Diana Blum, MD
NPI 1952599839ActiveIndividual· Psychiatry & Neurology, Neurology· Stanford, CA
Opted out of Medicare from July 2016 to July 2028. Psychiatry & Neurology, Neurology (MD) in Stanford, California, licensed in CA, with an NPI issued in October 2007. Part D covered 1,360 prescriptions written in 2024, 49% of them generic. Mdd US Operations, LLC was the largest of 3 companies reporting payments in 2025, $427.49 in all, mostly food and beverage.
Overview
| NPI | 1952599839 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 4, 2007 |
| Last updated in NPPES | Jun 8, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | A92277 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jul 1, 2016 – Jul 1, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 1,360 · 2,396 30-day fills |
|---|---|
| Patients | 44 |
| Total drug cost | $1,304,929 |
| Generic share | 49% of claims |
Industry payments (Open Payments)
- 2025$427.49 · 17 payments from 3 companies
- 2024$227.67 · 15 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mdd US Operations, LLC | $264.01 | 8 |
| Abbvie Inc. | $149.08 | 8 |
| Amneal Pharmaceuticals LLC | $14.40 | 1 |
What the 2025 payments were for
- Food and Beverage$378.68 · 16 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$48.81 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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