Katherine Marie Shaffer, M.D.
NPI 1336405695ActiveIndividual· Student in an Organized Health Care Education/Training Program· San Diego, CA
Student in an Organized Health Care Education/Training Program (M.D.) in San Diego, California, trained at Georgetown University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $161,290 for 893 claims, against $22,542 paid for services in 2024. Pfizer Inc. reported $47.98 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1336405695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 11, 2012 |
| Last updated in NPPES | Oct 25, 2024 |
| Certified by provider | Dec 23, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Student in an Organized Health Care Education/Training Program Primary | 390200000X | — | — |
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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 211 across 20 procedure codes |
| Paid by Medicare | $22,542 |
Part D prescriptions in 2024
| Prescriptions (claims) | 893 · 1,078 30-day fills |
|---|---|
| Patients | 316 |
| Total drug cost | $161,290 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - San DiegoSan Diego, CA
Industry payments (Open Payments)
- 2025$47.98 · 3 payments from 1 company
- 2024$185.38 · 9 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $47.98 | 3 |
What the 2025 payments were for
- Food and Beverage$47.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 2,084 Student in an Organized Health Care Education/Training Program providers in San Diego · All Student in an Organized Health Care Education/Training Program providers in California