David Gu, D.O.
NPI 1225107006ActiveIndividual· Internal Medicine· Alhambra, CA
Internal Medicine (D.O.) in Alhambra, California, trained at College of Osteo Med of the Pacific at Pomona (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $2,591,720 for 23,435 claims, against $189,923 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 14 companies reporting payments in 2025, $743.08 in all, mostly food and beverage.
Overview
| NPI | 1225107006 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Nov 7, 2006 |
| Last updated in NPPES | May 2, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A6851 | CA |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 334 |
|---|---|
| Services billed | 3,050 across 51 procedure codes |
| Paid by Medicare | $189,923 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23,435 · 34,635 30-day fills |
|---|---|
| Patients | 666 |
| Total drug cost | $2,591,720 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Osteopathic Manipulative Medicine |
Medical group
- David Gu, DO, A Professional CorporationAlhambra, CA · 2 clinicians
Other facilities
- Happy Home Health ServicesHome health agency · Arcadia, CA
- Eastland Subacute and Rehabilitation CenterNursing home · El Monte, CA
- Santa Anita Convalescent HospitalNursing home · Temple City, CA
Industry payments (Open Payments)
- 2025$743.08 · 28 payments from 14 companies
- 2024$5,292 · 57 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $154.12 | 5 |
| Astrazeneca Pharmaceuticals LP | $153.75 | 7 |
| Abiomed | $99.98 | 1 |
| Dexcom, Inc. | $65.36 | 3 |
| Pfizer Inc. | $58.19 | 3 |
What the 2025 payments were for
- Food and Beverage$743.08 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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