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NPISignal

Individual Healthcare Provider

Benjamin J Duffy, D.O.

NPI Record: ActiveInternal Medicine — Obesity Medicine
NPI1144210857
Neenah, Wisconsin

Provider's NPPES record last updated: June 6, 2024

Overview

Entity Type
Individual Healthcare Provider
NPI
1144210857
Primary Specialty
Internal Medicine — Obesity Medicine
Practice Location
Neenah, Wisconsin
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 identified

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 21, 2026, 9:18 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

Not checked

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.

Run a name-based screening

Searches OIG LEIE and SAM.gov by name and reviews every potential match.

Specialties & Taxonomies

  • Internal Medicine

    Obesity Medicine

    Allopathic & Osteopathic Physicians

    Primary

    A physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.

    Taxonomy code 207RB0002X
  • Internal Medicine

    Allopathic & Osteopathic Physicians

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Taxonomy code 207R00000X
  • Hospitalist

    Allopathic & Osteopathic Physicians

    Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

    Taxonomy code 208M00000X

Provider-Reported License Information

Internal Medicine (Wisconsin)
48370-021
Internal Medicine (Wisconsin)
48370-021
Hospitalist (Wisconsin)
48370
License numbers are reported by the provider to NPPES and are not independently verified by NPISignal against any state licensing board. Confirm current license status directly with the issuing state board.

Practice Locations

Practice Location

200 Theda Clark Medical Plz Ste 420

Neenah, Wisconsin 54956-2771

Phone: (920) 720-7211

Additional Practice Location

1818 N Meade St

Appleton, Wisconsin 54911-3454

Phone: (920) 735-7645

Fax: (920) 735-7618

Additional Practice Location

3851 Roger Brooke Dr

San Antonio, Texas 78234-4501

Phone: (210) 916-4678

Additional Practice Location

130 2nd St

Neenah, Wisconsin 54956-2883

Phone: (920) 729-2738

Fax: (920) 729-3021

Record Information

Enumeration Date
October 25, 2005
Provider's NPPES Record Last Updated
June 6, 2024
Certification Date
June 4, 2024
NPISignal NPPES Dataset
August 2026

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