Calvin Darnell Lyons Jr., M.D.
NPI 1811149404ActiveIndividual· Colon & Rectal Surgery· Las Vegas, NV
Colon & Rectal Surgery (M.D.) in Las Vegas, Nevada, trained at University of Texas Southwestern Medical School at Dallas (class of 2008). In 2024 Medicare paid $82,755 for 193 patients, and Part D covered 97 of their prescriptions, 78% of them generic. Braintree Laboratories, Inc. was the largest of 14 companies reporting payments in 2025, $664.77 in all, mostly food and beverage.
Overview
| NPI | 1811149404 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 15, 2008 |
| Last updated in NPPES | Jan 6, 2025 |
| Certified by provider | Jan 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | 17624 | NV |
| Surgery | 208600000X | 17624 | NV |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Colorectal Surgery (Proctology) (NV); Practitioner - General Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 193 |
|---|---|
| Services billed | 646 across 47 procedure codes |
| Paid by Medicare | $82,755 |
Part D prescriptions in 2024
| Prescriptions (claims) | 97 · 97 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $3,030 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Colorectal Surgery (Proctology) |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Las Vegas Urology LLPHenderson, NV · 50 clinicians
Hospital affiliations
- Saint Rose Dominican Hospitals - Siena CampusHenderson, NV
- Southern Hills Hospital and Medical CenterLas Vegas, NV
- Summerlin Hospital Medical CenterLas Vegas, NV
- West Henderson HospitalHenderson, NV
Industry payments (Open Payments)
- 2025$664.77 · 20 payments from 14 companies
- 2024$337.68 · 8 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Braintree Laboratories, Inc. | $163.62 | 2 |
| Abbvie Inc. | $119.14 | 1 |
| Dendreon Pharmaceuticals LLC | $72.45 | 3 |
| Janssen Biotech, Inc. | $48.81 | 2 |
| Sumitomo Pharma America, Inc. | $35.84 | 2 |
What the 2025 payments were for
- Food and Beverage$501.15 · 18 payments
- Gift$163.62 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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