Tigon Medical LLC
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Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
Centers for Medicare & Medicaid Services, Open Payments
These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.
Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state.
Payment records · PY2025
Date, newest first, then reporting company; values as published by CMS.
General Payments · PY2025 · All recipient types · CMS publication 2026-06-30
36 matching records · $39,645.98 reported total · 0 disputed
Nature of payment: All payment types
Records imported here (UTC).
Download all 36 matching records (CSV)
CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.
Showing records 1–36 of 36.
| Recipient | Paying entity | Amount | Date | Nature of payment | Dispute status | Publication flags | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|---|---|
| DAVID JOHNSON Physician / non-physician practitioner | Tigon Medical LLC | $125.00 | 12/20/2025 | Honoraria | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240390026 | CMS |
| TIMOTHY S JOHNSON Physician / non-physician practitioner | Tigon Medical LLC | $4,000.00 | 12/10/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240375434 | CMS |
| EITAN M KOHAN Physician / non-physician practitioner | Tigon Medical LLC | $919.00 | 12/09/2025 | Travel and Lodging | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240375446 | CMS |
| DENNIS A DEBERNARDIS Physician / non-physician practitioner | Tigon Medical LLC | $604.00 | 12/09/2025 | Travel and Lodging | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240377068 | CMS |
| UMASUTHAN SRIKUMARAN Physician / non-physician practitioner | Tigon Medical LLC | $4,107.89 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398191 | CMS |
| MATTHEW M THOMPSON Physician / non-physician practitioner | Tigon Medical LLC | $300.41 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398236 | CMS |
| JOHN HORNEFF Physician / non-physician practitioner | Tigon Medical LLC | $608.41 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414576 | CMS |
| AARON CHAMBERLAIN Physician / non-physician practitioner | Tigon Medical LLC | $423.91 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240415483 | CMS |
| FOTIOS P TJOUMAKARIS Physician / non-physician practitioner | Tigon Medical LLC | $423.91 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416031 | CMS |
| GREGORY GASBARRO Physician / non-physician practitioner | Tigon Medical LLC | $862.72 | 11/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416054 | CMS |
| TIMOTHY S JOHNSON Physician / non-physician practitioner | Tigon Medical LLC | $500.00 | 08/21/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240374952 | CMS |
| UMASUTHAN SRIKUMARAN Physician / non-physician practitioner | Tigon Medical LLC | $4,340.25 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398178 | CMS |
| MATTHEW M THOMPSON Physician / non-physician practitioner | Tigon Medical LLC | $413.96 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398213 | CMS |
| JOHN HORNEFF Physician / non-physician practitioner | Tigon Medical LLC | $219.80 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414571 | CMS |
| AARON CHAMBERLAIN Physician / non-physician practitioner | Tigon Medical LLC | $316.66 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414607 | CMS |
| FOTIOS P TJOUMAKARIS Physician / non-physician practitioner | Tigon Medical LLC | $316.66 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416026 | CMS |
| GREGORY GASBARRO Physician / non-physician practitioner | Tigon Medical LLC | $835.19 | 08/21/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416050 | CMS |
| MICHAEL S KHAZZAM Physician / non-physician practitioner | Tigon Medical LLC | $2,830.97 | 08/20/2025 | Honoraria | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240374933 | CMS |
| PATRICK TATE Physician / non-physician practitioner | Tigon Medical LLC | $442.00 | 08/20/2025 | Travel and Lodging | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240375389 | CMS |
| DAVID A KUMMERFELD Physician / non-physician practitioner | Tigon Medical LLC | $2,794.56 | 05/23/2025 | Honoraria | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240374925 | CMS |
| LOUIS GRANDIZIO Physician / non-physician practitioner | Tigon Medical LLC | $1,818.40 | 05/23/2025 | Honoraria | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240374939 | CMS |
| LEWIS L SHI Physician / non-physician practitioner | Tigon Medical LLC | $186.18 | 04/21/2025 | Travel and Lodging | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240359227 | CMS |
| MATTHEW M THOMPSON Physician / non-physician practitioner | Tigon Medical LLC | $574.15 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398208 | CMS |
| UMASUTHAN SRIKUMARAN Physician / non-physician practitioner | Tigon Medical LLC | $4,353.75 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414558 | CMS |
| JOHN HORNEFF Physician / non-physician practitioner | Tigon Medical LLC | $267.35 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414569 | CMS |
| AARON CHAMBERLAIN Physician / non-physician practitioner | Tigon Medical LLC | $147.40 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414601 | CMS |
| FOTIOS P TJOUMAKARIS Physician / non-physician practitioner | Tigon Medical LLC | $147.40 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240415504 | CMS |
| GREGORY GASBARRO Physician / non-physician practitioner | Tigon Medical LLC | $613.82 | 04/20/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416044 | CMS |
| VAHID ENTEZARI Physician / non-physician practitioner | Tigon Medical LLC | $500.00 | 02/12/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240365139 | CMS |
| UMASUTHAN SRIKUMARAN Physician / non-physician practitioner | Tigon Medical LLC | $3,780.86 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398172 | CMS |
| MATTHEW M THOMPSON Physician / non-physician practitioner | Tigon Medical LLC | $510.82 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240398198 | CMS |
| JOHN HORNEFF Physician / non-physician practitioner | Tigon Medical LLC | $291.71 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414564 | CMS |
| AARON CHAMBERLAIN Physician / non-physician practitioner | Tigon Medical LLC | $207.81 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240414592 | CMS |
| FOTIOS P TJOUMAKARIS Physician / non-physician practitioner | Tigon Medical LLC | $207.81 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240415500 | CMS |
| GREGORY GASBARRO Physician / non-physician practitioner | Tigon Medical LLC | $369.27 | 01/22/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240416041 | CMS |
| LEWIS L SHI Physician / non-physician practitioner | Tigon Medical LLC | $283.95 | 01/08/2025 | Travel and Lodging | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1240359217 | CMS |
Practitioner overview · all loaded program years
43 providers listed 120 records General Payments
General Payments to practitioners — all loaded program years
- Category: General Payments
- Program years: 2021, 2022, 2023, 2024, 2025
- Record count: 120
- Providers listed: 43
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
Coverage: program years 2019–2025, General Payments only, reported to physicians and non-physician practitioners. Payments to teaching hospitals are not included in these practitioner figures. Each figure is labeled with its category and program year; categories are never combined.
