Schuman Tam, M.D.
NPI 1184674400ActiveIndividual· Specialist· San Francisco, CA
Specialist (M.D.) in San Francisco, California, trained at Medical College of Wisconsin (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $1,364,693 for 2,596 claims, against $210,172 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 25 companies reporting payments in 2025, $3,036 in all, mostly food and beverage.
Overview
| NPI | 1184674400 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 10, 2006 |
| Last updated in NPPES | Oct 10, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | G063486 | 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 - Allergy/Immunology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 500 |
|---|---|
| Services billed | 12,848 across 27 procedure codes |
| Paid by Medicare | $210,172 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,596 · 4,142 30-day fills |
|---|---|
| Patients | 398 |
| Total drug cost | $1,364,693 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Allergy/Immunology |
Hospital affiliations
- Marinhealth Medical CenterGreenbrae, CA
- UCSF Health St. Mary's HospitalSan Francisco, CA
Industry payments (Open Payments)
- 2025$3,036 · 111 payments from 25 companies
- 2024$3,090 · 114 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $620.42 | 23 |
| Glaxosmithkline, LLC. | $577.36 | 21 |
| Novartis Pharmaceuticals Corporation | $214.51 | 9 |
| Genzyme Corporation | $186.80 | 8 |
| Takeda Pharmaceuticals U.S.A., Inc. | $178.40 | 7 |
What the 2025 payments were for
- Food and Beverage$2,896 · 108 payments
- Education$72.00 · 1 payment
- Consulting Fee$67.48 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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