Purak Parikh, MD
Ophthalmology · Nashua, NHNPI 1205198629
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 92 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 22 manufacturers reported payments, led by Alcon at 29.5% of the total. Reporting peaked in 2023 at $723 and has fallen 69.8% since, to $218 in 2025.
Across 92 payments — averaging $24.97 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$677
- Amgen$435
- AbbVie$156
- Bausch & Lomb Americas Inc.$137
- Aerie Pharmaceuticals, Inc.$134
- Ivantis, Inc$122
- plus $636 from 16 others
What the payments were for
- Food & beverage$2,297100%
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 |
|---|---|---|
| Alcon | 26 | $677 |
| Amgen(2 entities) | 21 | $435 |
| AbbVie(2 entities) | 7 | $156 |
| Bausch & Lomb Americas Inc. | 6 | $137 |
| Aerie Pharmaceuticals, Inc. | 2 | $134 |
| Ivantis, Inc | 1 | $122 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 5 | $104 |
| Dompe US, Inc. | 3 | $75 |
| Mallinckrodt Hospital Products Inc. | 2 | $63 |
| Novartis | 3 | $61 |
| Oyster Point Pharma, Inc. | 3 | $56 |
| Biotissue Holdings Inc. | 2 | $39 |
| Johnson & Johnson Vision Care, Inc. | 2 | $39 |
| Johnson & Johnson Surgical Vision, Inc. | 1 | $31 |
| Astellas Pharma US Inc | 1 | $29 |
| Coopervision Inc. | 1 | $24 |
| Glaukos Corporation | 1 | $23 |
| Kala Pharmaceuticals, Inc. | 1 | $20 |
| Sun Pharmaceutical Industries Inc. | 1 | $19 |
| Rayner Intraocular Lenses Limited | 1 | $19 |
| Harrow Eye, LLC | 1 | $18 |
| Omeros Corporation | 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.
How this compares
$2,297 in reported general payments places this provider in the 60th percentile of 80 ophthalmology providers in New Hampshire.
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 |
|---|---|---|
| Prednisolone Acetate | 106 | $4,906 |
| Fluorometholone | 57 | $3,979 |
| Latanoprost | 374 | $2,884 |
| ValacyclovirValacyclovir Hcl | 13 | $1,298 |
| Timolol Maleate | 60 | $772 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 71 | $653 |
| ErythromycinErythromycin Base | 22 | $529 |
| Ofloxacin | 41 | $385 |
| Acyclovir | 11 | $176 |
| Doxycycline Monohydrate | 12 | $127 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Nashua
- John DagianisNashua$9K
- Timothy BlakeNashua$5K
- Patrick RiddleNashua$4K
- Faith BirnbaumNashua$4K
- Charles WingateNashua$2K
- Dane SlentzDerry$127K
- Jason SzelogPortsmouth$71K
- Andrew CatomerisLebanon$56K
- Jennifer LingPortsmouth$9K
- Mohamed GuenenaDerry$8K
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.