Individual Healthcare Provider
Eric H Twerdahl, MD
Provider's NPPES record last updated: May 28, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1093035461
- Primary Specialty
- Surgery — Vascular Surgery
- Practice Location
- Lebanon, New Hampshire
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 5:09 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Surgery
Vascular Surgery
Allopathic & Osteopathic Physicians
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.
Taxonomy code 2086S0129X Surgery
Allopathic & Osteopathic Physicians
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Taxonomy code 208600000X
Provider-Reported License Information
- Surgery (New Hampshire)
- 35090
- Surgery (District of Columbia)
- MD210001833
- Surgery (Massachusetts)
- L-244073
- Surgery (Virginia)
- 0101257909
Practice Locations
Practice Location
1 Medical Center Dr
Lebanon, New Hampshire 03756-0001
Phone: (603) 650-5000
Additional Practice Location
2150 Pennsylvania Ave Nw
Washington, District of Columbia 20037-3201
Phone: (202) 741-3210
Additional Practice Location
1215 Lee St
Charlottesville, Virginia 22908-0816
Phone: (434) 243-1000
Fax: (434) 244-7551
Additional Practice Location
8600 Old Georgetown Rd
Bethesda, Maryland 20814-1422
Phone: (301) 896-2578
Fax: (301) 897-1378
Record Information
- Enumeration Date
- June 8, 2010
- Provider's NPPES Record Last Updated
- May 28, 2026
- Certification Date
- May 28, 2026
- NPISignal NPPES Dataset
- August 2026
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