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About this NPIWhat this record shows.
NPI 1144210857 is registered to Dr. Benjamin Duffy D.O., a Obesity Medicine (Internal Medicine) Physician practising at 200 Theda Clark Medical Plz Ste 420 in Neenah, Wisconsin. Obesity Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Benjamin Duffy D.O. has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Benjamin Duffy D.O. accepts. To confirm in-network status with your specific health plan, contact Dr. Benjamin Duffy D.O. directly at (920) 720-7211.
Frequently asked
Yes. NPI 1144210857 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Obesity Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (920) 720-7211.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Benjamin Duffy D.O. is a Type-1 individual NPI.
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