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ISAAC J HOFFMASTER RD
NPI 1568988376
Dietitian, Registered in Prairie Du Sac, WI

Active since August 15, 2017
260 26TH ST, PRAIRIE DU SAC, WI 53578(608) 643-7529 Get Directions Write a Review

NPPES record last updated: August 15, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Isaac J Hoffmaster Rd NPPES

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

ISAAC J HOFFMASTER RD (NPI 1568988376) is an individual dietitian, registered in Prairie Du Sac, Wisconsin, licensed in Wisconsin (86021879) and active in the NPI registry since August 2017.

NPPES Registry Identity

NPI1568988376
Entity TypeIndividualMale
Primary Taxonomy133V00000X
Provider Legal NameISAAC J HOFFMASTERCredential: RD
Location Address260 26TH STPrairie Du Sac, WI 53578-2203
Mailing Address260 26th StPrairie Du Sac, WI 53578-2203
Phone(608) 643-7529
Sole ProprietorNo
Enumeration DateAugust 15, 2017
✔ NPI 1568988376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in WI · 86021879
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
260 26TH ST, Prairie Du Sac, WI 53578
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Group Health Cooperative-SCW.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Isaac J Hoffmaster Rd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Isaac Hoffmaster reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sauk Prairie Healthcare Inc
Same address
Nurse Practitioner
260 26TH ST
Prairie Du Sac, WI 53578
  • Reassigned Medicare billing, Wisconsin enrollment
  • 110 clinicians in this Medicare group
NPI 1093220246 (608) 643-7574

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

MRS. KIMBERLY L OLSON APNP
Nurse Practitioner
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-3311
MS. CHRISTINE JANET VAN DYKE PA-C
Physician Assistant
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-3311
SAUK PRAIRIE HEALTHCARE INC
Nurse Practitioner
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-7574
DR. ARNOLD N. ROSENTHAL M.D.
Orthopaedic Surgery
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-2471
ANN MORAN LPC, SAC
Counselor (Professional)
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 000-0000
JOELLEN E FRAWLEY APNP
Nurse Practitioner
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-3311
DANIELLE LANE YOUNG PHARMD
Pharmacist
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-3311
SAUK PRAIRIE HEALTHCARE INC
General Acute Care Hospital
260 26TH ST
PRAIRIE DU SAC, WI 53578
Sauk County (608) 643-3311

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Isaac Hoffmaster's NPI number?

The NPI number for Isaac Hoffmaster is 1568988376. It was assigned to this individual provider in the NPPES registry on August 15, 2017.

Where is Isaac Hoffmaster located?

Isaac Hoffmaster practices at 260 26th St, Prairie Du Sac, WI 53578. The listed phone number is (608) 643-7529.

What is Isaac Hoffmaster's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Isaac Hoffmaster enrolled in Medicare?

Yes. Isaac Hoffmaster is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Isaac Hoffmaster's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Hoffmaster reassigns Medicare benefits to Sauk Prairie Healthcare Inc (Prairie Du Sac, WI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Isaac Hoffmaster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Isaac Hoffmaster accept?

Health plans from Group Health Cooperative-SCW list Isaac Hoffmaster as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Isaac Hoffmaster was last updated on August 15, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.