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Internal Medicine

Catherine M. Teskin, DO

Works at hospitals in Dover, DE · Newark, DE · Elkton, MD · Delaware, Maryland

Summary

Catherine M. Teskin, DO (Internal Medicine) is listed by Medicare at 3 hospitals in Dover, DE, Newark, DE and Elkton, MD. NPI 1770089112. 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 Catherine M. Teskin, 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
YesOffers telehealth
8Years since medical school (graduated 2018)
Edward Via Col Of Osteo Medicine-Virginia CampusMedical school
FemaleGender (as listed)
Christiana Care Health Services IncGroup practice

Quick answers

Which hospitals does Catherine M. Teskin work at?
Medicare's official clinician data lists Catherine M. Teskin at 3 hospitals: Bayhealth Medical Center, Kent Campus, Christiana Hospital and Union Hospital of Cecil County. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Catherine M. Teskin see patients?
Medicare's clinician data lists 1 practice location in Newark, DE. Call before your visit to confirm the address.
What is Catherine M. Teskin's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Rheumatology.
Does Catherine M. Teskin accept Medicare assignment?
Yes. Medicare's clinician data says Catherine M. Teskin 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 Catherine M. Teskin offer telehealth?
Medicare's clinician data says Catherine M. Teskin offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Catherine M. Teskin?
(302) 320-2490, as listed in official Medicare / NPI Registry data.
What is Catherine M. Teskin's NPI number?
1770089112. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Catherine M. Teskin works

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

Group practices

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

  • Christiana Care Health Services Inc1,483 clinicians in the group

Specialties

Find other Internal Medicine doctors in Delaware →

Other internal medicine doctors in Newark

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

All internal medicine doctors in Newark →

Clinician information

CredentialDO
Medical schoolEdward Via Col Of Osteo Medicine-Virginia Campus
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1770089112
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