Qi Quan Leong, M.D.
Internal Medicine, Infectious Disease (M.D.) with UCSF Medical Group Business Services and 1 other group, practicing in San Francisco, California. Their prescriptions cost Medicare Part D more than their services did: $238,371 for 165 claims, against $47,524 paid for services in 2024. Viiv Healthcare Company was the largest of 4 companies reporting payments in 2025, $556.13 in all, mostly food and beverage. Lists UCSF Health Saint Francis Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1457761082 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 5, 2014 |
| Last updated in NPPES | Sep 8, 2023 |
| Certified by provider | Sep 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A184705 | CA |
| Internal Medicine, Infectious Disease | 207RI0200X | MD466499 | PA |
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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 145 |
|---|---|
| Services billed | 568 across 10 procedure codes |
| Paid by Medicare | $47,524 |
Part D prescriptions in 2024
| Prescriptions (claims) | 165 · 194 30-day fills |
|---|---|
| Patients | 31 |
| Total drug cost | $238,371 |
| Generic share | 57% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical groups
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
- Regents of the University of CaliforniaSan Francisco, CA · 732 clinicians
Hospital affiliations
- UCSF Health Saint Francis HospitalSan Francisco, CA
- UCSF Health St. Mary's HospitalSan Francisco, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$556.13 · 6 payments from 4 companies
- 2024$197.69 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $158.76 | 3 |
| Janssen Biotech, Inc. | $144.45 | 1 |
| Abbvie Inc. | $132.98 | 1 |
| Gilead Sciences, Inc. | $119.94 | 1 |
What the 2025 payments were for
- Food and Beverage$556.13 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 114 infectious disease specialists in San Francisco · All infectious disease specialists in California