JEFFREY A WILLIS PA
NPI 1558388520
Physician Assistant in Mequon, WI

Q: What is Jeffrey Willis's NPI number?

The NPI number for Jeffrey Willis is 1558388520. It was assigned to this individual provider in the NPPES registry on July 16, 2006.

Q: What is Jeffrey Willis's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Q: When was this NPI record last updated?

The NPPES record for Jeffrey Willis was last updated on December 10, 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 16, 2006PECOS EnrolledAccepts Medicare Assignment

81.58/100

CMS Quality Rating

10945 N PORT WASHINGTON RD STE 201, MEQUON, WI 53092(262) 292-3151 Get Directions Write a Review

NPPES record last updated: December 10, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Dec 10, 2025, Nov 17, 2023 (2 updates tracked since 2023).

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About Jeffrey A Willis Pa NPPES

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

JEFFREY A WILLIS PA (NPI 1558388520) is an individual physician assistant in Mequon, Wisconsin, licensed in Wisconsin (1730) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Ascension St Francis Hospital, and maintains a secondary practice location in Beaver Dam.

NPPES Registry Identity

NPI1558388520

Entity TypeIndividualMale

Primary Taxonomy363A00000X

Provider Legal NameJEFFREY A WILLISCredential: PA

Location Address10945 N PORT WASHINGTON RD STE 201Mequon, WI 53092-5078

Mailing Address10945 N Port Washington Rd Ste 201Mequon, WI 53092-5078 · (262) 292-3151

Phone(262) 292-3151

Sole ProprietorNo

Medical School CMSOtherGraduated 2004

Enumeration DateJuly 16, 2006

Last NPPES UpdateDecember 10, 20252 updates tracked since enumeration

NPPES CertifiedDecember 10, 2025

✔ NPI 1558388520 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in WI · 1730

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

10945 N PORT WASHINGTON RD STE 201, Mequon, WI 53092

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Secondary Practice Location 1

Location 1707 S University AveBeaver Dam, WI 53916-3027 · Phone (920) 887-7181

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jeffrey A Willis Pa 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 ID4082683099

PECOS Enrollment IDI20040927001058

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.

Areas of Expertise CMS Part B claims 4

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.

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

22 services21 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

18 services16 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

13 services12 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

12 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Ascension St Francis Hospital

Acute Care Hospitals · Milwaukee, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520078

Location3237 S 16th StMilwaukee, WI 53215 · Milwaukee County

Emergency services

Ascension SE Wisconsin Hospital

Acute Care Hospitals · Milwaukee, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number520136

Location5000 W Chambers StMilwaukee, WI 53210 · Milwaukee County

Emergency services Birthing friendly

Midwest Orthopedic Specialty Hospital

Acute Care Hospitals · Franklin, WI

OwnershipPhysician

CMS Certification Number520205

Location10101 South 27th St 2nd FloorFranklin, WI 53132 · Milwaukee County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53092 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

$82.92 typical visit price

range $53.90 – $163.24

Typical copayment $20.73 (range $13.47 – $40.81)

Most-billed visit code 99203

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.58/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

94.95

Improvement Activities

Cost

41.55

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.

TIMOTHY L WORKMAN M.D.

Radiology (Diagnostic Radiology)