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Internal Medicine

Maritza G. Parreno, MD

Works at hospitals in Milford, DE · Lewes, DE · Seaford, DE … · Delaware, Maryland

Summary

Maritza G. Parreno, MD (Internal Medicine) is listed by Medicare at 4 hospitals in Milford, DE, Lewes, DE and Seaford, DE and other places. NPI 1215048871. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Maritza G. Parreno, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
Albert Einstein College Of Medicine Of Yeshiva UniversityMedical school
FemaleGender (as listed)
Tidalhealth Physician Network, Inc.Group practice

Quick answers

Which hospitals does Maritza G. Parreno work at?
Medicare's official clinician data lists Maritza G. Parreno at 4 hospitals: Bayhealth Hospital, Sussex Campus, Beebe Medical Center, Tidalhealth Nanticoke, Inc. and Tidalhealth Peninsula Regional, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Maritza G. Parreno see patients?
Medicare's clinician data lists 1 practice location in Seaford, DE. Call before your visit to confirm the address.
What is Maritza G. Parreno's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Maritza G. Parreno accept Medicare assignment?
Yes. Medicare's clinician data says Maritza G. Parreno 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 Maritza G. Parreno?
(302) 990-3300, as listed in official Medicare / NPI Registry data.
What is Maritza G. Parreno's NPI number?
1215048871. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Maritza G. Parreno works

Medicare's Facility Affiliation Data lists Maritza G. Parreno at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Maritza G. Parreno is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Maritza G. Parreno as a member of this group (CMS data updated 2026-10-02).

  • Tidalhealth Physician Network, Inc.117 clinicians in the group

Specialties

Find other Internal Medicine doctors in Delaware →

Other internal medicine doctors in Seaford

Clinicians with the same Medicare primary specialty in Seaford, DE — not a recommendation.

All internal medicine doctors in Seaford →

Clinician information

CredentialMD
Medical schoolAlbert Einstein College Of Medicine Of Yeshiva University
Graduation year1994
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1215048871
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians