Gary S. Mak, MD
NPI 1679681472ActiveIndividual· Internal Medicine· Bellevue, WA
Internal Medicine (MD) in Bellevue, Washington, trained at University of California, San Diego School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $166,799 for 1,853 claims, against $4,540 paid for services in 2024. Abbott Laboratories reported $1,470 in payments in 2025, mostly travel and lodging.
Overview
| NPI | 1679681472 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Apr 27, 2021 |
| Certified by provider | Apr 27, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD00046737 | WA |
| Internal Medicine | 207R00000X | A97472 | CA |
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 - Cardiovascular Disease (Cardiology) (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 58 |
|---|---|
| Services billed | 201 across 37 procedure codes |
| Paid by Medicare | $4,540 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,853 · 4,902 30-day fills |
|---|---|
| Patients | 325 |
| Total drug cost | $166,799 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Kaiser Foundation Health Plan of WashingtonBellevue, WA · 1,526 clinicians
Hospital affiliation
- Overlake Hospital Medical Center & ClinicsBellevue, WA
Industry payments (Open Payments)
- 2025$1,470 · 12 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $1,470 | 12 |
What the 2025 payments were for
- Travel and Lodging$1,124 · 5 payments
- Food and Beverage$345.94 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 135 internal medicine physicians in Bellevue · All internal medicine physicians in Washington