Quick answers
- Which hospitals does Cesar Diaz Marquez work at?
- Medicare's official clinician data lists Cesar Diaz Marquez at 2 hospitals: Bayhealth Hospital, Sussex Campus and Bayhealth Medical Center, Kent Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cesar Diaz Marquez see patients?
- Medicare's clinician data lists 1 practice location in Milford, DE. Call before your visit to confirm the address.
- What is Cesar Diaz Marquez's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Cesar Diaz Marquez accept Medicare assignment?
- Yes. Medicare's clinician data says Cesar Diaz Marquez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Cesar Diaz Marquez?
- (302) 430-5175, as listed in official Medicare / NPI Registry data.
- What is Cesar Diaz Marquez's NPI number?
- 1699208694. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cesar Diaz Marquez works
Medicare's Facility Affiliation Data lists Cesar Diaz Marquez at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bayhealth Hospital, Sussex CampusMilford, DE · Acute Care Hospital · CCN 080009
- Bayhealth Medical Center, Kent CampusDover, DE · Acute Care Hospital · CCN 080004
Practice locations
Addresses where Cesar Diaz Marquez is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Wellness WayMilford, DE 19963 (302) 430‑5175
Group practices
Medicare enrollment lists Cesar Diaz Marquez as a member of this group (CMS data updated 2026-10-02).
- Apogee Medical Group Delaware Inc91 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Milford
Clinicians with the same Medicare primary specialty in Milford, DE — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699208694 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians