Diana Vesselinovitch Maslov, MD
NPI 1659834885ActiveIndividual· Hospitalist· La Jolla, CA
Hospitalist (MD) with Sharp Rees-Stealy Medical Group Inc, practicing in La Jolla, California. Their prescriptions cost Medicare Part D more than their services did: $60,532 for 100 claims, against $3,706 paid for services in 2024. Aveo Pharmaceuticals, Inc. was the largest of 22 companies reporting payments in 2025, $1,669 in all, mostly food and beverage. Lists Sharp Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1659834885 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 14, 2019 |
| Last updated in NPPES | Oct 18, 2022 |
| Certified by provider | Oct 18, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A177830 | CA |
| Internal Medicine | 207R00000X | A177830 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 32 |
|---|---|
| Services billed | 287 across 18 procedure codes |
| Paid by Medicare | $3,706 |
Part D prescriptions in 2024
| Prescriptions (claims) | 100 · 144 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $60,532 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sharp Rees-Stealy Medical Group IncSan Diego, CA · 884 clinicians
Hospital affiliation
- Sharp Memorial HospitalSan Diego, CA
Industry payments (Open Payments)
- 2025$1,669 · 47 payments from 22 companies
- 2024$2,215 · 74 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aveo Pharmaceuticals, Inc. | $344.23 | 8 |
| Janssen Biotech, Inc. | $188.53 | 3 |
| Novartis Pharmaceuticals Corporation | $155.82 | 3 |
| Genzyme Corporation | $153.09 | 3 |
| Amgen Inc. | $124.85 | 1 |
What the 2025 payments were for
- Food and Beverage$1,458 · 44 payments
- Education$111.40 · 2 payments
- Long term medical supply or device loan$99.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 69 hospitalists in La Jolla · All hospitalists in California