Robert Tatum
Obstetrics · Knoxville, TNNPI 1699798884
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 101 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 21 manufacturers reported payments, led by AbbVie at 42.3% of the total. Reporting peaked in 2021 at $542 and has fallen 73.5% since, to $143 in 2023. That places this record below the midpoint for obstetrics clinicians in TN, where the typical reported total is $1,729.
Across 101 payments — averaging $17.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$732
- Hologic Sales And Service, LLC$138
- Exeltis, USA Inc.$107
- Avion Pharmaceuticals$101
- Daiichi Sankyo Inc.$95
- Mayne Pharma Commercial LLC$80
- plus $474 from 15 others
What the payments were for
- Food & beverage$1,729100%
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 |
|---|---|---|
| AbbVie(2 entities) | 41 | $732 |
| Hologic Sales And Service, LLC | 13 | $138 |
| Exeltis, USA Inc. | 7 | $107 |
| Avion Pharmaceuticals | 5 | $101 |
| Daiichi Sankyo Inc. | 6 | $95 |
| Mayne Pharma Commercial LLC | 5 | $80 |
| Aspira Women's Health Inc | 1 | $72 |
| Therapeuticsmd, Inc. | 5 | $65 |
| Lundbeck LLC | 3 | $50 |
| Ascend Therapeutics US, LLC | 2 | $40 |
| Pharmacosmos Therapeutics Inc. | 2 | $40 |
| Myovant Sciences Inc. | 2 | $35 |
| Olympus America Inc. | 1 | $27 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $24 |
| CSL Behring | 1 | $23 |
| Roche Diagnostics Corporation | 1 | $21 |
| Argenx US, Inc. | 1 | $19 |
| Agile Therapeutics, Inc. | 1 | $16 |
| BD | 1 | $15 |
| Minerva Surgical, Inc | 1 | $14 |
| Amgen | 1 | $13 |
How this compares
$1,729 in reported general payments places this provider in the 50th percentile of 26 obstetrics providers in Tennessee.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Estradiol | 23 | $347 |
Paid to pharmacies, not to this prescriber.
Other obstetrics in Knoxville
- Erin SaundersKnoxville$6K
- Jerrie Haney-WeaverKnoxville$4K
- Kenneth O KelleyKnoxville$3K
- Lionel McCollumKnoxville$16
- Kreg JonsonChattanooga$6K
- Jessica RuffinMemphis$3K
- George FoxSmyrna$3K
- Deidrea GrandberryMemphis$3K
- Kendra HayslettMartin$3K
- Stephanie DallasNashville$3K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.