Cesar Diaz-Marquez, M.D.
NPI 1699208694ActiveIndividual· Internal Medicine· Milford, DE
Internal Medicine (M.D.) with Apogee Medical Group Delaware Inc, practicing in Milford, Delaware. In 2024 Medicare paid $79,487 for 327 patients, and Part D covered 282 of their prescriptions, 85% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $198.15 in all, mostly food and beverage. Lists Bayhealth Hospital, Sussex Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1699208694 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 6, 2017 |
| Last updated in NPPES | Dec 9, 2022 |
| Certified by provider | Dec 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C1-0025546 | DE |
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 - Hospitalist (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 327 |
|---|---|
| Services billed | 1,053 across 16 procedure codes |
| Paid by Medicare | $79,487 |
Part D prescriptions in 2024
| Prescriptions (claims) | 282 · 333 30-day fills |
|---|---|
| Patients | 104 |
| Total drug cost | $17,204 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Apogee Medical Group Delaware IncDover, DE · 91 clinicians
Hospital affiliations
- Bayhealth Hospital, Sussex CampusMilford, DE
- Bayhealth Medical Center, Kent CampusDover, DE
Industry payments (Open Payments)
- 2025$198.15 · 5 payments from 4 companies
- 2024$179.78 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $123.28 | 1 |
| Grifols USA, LLC | $30.80 | 2 |
| Boston Scientific Corporation | $28.88 | 1 |
| Ceribell, Inc. | $15.19 | 1 |
What the 2025 payments were for
- Food and Beverage$198.15 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 88 internal medicine physicians in Milford · All internal medicine physicians in Delaware