John Clifton, MD
Pain Medicine · San Antonio, TXNPI 1336117381
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 6 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 Vertex at 45.8% of the total. 2025 is the largest year on record at $64, 3.2 times the $20 reported in 2021. That places this record below the midpoint for pain medicine clinicians in TX, where the typical reported total is $3,132.
Across 6 payments — averaging $23.23 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Vertex$64
- Alkermes, Inc.$21
- Alk-abello, Inc$20
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$19
- Boston Scientific$16
What the payments were for
- Food & beverage$139100%
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 |
|---|---|---|
| Vertex | 2 | $64 |
| Alkermes, Inc. | 1 | $21 |
| Alk-abello, Inc | 1 | $20 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $19 |
| Boston Scientific | 1 | $16 |
How this compares
$139 in reported general payments places this provider in the 10th percentile of 583 pain medicine providers in Texas.
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 |
|---|---|---|
| OxycontinOxycodone Hcl | 37 | $11,610 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 868 | $8,623 |
| Oxycodone Hcl | 205 | $1,589 |
| Morphine Sulfate ErMorphine Sulfate | 70 | $921 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 106 | $913 |
| Methadone Hcl | 40 | $251 |
| Hydromorphone Hcl | 22 | $224 |
| Methocarbamol | 11 | $215 |
| Tramadol Hcl | 31 | $153 |
| Morphine Sulfate | 11 | $139 |
| Gabapentin | 14 | $96 |
| Clonazepam | 11 | $11 |
Paid to pharmacies, not to this prescriber.
Other pain medicine in San Antonio
- Ellen LinSan Antonio$118K
- Prabhdeep GrewalSan Antonio$48K
- Roberto DiazSan Antonio$37K
- Ricardo AlvaradoSan Antonio$23K
- Charles BryantSan Antonio$23K
- Melissa MurphyGrapevine$653K
- Shiraz YazdaniLubbock$514K
- Aaron CalodneyTyler$296K
- Candice BurnetteSugar Land$265K
- Ashley Bailey-ClassenFort Worth$244K
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.