John Marks, MD
Colon & Rectal Surgery · Wynnewood, PANPI 1346212594
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (54.5%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 54 manufacturers reported payments, led by Intuitive Surgical at 28.7% of the total. 2025 is the largest year on record at $44,911, 2.0 times the $22,045 reported in 2019. Among colon & rectal surgery clinicians in PA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 237 payments — averaging $652.17 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$44K
- Vascular Technology, Inc.$35K
- Stryker$30K
- Arthrex$24K
- Medtronic$14K
- Covidien LP$3K
- plus $5K from 48 others
Across 2 payments — averaging $161,074 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.
- Olympus America Inc.$322K
What the payments were for
- Consulting fees$84,16554%
- Speaking & faculty fees$43,65028%
- Travel & lodging$9,4216%
- Food & beverage$9,3046%
- Education$8,0005%
- Gifts$240%
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.
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$39,052
- SPY-PHI SYSTEM$16,739
- 1788$8,461
- 1688$7,308
- DA VINCI SP$4,000
- VersaOne$2,650
- Sonicision$2,400
- Signia$1,910
- GELPOINT VPATH$1,000
- Mira!$465
- ARTHREX$414
- LigaSure$368
- INTERSTIM$210
- OviTex 2S$173
- 1688 HD 3 CHIP CAMERA$158
- SPY TECHNOLOGY$158
- EEA$154
- BIO-A Tissue Reinforcement$144
- PHASIX$139
- Echelon Flex$127
How this compares
$154,564 in reported general payments places this provider in the 95th percentile of 108 colon & rectal surgery providers in Pennsylvania.
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 |
|---|---|---|
| Doxycycline Hyclate | 77 | $301 |
| Dicyclomine Hcl | 14 | $216 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in Wynnewood
- Henry SchoonyoungWynnewood$11K
- Robert NooneWynnewood$3K
- Bogdan ProtyniakWilkes-Barre$429K
- Joshua BleierPhiladelphia$86K
- Richard FortunatoPittsburgh$80K
- Najjia MahmoudPhiladelphia$63K
- James McCormickMonroeville$55K
- Juan PoggioPhiladelphia$49K
- Christopher BuzasDanville$25K
- David ZebleyAbington$24K
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.