Active NPI 1558388520 Individual Practitioner Male Practitioner

Jeffrey A Willis , PA

Physician Assistant • Mequon, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Jeffrey Willis, PA is a certified Physician Assistant practicing in Mequon, WI. With approximately 22 years of clinical experience since completing medical education in 2004, Jeffrey Willis delivers high-quality medical care to the local community at 10945 N PORT WASHINGTON RD STE 201.

Jeffrey Willis is affiliated with Milwaukee Radiologists Ltd and accepts Medicare assignment.

Frequently performed procedures and clinical services include fluoroscopic guidance for needle placement, aspiration of fluid from chest cavity using imaging guidance, moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

10945 N Port Washington Rd Ste 201

Mequon, WI 530925078

Telephone 2622923151

Associated Practice Facility / Clinic

🏢 Wisconsin Radiology Specialists, S C Facility NPI 1568446003

Medicare Profile & Education

Medical School

Other

Graduation Year

2004

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Mequon, WI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

22 Yrs +11.0 yrs vs City Avg

City Avg: 11.0 Yrs

State Avg: 14.1 Yrs

Regional Practice Density

36 Specialists

Practicing in Mequon, WI (3517 Statewide)

Telehealth Adoption Rate

11.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

85.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Willis (22 Years) 22 Yrs

Mequon Specialty Average (11.0 Years) 11.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
77002 Fluoroscopic guidance for needle placement	22	21	$128.00	$20.81
32555 Aspiration of fluid from chest cavity using imaging guidance	18	16	$563.00	$83.92
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	13	12	$77.00	$9.34
20610 Aspiration and/or injection of fluid from large joint	12	11	$243.75	$35.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
49083 Drainage of fluid from abdominal cavity using imaging guidance	38	11	$594.00	$83.47
77002 Fluoroscopic guidance for needle placement	24	23	$128.00	$21.88
99231 Follow-up hospital inpatient care per day, typically 15 minutes	19	13	$156.00	$39.73
20610 Aspiration and/or injection of fluid from large joint	17	16	$238.24	$36.57
32555 Aspiration of fluid from chest cavity using imaging guidance	15	13	$563.00	$87.23
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	14	14	$77.00	$9.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
49083 Drainage of fluid from abdominal cavity using imaging guidance	51	15	$594.00	$84.63
77002 Fluoroscopic guidance for needle placement	15	14	$128.00	$21.61
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	15	13	$258.00	$56.94
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	14	13	$77.00	$9.84
20610 Aspiration and/or injection of fluid from large joint	13	12	$242.31	$36.16
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$311.00	$79.02
32555 Aspiration of fluid from chest cavity using imaging guidance	12	12	$563.00	$88.08
10005 Fine needle aspiration of first lesion using ultrasound guidance	11	11	$459.00	$59.09

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
49083 Drainage of fluid from abdominal cavity using imaging guidance	21	12	$580.67	$86.40
32555 Aspiration of fluid from chest cavity using imaging guidance	18	16	$578.33	$90.21
36573 Insertion of tube for infusion with imaging guidance and review by radiologist, patient 5 years or older	17	16	$546.00	$67.88
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	13	13	$95.54	$15.01

