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Internal Medicine

Catherine E. Hylwa, MD

Works at hospitals in New London, CT · Middletown, CT · Norwich, CT … · Connecticut

Summary

Catherine E. Hylwa, MD (Internal Medicine) is listed by Medicare at 4 hospitals in New London, CT, Middletown, CT and Norwich, CT and other places. NPI 1124092515. 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 E. Hylwa, 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
34Years since medical school (graduated 1992)
FemaleGender (as listed)
Hartford Healthcare Medical Group IncGroup practice

Quick answers

Which hospitals does Catherine E. Hylwa work at?
Medicare's official clinician data lists Catherine E. Hylwa at 4 hospitals: Lawrence & Memorial Hospital, Middlesex Hospital, William W Backus Hospital and Windham Community Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Catherine E. Hylwa see patients?
Medicare's clinician data lists 1 practice location in Glastonbury, CT. Call before your visit to confirm the address.
What is Catherine E. Hylwa's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Catherine E. Hylwa accept Medicare assignment?
Yes. Medicare's clinician data says Catherine E. Hylwa 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 E. Hylwa offer telehealth?
Medicare's clinician data says Catherine E. Hylwa offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Catherine E. Hylwa?
(860) 696-2060, as listed in official Medicare / NPI Registry data.
What is Catherine E. Hylwa's NPI number?
1124092515. 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 E. Hylwa works

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

Group practices

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

  • Hartford Healthcare Medical Group Inc267 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Glastonbury

Clinicians with the same Medicare primary specialty in Glastonbury, CT — not a recommendation.

All internal medicine doctors in Glastonbury →

Clinician information

CredentialMD
Graduation year1992
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1124092515
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