Gabriel Noah Mannis, MD
NPI 1881929347ActiveIndividual· Internal Medicine, Medical Oncology· Stanford, CA
Internal Medicine, Medical Oncology (MD) in Stanford, California, trained at University of California, Davis School of Medicine (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $1,998,547 for 287 claims, against $84,072 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $29,416 in all, mostly consulting fees.
Overview
| NPI | 1881929347 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 16, 2009 |
| Last updated in NPPES | Apr 12, 2024 |
| Certified by provider | Apr 12, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A110736 | CA |
| Internal Medicine | 207R00000X | A110736 | CA |
| Internal Medicine, Hematology | 207RH0000X | A110736 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | A110736 | 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 | 132 |
|---|---|
| Services billed | 696 across 6 procedure codes |
| Paid by Medicare | $84,072 |
Part D prescriptions in 2024
| Prescriptions (claims) | 287 · 336 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $1,998,547 |
| Generic share | 50% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine, Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$29,416 · 27 payments from 11 companies
- 2024$28,969 · 36 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $9,290 | 10 |
| Taiho Oncology, Inc. | $3,900 | 1 |
| Astellas Pharma Global Development | $3,718 | 2 |
| Daiichi Sankyo Inc. | $3,393 | 4 |
| Janssen Scientific Affairs, LLC | $2,659 | 3 |
What the 2025 payments were for
- Consulting Fee$27,877 · 15 payments
- Food and Beverage$854.06 · 11 payments
- Honoraria$685.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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