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
32555 Aspiration of fluid from chest cavity using imaging guidance	63	51	$582.89	$92.80
49083 Drainage of fluid from abdominal cavity using imaging guidance	60	19	$564.20	$89.10
99231 Follow-up hospital inpatient care per day, typically 15 minutes	56	36	$236.21	$32.48
36589 Removal of central venous catheter for infusion	28	28	$704.57	$111.93
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	26	23	$95.62	$15.52
76937 Ultrasonic guidance for blood vessel access	24	22	$75.83	$12.08
77002 Fluoroscopic guidance for needle placement	22	22	$143.05	$23.37
20610 Aspiration and/or injection of fluid from large joint	19	19	$232.26	$37.52
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	16	15	$620.13	$70.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	15	$332.00	$65.51
36573 Insertion of tube for infusion with imaging guidance and review by radiologist, patient 5 years or older	12	12	$411.33	$70.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	147	54	$224.90	$32.17
32555 Aspiration of fluid from chest cavity using imaging guidance	115	71	$557.09	$93.09
49083 Drainage of fluid from abdominal cavity using imaging guidance	54	28	$537.98	$87.25
77002 Fluoroscopic guidance for needle placement	48	41	$136.69	$22.98
20610 Aspiration and/or injection of fluid from large joint	40	33	$228.41	$37.12
77003 Fluoroscopic guidance for spine or back muscle injection	40	35	$147.00	$24.59
62270 Spinal tap for diagnosis	34	31	$380.00	$60.96
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	28	28	$348.47	$91.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	26	26	$316.00	$64.68
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	17	15	$436.87	$85.24
36589 Removal of central venous catheter for infusion	15	14	$673.00	$112.22
76937 Ultrasonic guidance for blood vessel access	13	13	$71.58	$11.95
99213 Established patient office or other outpatient visit, typically 15 minutes	13	13	$201.81	$41.86
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	11	11	$91.07	$15.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	105	54	$215.00	$31.87
32555 Aspiration of fluid from chest cavity using imaging guidance	94	61	$531.00	$92.25
49083 Drainage of fluid from abdominal cavity using imaging guidance	71	19	$513.00	$87.65
77002 Fluoroscopic guidance for needle placement	65	57	$130.00	$23.02
20610 Aspiration and/or injection of fluid from large joint	58	46	$212.00	$35.55
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	41	40	$334.00	$90.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	32	$301.00	$64.14
36589 Removal of central venous catheter for infusion	26	24	$641.00	$111.17
77003 Fluoroscopic guidance for spine or back muscle injection	26	23	$140.00	$24.73
62270 Spinal tap for diagnosis	19	18	$352.47	$61.78
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	18	17	$416.00	$85.02
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	14	12	$87.00	$15.21
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$298.00	$81.70
76937 Ultrasonic guidance for blood vessel access	11	11	$68.00	$11.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	228	93	$210.70	$31.32
32555 Aspiration of fluid from chest cavity using imaging guidance	80	63	$524.75	$90.98
77002 Fluoroscopic guidance for needle placement	55	52	$128.25	$22.34
49083 Drainage of fluid from abdominal cavity using imaging guidance	52	21	$506.54	$86.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	45	43	$296.96	$62.92
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	41	41	$330.88	$88.84
20610 Aspiration and/or injection of fluid from large joint	40	37	$215.30	$36.66
99213 Established patient office or other outpatient visit, typically 15 minutes	35	30	$189.17	$40.73
77003 Fluoroscopic guidance for spine or back muscle injection	29	28	$137.83	$23.40
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	23	20	$84.91	$15.23
62270 Spinal tap for diagnosis	21	20	$356.33	$59.30
76937 Ultrasonic guidance for blood vessel access	18	18	$67.00	$11.62
99221 Initial hospital inpatient care per day, typically 30 minutes	15	15	$290.53	$80.41
36589 Removal of central venous catheter for infusion	14	13	$623.29	$106.11

Medical Specialties & State Licenses

CMS Verified: 2025-12-10

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License WI 1730

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.

Hospital & Practice Group Affiliations

Milwaukee Radiologists Ltd

10101 S 27th St, Franklin, WI 531327209

Phone: 4143254700

Milwaukee Radiologists Ltd

3111 W Rawson Ave, Franklin, WI 531329417

Phone: 4147612600

Milwaukee Radiologists Ltd

3111 W Rawson Ave, Franklin, WI 531329417

Phone: 4143254300

Milwaukee Radiologists Ltd

10101 S 27th St, Franklin, WI 531327209

Phone: 4148715800

Secondary Practice Locations

707 S University Ave

Beaver Dam, WI 539163027

Phone: 9208877181

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

29 Associated Practitioners

Dr. Timothy Workman , MD

Radiology - Diagnostic Radiology

NPI 1003890278

Doctor of Medicine (M.D.)

Dr. John Tomashek , MD

Radiology - Vascular & Interventional Radiology

NPI 1013999564

Doctor of Medicine (M.D.)

Dr. Djerrick Tan , MD

Radiology - Diagnostic Radiology

NPI 1124002654

Doctor of Medicine (M.D.)

Jocelyn Seppala , PA

Physician Assistant

NPI 1174113179

Physician Assistant

Dr. Shobha Desai , MD

Radiology - Diagnostic Radiology

NPI 1255315784

Doctor of Medicine (M.D.)

Dr. Paul Minor , MD

Radiology - Vascular & Interventional Radiology

NPI 1285655084

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events

📍

Updated Practice Location November 17, 2023

Registered at 10945 N PORT WASHINGTON RD STE 201, MEQUON, WI 530925078 (Tel: 2622923151)

📍

Updated Business Mailing Address November 17, 2023

Registered at 10945 N PORT WASHINGTON RD STE 201, MEQUON, WI 530925078 (Tel: 2622923151)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 17, 2023

Physician Assistant (License #1730 in WI)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 6150 WEST LAYTON AVENUE, GREENFIELD, WI 53220 (Tel: 4142824100)

📍

Updated Business Mailing Address July 08, 2007

Registered at 6150 WEST LAYTON AVENUE, GREENFIELD, WI 53220 (Tel: 4142824100)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as JEFFREY WILLIS, PA

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Radiology (License #1730023 in WI)

🟢

Initial NPI Registration & Enumeration July 16, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1558388520

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 16, 2006

Last Update: December 10, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

10945 N Port Washington Rd Ste 201

Mequon, WI 530925078

Phone: 2622923151

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.