Michael Keller, MD
Colon & Rectal Surgery · San Antonio, TXNPI 1659572824
Payments from drug & device makers
What this record shows
This record is dominated by education: $33,000 of the $50,312 with a category attached, or 65.6%. Intuitive Surgical accounts for 79.6% of it on its own, with 25 other manufacturers making up the rest. Reporting peaked in 2019 at $38,192 and has fallen 96.5% since, to $1,340 in 2025.
Across 132 payments — averaging $381.15 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$40K
- Biom'up SA$6K
- TELA Bio, Inc.$2K
- Myriad Genetic Laboratories, Inc.$424
- Biom'up France SAS$387
- Johnson & Johnson$278
- plus $1K from 20 others
Across 7 payments — averaging $5333.00 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.
- United Therapeutics Corporation$37K
What the payments were for
- Consulting fees$3,5007%
- Speaking & faculty fees$3001%
- Travel & lodging$6,32513%
- Food & beverage$7,17214%
- Education$33,00066%
- Gifts$150%
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 |
|---|---|---|
| Intuitive Surgical | 59 | $40,055 |
| Biom'up SA | 14 | $6,205 |
| TELA Bio, Inc. | 18 | $1,738 |
| Myriad Genetic Laboratories, Inc. | 4 | $424 |
| Biom'up France SAS | 3 | $387 |
| Johnson & Johnson(2 entities) | 3 | $278 |
| Medtronic | 2 | $265 |
| AbbVie(2 entities) | 6 | $224 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $144 |
| Baxter Healthcare | 1 | $122 |
| Integra Lifesciences Corporation | 2 | $71 |
| Vertex | 1 | $60 |
| Biotissue Holdings Inc. | 3 | $51 |
| Kerecis Limited | 2 | $49 |
| Davol Inc. | 1 | $36 |
| Aroa Biosurgery Incorporated | 1 | $26 |
| Innovation Technologies Inc | 1 | $22 |
| Shire North American Group Inc | 1 | $21 |
| THD America, Inc. | 1 | $20 |
| Smith+Nephew | 1 | $19 |
| Acera Surgical, Inc. | 1 | $19 |
| Pharmacyclics LLC, An Abbvie Company | 1 | $18 |
| Sobi, Inc | 1 | $18 |
| Tetraphase Pharmaceuticals, Inc. | 1 | $16 |
| Ferring Pharmaceuticals Inc. | 1 | $14 |
| Acell, Inc. | 1 | $14 |
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.
- Da Vinci Surgical System$39,378
- HEMOBLAST$6,077
- OviTex Reinforced Bioscaffold With Permanent Polymer (OviTex)$1,268
- HemoBlast Bellows$387
- INTERSTIM$265
- PreciseTumor$217
- myRisk$207
- DARZALEX$125
- STRATTICE RECONSTRUCTIVE TISSUE MATRIX BPS$122
- FLOSEAL$122
- ECHELON ENDOPATH$117
- VISTASEAL$117
- Enseal$117
- Harmonic$117
- EXKIVITY$116
- OviTex 2S$102
How this compares
$50,312 in reported general payments places this provider in the 85th percentile of 200 colon & rectal surgery 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 |
|---|---|---|
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 77 | $4,906 |
| Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine | 16 | $370 |
| Neomycin Sulfate | 49 | $279 |
| Acetaminophen-CodeineAcetaminophen With Codeine | 27 | $176 |
| Metronidazole | 61 | $164 |
| Tramadol Hcl | 13 | $31 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in San Antonio
- Christopher de JesusSan Antonio$201K
- William LewisSan Antonio$85K
- Jaime MayoralSan Antonio$84K
- Maria Martinez UgarteSan Antonio$47K
- James PrietoSan Antonio$16K
- Rolando SaenzSan Antonio$15K
- Mario AlcantaraSan Antonio$14K
- Thiru LakshmanAustin$756K
- Diego Marines CopadoHouston$462K
- Bidhan DasSugar Land$350K
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.