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Cardiovascular Disease (Cardiology)

Jonathan Siegfried, MD

Works at hospitals in Meriden, CT · Bridgeport, CT · New Haven, CT · Connecticut

Summary

Jonathan Siegfried, MD (Cardiovascular Disease (Cardiology)) is listed by Medicare at 3 hospitals in Meriden, CT, Bridgeport, CT and New Haven, CT. NPI 1720251549. 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 Jonathan Siegfried, 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

Cardiovascular Disease (Cardiology)Primary specialty
YesAccepts Medicare assignment
18Years since medical school (graduated 2008)
New York University School Of MedicineMedical school
MaleGender (as listed)
Hartford Healthcare Medical Group Specialists PLLCGroup practice

Quick answers

Which hospitals does Jonathan Siegfried work at?
Medicare's official clinician data lists Jonathan Siegfried at 3 hospitals: Midstate Medical Center, St Vincent's Medical Center and Yale-New Haven Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Jonathan Siegfried see patients?
Medicare's clinician data lists 6 practice locations, including Storrs, CT, Guilford, CT and Hamden, CT. Call before your visit to confirm the address.
What is Jonathan Siegfried's specialty?
Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
Does Jonathan Siegfried accept Medicare assignment?
Yes. Medicare's clinician data says Jonathan Siegfried 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 Jonathan Siegfried?
(860) 724-2579, as listed in official Medicare / NPI Registry data.
What is Jonathan Siegfried's NPI number?
1720251549. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Jonathan Siegfried works

Medicare's Facility Affiliation Data lists Jonathan Siegfried 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 Jonathan Siegfried is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Jonathan Siegfried as a member of this group (CMS data updated 2026-10-02).

  • Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →

Other cardiologists in Storrs

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

All cardiologists in Storrs →

Clinician information

CredentialMD
Medical schoolNew York University School Of Medicine
Graduation year2008
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720251549
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