Robert James Leach, MD
NPI 1114910411ActiveIndividual· Internal Medicine, Nephrology· Texarkana, TX
Internal Medicine, Nephrology (MD) in Texarkana, Texas, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 1995). In 2024 Medicare paid $296,944 for 593 patients, and Part D covered 2,049 of their prescriptions, 78% of them generic. Calliditas Therapeutics US Inc. was the largest of 11 companies reporting payments in 2025, $825.31 in all, mostly food and beverage.
Overview
| NPI | 1114910411 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 23, 2005 |
| Last updated in NPPES | Sep 16, 2026 |
| Certified by provider | Sep 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | R1810 | TX |
| Hospitalist | 208M00000X | 6419970-1205 | UT |
| Internal Medicine, Nephrology | 207RN0300X | 42232 | CO |
| Internal Medicine, Nephrology | 207RN0300X | 6419970-1205 | UT |
| Internal Medicine, Nephrology | 207RN0300X | M9032 | ID |
| Internal Medicine, Nephrology | 207RN0300X | 3520 | OK |
| Internal Medicine, Nephrology | 207RN0300X | E11089 | AR |
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 - Nephrology (AR); Practitioner - Nephrology (OK); Practitioner - Nephrology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 593 |
|---|---|
| Services billed | 7,346 across 78 procedure codes |
| Paid by Medicare | $296,944 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,049 · 3,323 30-day fills |
|---|---|
| Patients | 359 |
| Total drug cost | $350,412 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | University of Kansas School of Med (Kc/Wich/Sal) |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Secondary specialties | Hospitalist |
Medical groups
- Christus Trinity Clinic TexasTyler, TX · 1,540 clinicians
- Collom and Carney Clinic AssociationTexarkana, TX · 51 clinicians
Hospital affiliations
- Christus St Michael Health SystemTexarkana, TX
- McCurtain Memorial HospitalIdabel, OK
Other facilities
- Davita Idabel DialysisDialysis facility · Idabel, OK
- Davita Miller County DialysisDialysis facility · Texarkana, AR
- Davita Northeast Texas DialysisDialysis facility · Atlanta, TX
- Davita Texarkana Regional DialysisDialysis facility · Texarkana, TX
- Davita Twin CitiesDialysis facility · Texarkana, AR
Industry payments (Open Payments)
- 2025$825.31 · 36 payments from 11 companies
- 2024$781.60 · 37 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $153.90 | 6 |
| Ardelyx, Inc. | $142.19 | 5 |
| Bayer Healthcare Pharmaceuticals Inc. | $99.81 | 4 |
| Astrazeneca Pharmaceuticals LP | $99.69 | 6 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $82.90 | 4 |
What the 2025 payments were for
- Food and Beverage$824.92 · 35 payments
- Education$0.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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