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Nurse Practitioner

Karen M. Mather, NP

Works at hospitals in Lewes, DE · Salisbury, MD · Delaware, Maryland

Summary

Karen M. Mather, NP (Nurse Practitioner) is listed by Medicare at 2 hospitals in Lewes, DE and Salisbury, MD. NPI 1285250118. 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 Karen M. Mather, 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

Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
7Years since medical school (graduated 2019)
FemaleGender (as listed)
Bethany Primary CareGroup practice

Quick answers

Which hospitals does Karen M. Mather work at?
Medicare's official clinician data lists Karen M. Mather at 2 hospitals: Beebe Medical Center and Tidalhealth Peninsula Regional, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Karen M. Mather see patients?
Medicare's clinician data lists 1 practice location in Bethany Beach, DE. Call before your visit to confirm the address.
What is Karen M. Mather's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Karen M. Mather accept Medicare assignment?
Yes. Medicare's clinician data says Karen M. Mather 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.
Does Karen M. Mather offer telehealth?
Medicare's clinician data says Karen M. Mather offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Karen M. Mather?
(302) 537-1100, as listed in official Medicare / NPI Registry data.
What is Karen M. Mather's NPI number?
1285250118. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Karen M. Mather works

Medicare's Facility Affiliation Data lists Karen M. Mather 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 Karen M. Mather is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Karen M. Mather as a member of this group (CMS data updated 2026-10-02).

  • Bethany Primary Care4 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Delaware →

Other nurse practitioners in Delaware

Clinicians with the same Medicare primary specialty in Delaware — not a recommendation.

All nurse practitioners in Delaware →

Clinician information

CredentialNP
Graduation year2019
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1285250118
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