Guillermo D. Marquez, M.D.
NPI 1861454563ActiveIndividual· Surgery· Mission, TX
Surgery (M.D.) with Rgv Surgical Associates, PLLC, practicing in Mission, Texas. Mostly services rather than prescriptions: Medicare paid $18,794 for 70 patients in 2024, with only 20 Part D claims. Smith+nephew, Inc. was the largest of 2 companies reporting payments in 2025, $4,000 in all, mostly grants. Lists Doctors Hosptal at Renaissance and 1 other hospital as hospital affiliations.
Overview
| NPI | 1861454563 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 6, 2006 |
| Last updated in NPPES | Mar 5, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | K1544 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 70 |
|---|---|
| Services billed | 113 across 27 procedure codes |
| Paid by Medicare | $18,794 |
Part D prescriptions in 2024
| Prescriptions (claims) | 20 · 29 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $181.84 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | General Surgery |
Medical group
- Rgv Surgical Associates, PLLCMission, TX · 2 clinicians
Hospital affiliations
- Doctors Hosptal at RenaissanceEdinburg, TX
- Mission Regional Medical CenterMission, TX
Industry payments (Open Payments)
- 2025$4,000 · 2 payments from 2 companies
- 2024$2,692 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Smith+nephew, Inc. | $2,500 | 1 |
| Medtronic, Inc. | $1,500 | 1 |
What the 2025 payments were for
- Grant$4,000 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other general surgeons in Mission
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- 1588016737
- 1164055166
- 1851734552