DR. WILLIAM C. HOFMANN M.D.
NPI 1306844949
Otolaryngology in Fort Atkinson, WI

Q: What is William Hofmann's NPI number?

The NPI number for William Hofmann is 1306844949. It was assigned to this individual provider in the NPPES registry on July 8, 2005.

Q: What is William Hofmann's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Q: When was this NPI record last updated?

The NPPES record for William Hofmann was last updated on December 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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 July 08, 2005PECOS EnrolledAccepts Medicare Assignment

611 SHERMAN AVE E, FORT ATKINSON, WI 53538(920) 563-6667 Get Directions Write a Review

NPPES record last updated: December 31, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 31, 2025, Mar 7, 2023 (2 updates tracked since 2023).

On this page

About Dr. William C. Hofmann M.d. NPPES

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

DR. WILLIAM C. HOFMANN M.D. (NPI 1306844949) is an individual otolaryngology provider in Fort Atkinson, Wisconsin, licensed in Wisconsin (52883-20) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Fort Memorial Hospital, and is a graduate of University Of Cincinnati College Of Medicine (1998).

NPPES Registry Identity

NPI1306844949

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameDR. WILLIAM C. HOFMANNCredential: M.D.

Location Address611 SHERMAN AVE EFort Atkinson, WI 53538-1960

Mailing AddressPo Box 249Fort Atkinson, WI 53538-0249 · (920) 563-4466 · Fax (920) 568-4004

Phone(920) 563-6667

Sole ProprietorNo

Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 1998

Enumeration DateJuly 8, 2005

Last NPPES UpdateDecember 31, 20252 updates tracked since enumeration

NPPES CertifiedDecember 31, 2025

✔ NPI 1306844949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in WI · 52883-20

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

611 SHERMAN AVE E, Fort Atkinson, WI 53538

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Other Identifiers 1

Medicaid036109322IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Dean Health Plan, Group Health Cooperative-SCW and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William C. Hofmann M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7214093368

PECOS Enrollment IDI20090909000751

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.

Medicare Billing Reassignment

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

Fort Healthcare, Inc.

Same address

General Acute Care Hospital

611 SHERMAN AVE E
Fort Atkinson, WI 53538

Reassigned Medicare billing, Wisconsin enrollment
298 clinicians in this Medicare group

NPI 1811916281 (920) 568-5000

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

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

164 services117 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

62 services54 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

50 services40 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

47 services47 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

41 services36 patients

Diagnostic exam of voice box using a flexible endoscope 31575

This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.

27 services26 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Fort Memorial Hospital

Acute Care Hospitals · Fort Atkinson, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number520071

Location611 Sherman Ave EFort Atkinson, WI 53538 · Jefferson County

Emergency services Birthing friendly

Watertown Memorial Hospital

Acute Care Hospitals · Watertown, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520116

Location125 Hospital DriveWatertown, WI 53098 · Dodge County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53538 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

$67.37 typical visit price

range $17.40 – $133.76

Typical copayment $16.84 (range $4.35 – $33.44)

Most-billed visit code 99213

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.

BONNIE L POPPY APNP

Nurse Practitioner