Mara Isser Sax, DO
Physical Medicine & Rehabilitation · Denver, CONPI 1194776898
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.5% of the total across 127 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 18 manufacturers reported payments, led by AbbVie at 58.2% of the total.
Across 127 payments — averaging $22.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- Teva Pharmaceuticals USA, Inc.$167
- Merz Pharmaceuticals, LLC$151
- Abbott$140
- SPR Therapeutics, Inc$119
- Argenx US, Inc.$95
- plus $497 from 12 others
What the payments were for
- Food & beverage$2,783100%
- Education$140%
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) | 85 | $1,627 |
| Teva Pharmaceuticals USA, Inc. | 6 | $167 |
| Merz Pharmaceuticals, LLC | 6 | $151 |
| Abbott | 1 | $140 |
| SPR Therapeutics, Inc | 2 | $119 |
| Argenx US, Inc. | 4 | $95 |
| Axsome Therapeutics, Inc. | 4 | $89 |
| Biohaven Pharmaceuticals, Inc. | 4 | $89 |
| UCB, Inc. | 2 | $70 |
| Tanabe Pharma America, Inc. | 2 | $46 |
| Averitas Pharma Inc. | 2 | $45 |
| Lilly USA, LLC | 2 | $37 |
| Bioventus LLC | 2 | $31 |
| Vertex | 1 | $20 |
| Johnson & Johnson | 1 | $20 |
| Biogen | 1 | $18 |
| Scilex Pharmaceuticals Inc. | 1 | $16 |
| Idorsia Pharmaceuticals US Inc | 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.
How this compares
$2,797 in reported general payments places this provider in the 85th percentile of 199 physical medicine & rehabilitation providers in Colorado.
See all physical medicine & rehabilitation providers in Colorado →
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 |
|---|---|---|
| Gabapentin | 226 | $4,361 |
| Pregabalin | 70 | $2,392 |
| Lidocaine | 18 | $2,089 |
| Tizanidine Hcl | 47 | $463 |
| Methocarbamol | 24 | $380 |
| Tramadol Hcl | 63 | $252 |
| Meloxicam | 56 | $248 |
| Methylprednisolone | 27 | $205 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 12 | $107 |
Paid to pharmacies, not to this prescriber.
Other physical medicine & rehabilitation in Denver
- Gin-Ming HsuDenver$8K
- Yusuke WakeshimaDenver$5K
- Usama GhaziDenver$2K
- Yani ZinisDenver$713
- Drew TrainorGreenwood Village$320K
- William ScelzaEnglewood$16K
- Aakash ThakralGreeley$14K
- Alan WeintraubEnglewood$10K
- Ryan FlowersGreeley$10K
- Kristina BarberParker$9K
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.