Shenia Singleton, MD
Internal Medicine · Summerville, SCNPI 1225697931
Payments from drug & device makers
Across 13 payments — averaging $19.37 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Exact Sciences$79
- Pfizer$53
- AstraZeneca$35
- Xeris Pharmaceuticals, Inc.$24
- Dexcom, Inc.$22
- Axsome Therapeutics, Inc.$20
- plus $19 from 1 others
What the payments were for
- Food & beverage$252100%
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.
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 |
|---|---|---|
| Exact Sciences | 4 | $79 |
| Pfizer | 3 | $53 |
| AstraZeneca | 2 | $35 |
| Xeris Pharmaceuticals, Inc. | 1 | $24 |
| Dexcom, Inc. | 1 | $22 |
| Axsome Therapeutics, Inc. | 1 | $20 |
| Lilly USA, LLC | 1 | $19 |
How this compares
$252 in reported general payments places this provider in the 45th percentile of 1,498 internal medicine providers in South Carolina.
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 internal medicine in Summerville
- David BolsterSummerville$2.3M
- Colby GrossmanSummerville$1.4M
- Rica SantiagoMt Pleasant$10.7M
- Richard MillsMt Pleasant$5.5M
- Yvonne DavisMount Pleasant$2.4M
- Amit ShahIndian Land$1.4M
- Philip NicolMurrells Inlet$782K
- Carl SofleyAnderson$673K
- Carl MitchellColumbia$564K
- Jerry BackNorth Charleston$322K
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.