Ewan Douglas Johnson, MD, PHD
NPI 1043521313ActiveIndividual· Internal Medicine· Tomball, TX
Internal Medicine (MD, PHD) in Tomball, Texas, trained at University of Texas Medical Branch at Galveston (class of 2004). 190 Medicare patients in 2024, $22,528 paid; nearly all of their 274 Part D prescriptions were generic (94%). Abbvie Inc. reported $15.04 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1043521313 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Jul 1, 2010 |
| Last updated in NPPES | Jun 11, 2021 |
| Certified by provider | May 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | N8018 | TX |
| Emergency Medicine | 207P00000X | N8018 | TX |
| Internal Medicine, Medical Oncology | 207RX0202X | N8018 | 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 - Internal Medicine (AZ); Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 190 |
|---|---|
| Services billed | 260 across 17 procedure codes |
| Paid by Medicare | $22,528 |
Part D prescriptions in 2024
| Prescriptions (claims) | 274 · 357 30-day fills |
|---|---|
| Patients | 167 |
| Total drug cost | $4,616 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
Medical group
- Concord Medical Group of Texas PLLCBreckenridge, TX · 321 clinicians
Hospital affiliations
- Columbus Community HospitalColumbus, TX
- Reeves Regional HealthPecos, TX
Industry payments (Open Payments)
- 2025$15.04 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $15.04 | 1 |
What the 2025 payments were for
- Food and Beverage$15.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 internal medicine physicians in Tomball · All internal medicine physicians in Texas