Moo J. Chung, M.D.
NPI 1306846977ActiveIndividual· Internal Medicine· Katy, TX
Internal Medicine (M.D.) in Katy, Texas, trained at University of Oklahoma College of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $477,307 for 6,744 claims, against $158,074 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 19 companies reporting payments in 2025, $1,864 in all, mostly food and beverage.
Overview
| NPI | 1306846977 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 26, 2005 |
| Last updated in NPPES | Dec 17, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | L4888 | 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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 343 |
|---|---|
| Services billed | 2,586 across 52 procedure codes |
| Paid by Medicare | $158,074 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,744 · 16,494 30-day fills |
|---|---|
| Patients | 549 |
| Total drug cost | $477,307 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Katy Internal Medicine Associates, L.L.PKaty, TX · 8 clinicians
Hospital affiliations
- Houston Methodist West HospitalHouston, TX
- Memorial Hermann Katy HospitalKaty, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Other facilities
- Elite Home HealthHome health agency · Houston, TX
- Accredited Hospices of AmericaHospice · Katy, TX
- Memorial Hermann Rehabilitation Hospital KatyInpatient rehabilitation facility · Katy, TX
Industry payments (Open Payments)
- 2025$1,864 · 101 payments from 19 companies
- 2024$1,581 · 89 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $255.21 | 16 |
| Corcept Therapeutics | $228.94 | 6 |
| Lilly USA, LLC | $219.10 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $171.85 | 11 |
| Amgen Inc. | $155.79 | 10 |
What the 2025 payments were for
- Food and Beverage$1,864 · 101 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 104 internal medicine physicians in Katy · All internal medicine physicians in Texas