DOUGLAS P DUFFY MD
NPI 1366542227
Internal Medicine - Nephrology in Marshfield, WI

Q: What is Douglas Duffy's NPI number?

The NPI number for Douglas Duffy is 1366542227. It was assigned to this individual provider in the NPPES registry on September 22, 2006.

Q: What is Douglas Duffy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Douglas Duffy was last updated on August 1, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.

Active since September 22, 2006PECOS Enrolled

1000 N OAK AVE, MARSHFIELD, WI 54449(715) 387-5345 Get Directions Write a Review

NPPES record last updated: August 1, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Douglas P Duffy Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DOUGLAS P DUFFY MD (NPI 1366542227) is an individual nephrology provider in Marshfield, Wisconsin, licensed in Wisconsin (25241) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366542227

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDOUGLAS P DUFFYCredential: MD

Location Address1000 N OAK AVEMarshfield, WI 54449

Mailing Address1000 N Oak AveMarshfield, WI 54449-5777

Phone(715) 387-5345

Sole ProprietorNo

Enumeration DateSeptember 22, 2006

Last NPPES UpdateAugust 1, 2018

✔ NPI 1366542227 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

Licenses✔ Licensed in WI · 25241✔ Licensed in ND · LT15265

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License 25241 (WI)

1000 N OAK AVE, Marshfield, WI 54449

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Other Identifiers 3

OtherLT15265ND · Nd License #

Other207RN0300XND · Taxonomy

Medicaid30517100WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Douglas P Duffy Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54449 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

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