Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Erik Underhill, MD

Individual provider Internal Medicine Physician · NPI 1881767382

Erik Underhill, MD practises Internal Medicine in Wilmington, Delaware. Graduated from Tufts University School of Medicine in 1996, 30 years ago. Practices with Value in Prevention of Delaware LLC, a 4-clinician group and accepts Medicare assignment. Licensed in Delaware.

Years since qualifying
30
Trained at
Tufts University School of Medicine
Licensed in
DE
In the registry since
2006
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

1806 N Van Buren St Ste 200
Wilmington, DE 19802-3851 Not confirmed with CMS for 18 years — call before visiting
Phone: (302) 652-3771
Fax: (302) 652-3773
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C1-0006425 (DE)

Record details

NPI number1881767382
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESApril 4, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Value In Prevention Of Delaware Llc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients199
Services billed 1,544 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

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.

Colleagues at Value in Prevention of Delaware LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Wilmington