Elizabeth Riordan, MD
Surgery · Meriden, CTNPI 1528078995
Payments from drug & device makers
Across 32 payments — averaging $73.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Carl Zeiss Meditec, Inc.$1K
- Myriad Genetic Laboratories, Inc.$354
- Merck$163
- Stryker$149
- KUB Technologies Inc.$83
- Solventum Corporation$60
- plus $129 from 5 others
What the payments were for
- Travel & lodging$1,23453%
- Food & beverage$1,11247%
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 |
|---|---|---|
| Carl Zeiss Meditec, Inc. | 2 | $1,408 |
| Myriad Genetic Laboratories, Inc. | 14 | $354 |
| Merck | 7 | $163 |
| Stryker | 2 | $149 |
| KUB Technologies Inc. | 1 | $83 |
| Solventum Corporation | 1 | $60 |
| Kerecis Limited | 1 | $34 |
| CSL Behring | 1 | $29 |
| Merit Medical Systems Inc | 1 | $25 |
| Integra Lifesciences Corporation | 1 | $25 |
| Davol Inc. | 1 | $15 |
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.
- IORT$1,408
- SURG - NEPTUNE$116
How this compares
$2,346 in reported general payments places this provider in the 55th percentile of 289 surgery providers in Connecticut.
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 surgery in Meriden
- Aziz BenbrahimMeriden$23K
- Mark FariesNew Haven$2.6M
- John MortonNew Haven$970K
- Joseph AferzonPortland$712K
- Adrian MaungNew Haven$584K
- Andrew DuffyNew Haven$256K
- Sherard ChiuFairfield$148K
- Nikhilesh SekharFairfield$140K
- Anees ChagparNew Haven$121K
- Roselle CrombieFairfield$113K
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.