Hai P. Bui, MD
NPI 1316965536ActiveIndividual· Internal Medicine· Lakewood, CO
Internal Medicine (MD) in Lakewood, Colorado, trained at University of Texas Medical School at San Antonio (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,165,942 for 6,665 claims, against $88,198 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $739.92 in all, mostly food and beverage.
Overview
| NPI | 1316965536 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Jun 29, 2020 |
| Certified by provider | Jun 29, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 33410 | CO |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 164 |
|---|---|
| Services billed | 1,395 across 36 procedure codes |
| Paid by Medicare | $88,198 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,665 · 16,124 30-day fills |
|---|---|
| Patients | 374 |
| Total drug cost | $1,165,942 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Intermountain Health Lutheran HospitalWheat Ridge, CO
Industry payments (Open Payments)
- 2025$739.92 · 28 payments from 8 companies
- 2024$773.89 · 32 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $362.87 | 10 |
| Amgen Inc. | $242.56 | 11 |
| Aimmune Therapeutics, Inc. | $35.98 | 2 |
| Gilead Sciences, Inc. | $24.66 | 1 |
| Lilly USA, LLC | $21.95 | 1 |
What the 2025 payments were for
- Food and Beverage$739.92 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Lakewood
- 1033377635
- 1144294638
- 1174605737
- 1265477350
- 1306233713
- 1316007826
- 1336567155
- 1386710424
- 1588891782
- 1659447787
- 1952838039
- 1972755064
All 101 internal medicine physicians in Lakewood · All internal medicine physicians in Colorado