Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jonathan Siegfried, MD

Individual provider Cardiovascular Disease Physician · NPI 1720251549

Jonathan Siegfried, MD is a Cardiovascular Disease (Cardiology) in New Haven, Connecticut. Graduated from New York University School of Medicine in 2008, 18 years ago. Practices with Hartford Healthcare Medical Group Specialists PLLC, a 1,537-clinician group and accepts Medicare assignment. Licensed in Connecticut and New York.

Years since qualifying
18
Trained at
New York University School of Medicine
Licensed in
CT, NY
In the registry since
2008
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

46 Prince St Ste 500
New Haven, CT 06519-1600
Phone: (203) 867-5300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 54031 (CT)
Interventional Cardiology Physician Taxonomy 207RI0011X · Licence 54031 (CT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 254548 (NY)

Record details

NPI number1720251549
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 12, 2008
Last updated in NPPESSeptember 30, 2020
Certification dateSeptember 30, 2020
Mailing address46 Prince St Ste 310, New Haven, CT 06519-1600

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Hartford Healthcare Medical Group Specialists Pllc — 1537 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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