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Active NPI 1457464679 Individual Practitioner Male Practitioner

William I Boswell , PA, AA

Anesthesiologist Assistant • Madison, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

William Boswell, PA, AA is a certified Anesthesiologist Assistant practicing in Madison, WI. With approximately 33 years of clinical experience since graduating from Emory University School Of Medicine in 1993, William Boswell delivers high-quality medical care to the local community at 600 HIGHLAND AVE.

William Boswell maintains professional affiliations with Physician Anesthesia Services Pc, Ozark Anesthesia Associates Inc, University Of Wisconsin Medical Foundation Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope, anesthesia for procedure on large bowel using an endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

600 Highland Ave

Madison, WI 537920001

Telephone 6082638100
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Emory University School Of Medicine

Graduation Year

1993

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiologist Assistant in Madison, WI

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
33 Yrs +24.1 yrs vs City Avg
City Avg: 8.9 Yrs
State Avg: 9.2 Yrs
Regional Practice Density
73 Specialists

Practicing in Madison, WI (264 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
91.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Boswell (33 Years) 33 Yrs
Madison Specialty Average (8.9 Years) 8.9 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
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope
91 83 $1038.79 $92.31
00732 Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope
33 33 $1321.67 $121.04
00811 Anesthesia for procedure on large bowel using an endoscope
26 25 $885.12 $79.36

Medical Specialties & State Licenses

CMS Verified: 2026-02-03
Anesthesiologist Assistant Primary Specialty

NUCC Taxonomy Code: 367H00000X

State License WI 615-17

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

Anesthesiologist Assistant

NUCC Taxonomy Code: 367H00000X

State License CO ANT.0000069

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

Anesthesiologist Assistant

NUCC Taxonomy Code: 367H00000X

State License GA 002435

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

Hospital & Practice Group Affiliations

Us Anesthesia Partners Of Colorado Inc

501 E Hampden Ave, Englewood, CO 801132702

Phone: 3034383999

University Of Wisconsin Medical Foundation Inc

600 Highland Ave, Madison, WI 537920001

Phone: 6082636400

Ozark Anesthesia Associates Inc

3801 S National Ave, Springfield, MO 658075210

Phone: 4172696000

Poudre Valley Medical Group Llc

1400 E Boulder St, Colorado Springs, CO 809095533

Phone: 7193656999

Physician Anesthesia Services Pc

8300 W 38th Ave, Wheat Ridge, CO 800336005

Phone: 3034258504

Secondary Practice Locations

1400 E Boulder St

Colorado Springs, CO 809095533

Phone: 7208480000

380 Hospital Dr, Ste 410

Macon, GA 312178001

Phone: 4787465644

Practice Associates & Co-Workers

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

40 Associated Practitioners
NPI 1003173543

Doctor of Medicine (M.D.)

John Henry Harrison

Anesthesiology

NPI 1003236225
Laura Wyatt , AA-C

Anesthesiologist Assistant

NPI 1013358308

AAC

Ashton Mieritz , CRNA

Nurse Anesthetist, Certified Registered

NPI 1013787449

Certified Registered Nurse Anesthetist

NPI 1013983527

Doctor of Medicine (M.D.)

Carlos Anani

Nurse Anesthetist, Certified Registered

NPI 1033003090

Career & Practice History Timeline

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

12 Historical Events
📍
Updated Practice Location February 03, 2026

Registered at 600 HIGHLAND AVE, MADISON, WI 537920001 (Tel: 6082638100)

📍
Updated Business Mailing Address February 03, 2026

Registered at 7974 UW HEALTH CT, MIDDLETON, WI 535625531

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 03, 2026

Anesthesiologist Assistant (License #ANT.0000069 in CO)

📍
Updated Practice Location April 03, 2023

Registered at 1400 E BOULDER ST, COLORADO SPRINGS, CO 809095533 (Tel: 7208480000)

📍
Updated Business Mailing Address April 03, 2023

Registered at PO BOX 110429, AURORA, CO 800420429

📍
Updated Business Mailing Address February 02, 2021

Registered at 19179 W 88TH DR, ARVADA, CO 800077303 (Tel: 3034198732)

NPI Profile Active October 14, 2009

NPI status registered as active in NPPES database

📍
Updated Practice Location October 14, 2009

Registered at 380 HOSPITAL DR, STE 410, MACON, GA 312178001 (Tel: 4787465644)

📍
Updated Business Mailing Address October 14, 2009

Registered at PO BOX 2564, MACON, GA 312032564 (Tel: 4787465644)

👤
Provider Name / Credentials Updated October 14, 2009

Recorded as WILLIAM BOSWELL, PA/AA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 14, 2009

Anesthesiologist Assistant (License #002435 in GA)

🟢
Initial NPI Registration & Enumeration August 15, 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: 1457464679
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 15, 2006
Last Update: February 03, 2026
Sole Proprietor: No

Mailing Address

7974 Uw Health Ct

Middleton, WI 535625531

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.