David Katz, MD
Neurology · N Bethesda, MDNPI 1740283480
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $123,049 of the $164,271 with a category attached, or 74.9%. Biogen accounts for 69.9% of it on its own, with 16 other manufacturers making up the rest. Reporting peaked in 2019 at $85,262 and has fallen 99.4% since, to $539 in 2025. Among neurology clinicians in MD with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 356 payments — averaging $461.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Biogen$115K
- AstraZeneca$44K
- Banner Life Sciences, LLC$2K
- EMD Serono, Inc.$844
- Novartis$773
- Teva Pharmaceuticals USA, Inc.$706
- plus $1K from 11 others
Across 66 payments — averaging $2576.71 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.
- Biogen$134K
- Roche Products Limited$36K
- Novartis$231
What the payments were for
- Consulting fees$25,24215%
- Speaking & faculty fees$123,04975%
- Travel & lodging$7,3054%
- Food & beverage$8,6735%
- Education$20%
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 |
|---|---|---|
| Biogen | 131 | $114,846 |
| AstraZeneca | 77 | $43,951 |
| Banner Life Sciences, LLC | 2 | $1,700 |
| EMD Serono, Inc. | 27 | $844 |
| Novartis | 66 | $773 |
| Teva Pharmaceuticals USA, Inc. | 6 | $706 |
| Amgen(2 entities) | 19 | $418 |
| UCB, Inc. | 6 | $231 |
| AbbVie(2 entities) | 6 | $199 |
| Glaukos Corporation | 3 | $189 |
| TG Therapeutics, Inc. | 3 | $184 |
| Genentech USA, Inc. | 4 | $84 |
| Genentech, Inc. | 1 | $71 |
| Sanofi | 2 | $27 |
| Abbott | 1 | $20 |
| Sunovion Pharmaceuticals Inc. | 1 | $15 |
| Argenx US, Inc. | 1 | $14 |
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
$164,271 in reported general payments places this provider in the 95th percentile of 442 neurology providers in Maryland.
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 |
|---|---|---|
| Kesimpta PenOfatumumab | 21 | $196,384 |
| GammaplexImmun Glob G(Igg)/Gly/Iga 0-50 | 26 | $127,533 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 19 | $118,055 |
| Glatiramer Acetate | 11 | $58,276 |
| Ajovy AutoinjectorFremanezumab-Vfrm | 22 | $26,770 |
| Emgality PenGalcanezumab-Gnlm | 15 | $12,896 |
| Pyridostigmine Bromide | 67 | $5,487 |
| Mycophenolate Mofetil | 38 | $5,019 |
| Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine | 12 | $4,656 |
| FingolimodFingolimod Hcl | 14 | $3,201 |
| Gabapentin | 80 | $2,940 |
| Oxcarbazepine | 36 | $2,454 |
| Nortriptyline Hcl | 27 | $2,059 |
| Levetiracetam | 37 | $1,256 |
| Carbidopa-LevodopaCarbidopa/Levodopa | 14 | $1,196 |
Paid to pharmacies, not to this prescriber.
Other neurology in N Bethesda
- Daniel BeckerLutherville$1.6M
- Sangjin OhGlen Burnie$1.5M
- Pavel KleinBethesda$709K
- Ruwani GunawardaneFulton$479K
- Michael PolydefkisBaltimore$371K
- David CornblathLutherville$345K
- Shiv SaidhaBaltimore$298K
- Santiago Mazuera MesiaBaltimore$258K
- Bruce RabinLutherville$228K
- Thomas CrawfordBaltimore$215K
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.