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

Jennifer Erin Tonneson, MD

Individual provider Surgical Oncology Physician · NPI 1144512526

Jennifer Erin Tonneson, MD practises General Surgery in Lebanon, New Hampshire. Graduated from Geisel School of Medicine at Dartmouth in 2011, 15 years ago. Practices with Dartmouth-Hitchcock Clinic, a 1,430-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Minnesota and New Hampshire.

Years since qualifying
15
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
MN, NH
In the registry since
2011
Specialties on file
2
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

1 Medical Center Dr Dhmc - Dept OF Surgery
Lebanon, NH 03756-1000
Phone: (603) 650-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 200 1st St Sw, Rochester, MN 55905-0001 — (507) 284-2511

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 25282 (NH)
Surgical Oncology Physician Taxonomy 2086X0206X · Licence 67100 (MN)

Record details

NPI number1144512526
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 4, 2011
Last updated in NPPESMarch 11, 2024
Certification dateMarch 11, 2024

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 2011 (15 years in practice)
Group practice Dartmouth-Hitchcock Clinic — 1430 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Mastectomy 58 times · 96th percentile
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients90
Services billed 199 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Dartmouth-Hitchcock Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1430 clinicians in the practice; 12 are shown here.

Other providers in Lebanon