Nathaniel L. Barnes, M.D.
NPI 1033119516ActiveIndividual· Urology· Webster, TX
Urology (M.D.) in Webster, Texas, trained at Harvard Medical School (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $722,852 for 1,612 claims, against $102,794 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 11 companies reporting payments in 2025, $47,120 in all, mostly speaking and faculty fees.
Overview
| NPI | 1033119516 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 27, 2005 |
| Last updated in NPPES | Aug 13, 2026 |
| Certified by provider | Aug 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | K5799 | TX |
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 - Urology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 268 |
|---|---|
| Services billed | 10,324 across 55 procedure codes |
| Paid by Medicare | $102,794 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,612 · 3,481 30-day fills |
|---|---|
| Patients | 342 |
| Total drug cost | $722,852 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Memorial Hermann Medical GroupSugar Land, TX · 762 clinicians
Hospital affiliations
- Memorial Hermann Hospital SystemHouston, TX
- Memorial Hermann Houston Physicians HospitalWebster, TX
Industry payments (Open Payments)
- 2025$47,120 · 81 payments from 11 companies
- 2024$95,729 · 146 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $25,591 | 43 |
| Astellas Pharma US Inc | $20,904 | 22 |
| Agiliti Surgical, Inc. | $322.77 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $91.97 | 3 |
| Abbvie Inc. | $60.67 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$39,880 · 12 payments
- Travel and Lodging$5,490 · 34 payments
- Food and Beverage$1,751 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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