Dr. Eric H. Twerdahl
- Gender: Male
- Sole propriator: No
- NPI: 1093035461
Dr. Eric H. Twerdahl M.D.
Surgeon
He is located at 1 Medical Center Drive in Lebanon, NH 03756. Can help patients with the following: Anal Fissure, Appendicitis, Cancer, Diverticulosis, Pilonidal Cyst, Sebaceous Cyst. His National Provider Identifier (NPI) number is 1093035461. Appointment can be made via the phone number (603) 650-5000.
Conditions treated
Dr. Eric H. Twerdahl, being an surgeon, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Eric H. Twerdahl.
- Achalasia
- Anal Fissure
- Appendicitis
- Boils
- Cancer
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Ulcerative Colitis
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Eric H. Twerdahl as in-network for the following 2026 plans.
Health plans
Harvard Pilgrim Health Care
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 9 plans from Harvard Pilgrim Health Care
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| NH Local Choice HMO Bronze 8000 + $0 Rx list + $0 Virtual Urgent Care | HMO · Expanded Bronze | Preferred | Accepting new patients |
| NH Local Choice HMO Gold + $0 Rx list + $0 Virtual Urgent Care | HMO · Gold | Preferred | Accepting new patients |
| NH Local Choice HMO Gold 1400 + $0 Rx list + $0 Virtual Urgent Care | HMO · Gold | Preferred | Accepting new patients |
| NH Local Choice HMO HSA Bronze 6000 | HMO · Expanded Bronze | Preferred | Accepting new patients |
| NH Local Choice HMO Silver 3500 + $0 Rx list + $0 Virtual Urgent Care | HMO · Silver | Preferred | Accepting new patients |
| NH Local Choice HMO Silver 5000 + $0 Rx list + $0 Virtual Urgent Care | HMO · Silver | Preferred | Accepting new patients |
| NH Local HMO Bronze 7500 Standard + $0 Rx list + $0 Virtual Urgent Care | HMO · Expanded Bronze | Standard | Accepting new patients |
| NH Local HMO Gold 2000 Standard + $0 Rx list + $0 Virtual Urgent Care | HMO · Gold | Standard | Accepting new patients |
| NH Local HMO Silver 6000 Standard + $0 Rx list + $0 Virtual Urgent Care | HMO · Silver | Standard | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Eric H. Twerdahl is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Eric H. Twerdahl is enrolled to bill Medicare as a Practitioner - Vascular Surgery .
Bills through: University Of Virginia Physicians Group
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| W. L. Gore \u0026 Associates | $296 |
| Endologix | $42 |
| Medtronic | $34 |
Other
| Food and Beverage | $401 |
| Travel and Lodging | $17 |
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- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
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- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Female
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Female
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Female
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
- Gender: Male
- Address: 1 Medical Center Drive Lebanon, 3756, NH
Questions & Answers
What conditions does Dr. Eric H. Twerdahl treat?
Dr. Eric H. Twerdahl provides treatment for Anal Fissure, Appendicitis, Cancer, Diverticulosis, Pilonidal Cyst, Sebaceous Cyst. For the full list see this list.
Does Dr. Eric H. Twerdahl accept insurance?
Dr. Eric H. Twerdahl is listed in-network for 9 ACA Marketplace (Obamacare/HealthCare.gov) plans from Harvard Pilgrim Health Care. See the Marketplace plans section for details.
Where can you meet with Dr. Eric H. Twerdahl?
Dr. Eric H. Twerdahl's office is located at 1 Medical Center Drive in Lebanon, NH 03756.