Shawn Kent Hassler, M.D.
NPI 1427122928ActiveIndividual· Internal Medicine, Infectious Disease· San Francisco, CA
Internal Medicine, Infectious Disease (M.D.) in San Francisco, California, trained at University of Miami, Lm Miller School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $8,657,589 for 8,492 claims, against $87,495 paid for services in 2024. Gilead Sciences, Inc. was the largest of 18 companies reporting payments in 2025, $64,622 in all, mostly speaking and faculty fees.
Overview
| NPI | 1427122928 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 17, 2006 |
| Last updated in NPPES | Apr 9, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A062683 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 193 |
|---|---|
| Services billed | 975 across 24 procedure codes |
| Paid by Medicare | $87,495 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,492 · 13,854 30-day fills |
|---|---|
| Patients | 326 |
| Total drug cost | $8,657,589 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | University of Miami, Lm Miller School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- California Pacific Medical Ctr-Davies Campus HospSan Francisco, CA
- UCSF Medical CenterSan Francisco, CA
Other facilities
- Homeassist Home Health ServicesHome health agency · Daly City, CA
Industry payments (Open Payments)
- 2025$64,622 · 246 payments from 18 companies
- 2024$64,996 · 213 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $34,833 | 71 |
| Viiv Healthcare Company | $10,538 | 56 |
| Napo Pharmaceuticals Inc | $8,254 | 7 |
| Theratechnologies Inc. | $5,139 | 17 |
| Merck Sharp & Dohme LLC | $3,775 | 15 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$36,778 · 16 payments
- Compensation for serving as faculty or as a speaker for a medical education program$8,031 · 2 payments
- Food and Beverage$6,349 · 211 payments
- Honoraria$4,600 · 3 payments
- Consulting Fee$4,560 · 1 payment
- Travel and Lodging$4,304 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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