William Herzog, MD
Interventional Cardiology · Columbia, MDNPI 1902873979
Payments from drug & device makers
Across 767 payments — averaging $1244.21 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- CSL Behring$336K
- Novo Nordisk AS$332K
- Amgen$166K
- Novartis$32K
- Vifor (international) Ltd.$27K
- Boehringer Ingelheim$24K
- plus $38K from 20 others
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 |
|---|---|---|
| CSL Behring | 130 | $335,721 |
| Novo Nordisk AS | 497 | $331,974 |
| Amgen | 27 | $166,093 |
| Novartis | 18 | $31,653 |
| Vifor (international) Ltd. | 9 | $27,480 |
| Boehringer Ingelheim | 15 | $23,730 |
| American Regent | 2 | $22,250 |
| Merck | 11 | $13,881 |
| Terumo Medical Corporation | 6 | $599 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 11 | $204 |
| AstraZeneca | 12 | $197 |
| Medtronic(2 entities) | 5 | $91 |
| Chiesi USA, Inc. | 3 | $71 |
| Johnson & Johnson | 3 | $40 |
| Shockwave Medical, Inc | 2 | $40 |
| Boston Scientific | 1 | $39 |
| E.r. Squibb & Sons, L.L.C. | 3 | $37 |
| Pfizer | 2 | $33 |
| Novo Nordisk | 2 | $31 |
| Bayer | 2 | $31 |
| Abbott | 1 | $29 |
| Cardiovascular Systems Inc. | 1 | $20 |
| Edwards Lifesciences | 1 | $18 |
| Cardinal Health 200 LLC | 1 | $17 |
| Elutia, Inc. | 1 | $15 |
| Irhythm Technologies, Inc. | 1 | $12 |
How this compares
$954,306 in reported general payments places this provider in the 90th percentile of 71 interventional cardiology 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.
Other interventional cardiology in Columbia
- John WangBaltimore$6.4M
- Steven HearneSalisbury$2.6M
- Matthew VossBaltimore$2.6M
- Aloke FinnBaltimore$1.8M
- Michael ChenRockville$679K
- Vinay SatwahGreenbelt$679K
- Jon ResarBaltimore$592K
- Martin AlbornozBaltimore$403K
- Rani HasanBaltimore$374K
- Anuj GuptaBaltimore$285K
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.