Mark Tidswell, MD
Critical Care Medicine · Springfield, MANPI 1699722066
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $134,988 of the $135,214 with a category attached, or 99.8%. AstraZeneca accounts for 84.8% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2021 at $122,575 and has fallen 99.9% since, to $159 in 2024. Among critical care medicine clinicians in MA 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 18 payments — averaging $7511.86 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$115K
- GSK$16K
- Celltrion, Inc.$5K
- Novartis$86
- Dompe US, Inc.$73
- Fisher & Paykel Healthcare Inc$67
Across 158 payments — averaging $6427.03 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.
- AstraZeneca$791K
- Novartis$103K
- Dompe Farmaceutici S.p.a.$71K
- Ferring International Pharmascience Center US$30K
- E.r. Squibb & Sons, L.L.C.$12K
- Biontech SE$8K
What the payments were for
- Consulting fees$134,988100%
- Food & beverage$2260%
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 |
|---|---|---|
| AstraZeneca | 5 | $114,600 |
| GSK | 7 | $15,750 |
| Celltrion, Inc. | 2 | $4,638 |
| Novartis | 1 | $86 |
| Dompe US, Inc. | 1 | $73 |
| Fisher & Paykel Healthcare Inc | 2 | $67 |
How this compares
$135,214 in reported general payments places this provider in the 95th percentile of 158 critical care medicine providers in Massachusetts.
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 critical care medicine in Springfield
- William McGeeSpringfield$32K
- Andrey PavlovSpringfield$2K
- Richard JudaSpringfield$1K
- Joshua AllgaierSpringfield$665
- Richard ChannickBoston$638K
- Ioana PrestonBurlington$544K
- Benjamin MedoffBoston$98K
- Jerome CrowleyBoston$38K
- Diana Espinoza BarreraBoston$17K
- Raghu SeethalaWeymouth$14K
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.