Shiun T. Ker, M.D.
NPI 1669554887ActiveIndividual· Surgery· Monterey Park, CA
Surgery (M.D.) in Monterey Park, California, licensed in CA, with an NPI issued in October 2006. 261 Medicare patients in 2024, $135,603 paid; nearly all of their 296 Part D prescriptions were generic (95%). Phathom Pharmaceuticals, Inc. reported $140.00 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1669554887 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 19, 2006 |
| Last updated in NPPES | Sep 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A43001 | CA |
| Colon & Rectal Surgery | 208C00000X | A43001 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Colorectal Surgery (Proctology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 261 |
|---|---|
| Services billed | 1,079 across 20 procedure codes |
| Paid by Medicare | $135,603 |
Part D prescriptions in 2024
| Prescriptions (claims) | 296 · 317 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $7,464 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1974 |
|---|---|
| Medicare specialty | Colorectal Surgery (Proctology) |
| Secondary specialties | General Surgery |
Industry payments (Open Payments)
- 2025$140.00 · 1 payment from 1 company
- 2024$186.95 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $140.00 | 1 |
What the 2025 payments were for
- Food and Beverage$140.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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