Ronald Mayfield
Endocrinology, Diabetes & Metabolism · Spartanburg, SCNPI 1134199755
Payments from drug & device makers
Across 464 payments — averaging $19,265 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Eli Lilly$6.6M
- Novartis$549K
- Amgen$522K
- Sanofi US Services Inc.$375K
- Bayer$213K
- Regeneron$206K
- plus $492K from 13 others
Across 23 payments — averaging $5757.22 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Eli Lilly$108K
- Novo Nordisk AS$25K
What the payments were for
- Consulting fees$1,16385%
- Food & beverage$1108%
- Education$977%
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 |
|---|---|---|
| Eli Lilly | 149 | $6,580,824 |
| Novartis | 13 | $548,673 |
| Amgen | 5 | $522,210 |
| Sanofi US Services Inc. | 55 | $375,498 |
| Bayer | 101 | $213,147 |
| Regeneron | 69 | $206,284 |
| Applied Therapeutics, Inc. | 32 | $129,478 |
| Akcea Therapeutics, Inc. | 6 | $122,836 |
| AstraZeneca | 9 | $120,355 |
| Novo Nordisk AS | 6 | $45,977 |
| Biocryst Pharmaceuticals, Inc. | 3 | $18,117 |
| Astrazeneca UK Limited | 2 | $14,408 |
| Gilead | 2 | $12,630 |
| Pfizer | 4 | $11,165 |
| Lexicon Pharmaceuticals, Inc. | 1 | $10,737 |
| Boehringer Ingelheim B.v. | 1 | $6,500 |
| Novo Nordisk | 4 | $117 |
| Lilly USA, LLC | 1 | $18 |
| Sanofi-aventis U.S. LLC | 1 | $16 |
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.
- FARXIGA$1,163
How this compares
$8,938,989 in reported general payments places this provider in the 95th percentile of 99 endocrinology, diabetes & metabolism providers in South Carolina.
See all endocrinology, diabetes & metabolism providers in South Carolina →
Other endocrinology, diabetes & metabolism in Spartanburg
- Mayte SandrinSpartanburg$10K
- Donald EagertonMyrtle Beach$7.9M
- Beatrice HullCharleston$987K
- Anne LarochelleMyrtle Beach$678K
- Gauri DhirMyrtle Beach$417K
- Cory WhiteGreenville$413K
- Louis HaenelCharleston$377K
- Vonda CalcuttWalterboro$368K
- Kathie HermayerCharleston$337K
- Ray VaughtersAiken$321K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.