Michael Alexander Spinner, M.D.
NPI 1639589567ActiveIndividual· Internal Medicine, Medical Oncology· Stanford, CA
Internal Medicine, Medical Oncology (M.D.) in Stanford, California, trained at Vanderbilt University School of Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $2,601,158 for 535 claims, against $61,998 paid for services in 2024. Pfizer Inc. was the largest of 6 companies reporting payments in 2025, $6,208 in all, mostly consulting fees.
Overview
| NPI | 1639589567 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 30, 2014 |
| Last updated in NPPES | Jul 9, 2020 |
| Certified by provider | Jul 9, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A140983 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 172 |
|---|---|
| Services billed | 980 across 23 procedure codes |
| Paid by Medicare | $61,998 |
Part D prescriptions in 2024
| Prescriptions (claims) | 535 · 662 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $2,601,158 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- University of California San FranciscoSan Francisco, CA · 1,839 clinicians
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
- Regents of the University of CaliforniaSan Francisco, CA · 732 clinicians
Hospital affiliation
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$6,208 · 15 payments from 6 companies
- 2024$45.26 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $3,969 | 5 |
| E.R. Squibb & Sons, L.L.C. | $1,710 | 2 |
| One Lambda, Inc. | $318.71 | 4 |
| Abbvie Inc. | $128.32 | 2 |
| Celgene Corporation | $41.73 | 1 |
What the 2025 payments were for
- Consulting Fee$5,430 · 4 payments
- Food and Beverage$778.28 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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