ERIC H TWERDAHL JR. MD
NPI 1093035461
Surgery - Vascular Surgery in Lebanon, NH
About Eric H Twerdahl Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ERIC H TWERDAHL JR. MD (NPI 1093035461) is an individual vascular surgery provider in Lebanon, New Hampshire, licensed in New Hampshire (35090) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Eric H Twerdahl Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Eric Twerdahl reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Manchester, NH 03109
- Reassigned Medicare billing, New Hampshire enrollment
- 446 clinicians in this Medicare group
Baltimore, MD 21205
- Reassigned Medicare billing, District of Columbia enrollment
- 80 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, District of Columbia enrollment
- 691 clinicians in this Medicare group
Washington, DC 20037
- Reassigned Medicare billing, District of Columbia enrollment
- 1,275 clinicians in this Medicare group
Charlottesville, VA 22911
- Reassigned Medicare billing, Virginia enrollment
- 2,820 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHElliot Hospital
Acute Care Hospitals · Manchester, NHRutland Regional Medical Center
Acute Care Hospitals · Rutland, VTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03756 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Eric Twerdahl's NPI number?
The NPI number for Eric Twerdahl is 1093035461. It was assigned to this individual provider in the NPPES registry on June 8, 2010.
Where is Eric Twerdahl located?
Eric Twerdahl practices at 1 Medical Center Dr, Lebanon, NH 03756. The listed phone number is (603) 650-5000.
What is Eric Twerdahl's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Eric Twerdahl enrolled in Medicare?
Yes. Eric Twerdahl is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Eric Twerdahl's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eric Twerdahl reassigns Medicare benefits to 7 organizations: Mary Hitchcock Memorial Hospital (Lebanon, NH), Dartmouth-Hitchcock Clinic (Lebanon, NH), Elliot Professional Services (Manchester, NH), Johns Hopkins University (Baltimore, MD), Johns Hopkins Community Physicians, Inc (Baltimore, MD) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Eric Twerdahl's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Eric Twerdahl accept?
Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Eric Twerdahl as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Eric Twerdahl affiliated with any hospitals?
According to CMS data, Eric Twerdahl is affiliated with Mary Hitchcock Memorial Hospital, Elliot Hospital and Rutland Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Eric Twerdahl was last updated on May 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Eric H Twerdahl Jr., MD · NPI 1093035461
Vascular Surgery physician in Lebanon, New Hampshire. Individual provider, active in the CMS NPPES registry since June 8, 2010.
## Identity
- **NPI:** 1093035461 (Entity type: Individual)
- **Enumerated:** June 8, 2010
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** 35090 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER DR, Lebanon, NH 03756-0001
- **Phone:** (603) 650-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Mary Hitchcock Memorial Hospital (NPI 1629788237, Lebanon, NH); Dartmouth-Hitchcock Clinic (NPI 1548210198, Lebanon, NH); Elliot Professional Services (NPI 1285627935, Manchester, NH); Johns Hopkins University (NPI 1124009758, Baltimore, MD); Johns Hopkins Community Physicians, Inc (NPI 1255359972, Baltimore, MD); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2010
## Record status
- **NPPES last updated:** May 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1093035461) · Data from the CMS NPPES public registry.