Randall Funderburk, MD
Retina Specialist · Chattanooga, TNNPI 1699771931
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 96.6% of the total across 24 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 5 manufacturers reported payments, led by Apellis Pharmaceuticals, Inc. at 42.9% of the total. 2025 is the largest year on record at $297, more than ten times the $17 reported in 2021. That places this record below the midpoint for retina specialist clinicians in TN, where the typical reported total is $3,018.
Across 24 payments — averaging $20.92 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Apellis Pharmaceuticals, Inc.$215
- Genentech USA, Inc.$177
- Astellas Pharma US Inc$71
- Regeneron Healthcare Solutions, Inc.$22
- AbbVie$17
What the payments were for
- Grants$173%
- Food & beverage$48597%
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 |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | 10 | $215 |
| Genentech USA, Inc. | 9 | $177 |
| Astellas Pharma US Inc | 3 | $71 |
| Regeneron Healthcare Solutions, Inc. | 1 | $22 |
| AbbVie | 1 | $17 |
How this compares
$502 in reported general payments places this provider in the 5th percentile of 58 retina specialist providers in Tennessee.
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 | 17 | $793 |
| Ketorolac Tromethamine | 20 | $691 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Chattanooga
- Pedro Monsalve DiazChattanooga$3K
- John StoneChattanooga$3K
- Steve CharlesGermantown$5.8M
- Carl AwhNashville$1.3M
- Peter SonkinNashville$949K
- Brandon BusbeeNashville$566K
- Eric SchneiderNashville$134K
- David ReichsteinNashville$114K
- Akshay ThomasNashville$108K
- Franco RecchiaNashville$72K
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.