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

Glen Erik Tonnessen, MD

Individual provider Phlebology Physician · NPI 1154387389

Glen Erik Tonnessen, MD is a Cardiovascular Disease (Cardiology) in Flemington, New Jersey. Qualified in 1987, 39 years ago. Practices with Hunterdon Cardiovascular Associates, a 17-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
39
Licensed in
NJ
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1100 Wescott Dr Ste G 3
Flemington, NJ 08822
Phone: (908) 788-1710
Fax: (908) 788-1716
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence MA055129 (NJ)
Phlebology Physician Taxonomy 202K00000X · Licence 25MA05512900 (NJ)

Record details

NPI number1154387389
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 25, 2006
Last updated in NPPESMarch 27, 2025
Certification dateMarch 27, 2025

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice Hunterdon Cardiovascular Associates — 17 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare