Jason S. Paek, M.D.
NPI 1770679631ActiveIndividual· Internal Medicine· Rowland Heights, CA
Internal Medicine (M.D.) in Rowland Heights, California, trained at Medical College of Wisconsin (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $4,274,859 for 33,860 claims, against $136,190 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 17 companies reporting payments in 2025, $1,807 in all, mostly food and beverage.
Overview
| NPI | 1770679631 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 5, 2006 |
| Last updated in NPPES | Jan 9, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G58208 | 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 | 262 |
|---|---|
| Services billed | 2,281 across 32 procedure codes |
| Paid by Medicare | $136,190 |
Part D prescriptions in 2024
| Prescriptions (claims) | 33,860 · 66,684 30-day fills |
|---|---|
| Patients | 1,717 |
| Total drug cost | $4,274,859 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Other facilities
- Ace Home Health, Inc.Home health agency · Los Angeles, CA
- Western Home Care, IncHome health agency · Buena Park, CA
Industry payments (Open Payments)
- 2025$1,807 · 91 payments from 17 companies
- 2024$1,630 · 81 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $396.09 | 22 |
| Abbvie Inc. | $241.45 | 15 |
| Glaxosmithkline, LLC. | $218.27 | 10 |
| Amgen Inc. | $174.96 | 10 |
| Bayer Healthcare Pharmaceuticals Inc. | $127.09 | 6 |
What the 2025 payments were for
- Food and Beverage$1,807 · 91 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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