Practitioner payments by program year
| Program year | Reported | Records | Providers | Detail |
|---|---|---|---|---|
| PY2021 | $14,521.45 | 8 | 8 | This company in PY2021 → |
| PY2022 | $18,909.06 | 6 | 6 | This company in PY2022 → |
| PY2023 | $46,173.01 | 34 | 26 | This company in PY2023 → |
| PY2024 | $32,557.74 | 36 | 17 | This company in PY2024 → |
| PY2025 | $39,645.98 | 36 | 16 | This company in PY2025 → |
By recipient specialty (6)
Sorted by name; identical names by identifier.
Allopathic & Osteopathic Physicians 4 specialties 41 providers
Podiatric Medicine & Surgery Service Providers 2 specialties 2 providers
Providers listed (43)
Sorted by name; identical names by identifier.
| Provider | Specialty | State | Records reported by this company |
|---|---|---|---|
| AARON CHAMBERLAIN | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Orthopaedic Surgery of the Spine | UT | 10 |
| ABDULAZIZ AHMED | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | MD | 1 |
| AUSTIN MACFARLAND LOONEY | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | GA | 1 |
| BRANDON A ROMERO | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | NV | 1 |
| BRET D BEAVERS | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 1 |
| BRIAN E ETIER | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | LA | 1 |
| BRIAN WILLIAM HILL | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | FL | 1 |
| CHRISTOS PHOTOPOULOS | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | CA | 1 |
| DANIEL PEREZ | Podiatric Medicine & Surgery Service Providers|Podiatrist | PA | 2 |
| DAVID A KUMMERFELD | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 2 |
| DAVID JOHNSON | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | DC | 1 |
| DENNIS A DEBERNARDIS | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | NJ | 3 |
| EITAN M KOHAN | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | NJ | 1 |
| FOTIOS P TJOUMAKARIS | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | NJ | 8 |
| GEORGE RUSSELL HUFFMAN | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | FL | 1 |
| GREGORY GASBARRO | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MD | 13 |
| HOLT S CUTLER | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 1 |
| JACOB M KIRSCH | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MA | 3 |
| JASHAN A VALJEE | Podiatric Medicine & Surgery Service Providers|Podiatrist|Foot & Ankle Surgery | MD | 1 |
| JOHN HORNEFF | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | PA | 12 |
| JOSHUA HARDY LAMB | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | SC | 1 |
| KEITH WATSON | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 2 |
| LEWIS L SHI | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | IL | 2 |
| LOUIS GRANDIZIO | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | PA | 1 |
| MATTHEW M THOMPSON | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | MD | 10 |
| MICHAEL S KHAZZAM | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 1 |
| MICHAEL SCHWARTZ | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | TX | 3 |
| MICHAEL W CANTRELL | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | AL | 1 |
| MICHEL ARCAND | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | RI | 2 |
| NIGEL HSU | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MD | 1 |
| OMAR HUSSAMY | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | FL | 2 |
| PATRICK TATE | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | OH | 1 |
| PAUL SALVATORE RAGUSA | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | NY | 1 |
| STEPHAN GEOFFREY PILL | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | SC | 3 |
| STEPHANIE J MUH | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MI | 1 |
| THERESA PAK | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | AZ | 2 |
| TIMOTHY S JOHNSON | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | VA | 2 |
| UMASUTHAN SRIKUMARAN | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MD | 11 |
| VAHID ENTEZARI | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | PA | 3 |
| WALTER CHAD HEMBREE | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Foot and Ankle Surgery | MD | 2 |
| WALTER G STANWOOD | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MA | 1 |
| WILLIAM RUEBEN AIBINDER | Allopathic & Osteopathic Physicians|Orthopaedic Surgery | MI | 1 |
| ZACHARY RICHARDS ZIMMER | Allopathic & Osteopathic Physicians|Orthopaedic Surgery|Sports Medicine | DC | 1 |