadelphia
- Jonathan EpsteinPhiladelphia$13.1M
- Pitamber DevgonPhiladelphia$7.5M
- Walter KraftPhiladelphia$3.7M
- Daniel RaderPhiladelphia$3.3M
- Archna BajajPhiladelphia$2.9M
- Gary YeomanPhiladelphia$2.4M
- Melina MarmarelisPhiladelphia$2.1M
- Adam WaxmanPhiladelphia$894K
- Donna GavaronePhiladelphia$728K
- Eyob FeyssaPhiladelphia$693K
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.