Ronald Mayfield
Endocrinology, Diabetes & Metabolism · Spartanburg, SCNPI 1134199755
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $1,163 of the $1,369 with a category attached, or 84.9%. AstraZeneca accounts for 84.9% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2019 at $1,247 and has fallen 97.0% since, to $37 in 2025. That places this record below the midpoint for endocrinology, diabetes & metabolism clinicians in SC, where the typical reported total is $2,665.
Across 10 payments — averaging $136.92 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$1K
- Novo Nordisk$117
- Novartis$33
- Amgen$24
- Lilly USA, LLC$18
- Sanofi-aventis U.S. LLC$16
Across 477 payments — averaging $19,015 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$6.7M
- Novartis$549K
- Amgen$522K
- Sanofi US Services Inc.$375K
- Bayer$213K
- Regeneron$206K
- plus $516K from 10 others
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 |
|---|---|---|
| AstraZeneca | 1 | $1,163 |
| Novo Nordisk | 4 | $117 |
| Novartis | 2 | $33 |
| Amgen | 1 | $24 |
| 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
$1,369 in reported general payments places this provider in the 30th 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
- Natia MurvelashviliSpartanburg$2K
- Gauri DhirMyrtle Beach$417K
- Cory WhiteGreenville$413K
- Louis HaenelCharleston$377K
- Vonda CalcuttWalterboro$368K
- Ray VaughtersAiken$321K
- Donald EagertonMyrtle Beach$284K
- Beatrice HullCharleston$214K
- Joseph MathewsSummerville$168K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.