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

Dr. Timothy R Siegel, MD

Individual provider Surgery Physician · NPI 1619931870

Dr. Timothy R Siegel, MD practises General Surgery in Lebanon, New Hampshire. Graduated from Geisel School of Medicine at Dartmouth in 1990, 36 years ago. Practices with Dartmouth-Hitchcock Clinic, a 1,430-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in New Hampshire, Oregon and Virginia.

Years since qualifying
36
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
NH, OR, VA
In the registry since
2006
Specialties on file
6
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
Lebanon, NH 03756-1000
Phone: (603) 650-5000
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Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 3181 Sw Sam Jackson Park Rd, Portland, OR 97239 — (503) 494-6068
  • 1635 N George Mason Dr, Arlington, VA 22205-3601 — (703) 558-8501

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 33592 (NH)
Surgery Physician Taxonomy 208600000X · Licence 15327 (NH)
Surgery Physician Taxonomy 208600000X · Licence 0101257693 (VA)
Hospice and Palliative Medicine (Surgery) Physician Taxonomy 2086H0002X · Licence 0101257693 (VA)
Hospice and Palliative Medicine (Surgery) Physician Taxonomy 2086H0002X · Licence 15327 (NH)
Hospice and Palliative Medicine (Surgery) Physician Taxonomy 2086H0002X · Licence MD183891 (OR)

Record details

NPI number1619931870
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2006
Last updated in NPPESOctober 2, 2024
Certification dateOctober 2, 2024

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesHOSPICE/PALLIATIVE CARE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1990 (36 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.

Hernia repair - groin (open) 30 times · 98th percentile
Colonoscopy 35 times · 57th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 20 times · 50th percentile

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 patients46
Services billed 227 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