Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1225084031 Individual Practitioner Male Practitioner

Dr. Willson Hartz , MD

Surgery • Chicago, IL

Professional Overview & Biography Verified Profile Summary

Dr. Willson Hartz, MD is a registered healthcare professional specializing in Surgery in Chicago, IL. Practice services are available at 676 N SAINT CLAIR ST under active NPI credentials.

Frequently performed procedures and clinical services include new patient outpatient office visit, established patient outpatient office visit, repair of groin hernia (5 years or older). Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

676 N Saint Clair St
Ste 1525

Chicago, IL 606112927

Telephone 3129515640
Fax 3122660478
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Chicago, IL

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 22.3 Yrs
State Avg: 27.3 Yrs
Regional Practice Density
579 Specialists

Practicing in Chicago, IL (1624 Statewide)

Telehealth Adoption Rate
4.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
75.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
67 67 $207.00 $122.35
99213 Established patient office or other outpatient visit, typically 15 minutes
57 47 $124.00 $98.96
49505 Repair of groin hernia (5 years or older)
23 23 $2608.70 $657.43
55520 Removal of spermatic cord growth
15 15 $2400.00 $267.93
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
13 13 $121.00 $60.68
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
12 12 $309.00 $183.00

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Blue Shield
01621690 (IL)

Practice Associates & Co-Workers

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

6 Associated Practitioners
NPI 1235126764

Doctor of Medicine (M.D.)

Dr. Melvin Goldstein , MD

Internal Medicine - Gastroenterology

NPI 1376531400

Doctor of Medicine (M.D.)

NPI 1629167903

Doctor of Medicine (M.D.)

Dr. Marshall Sparberg , MD

Internal Medicine - Gastroenterology

NPI 1700852571

Doctor of Medicine (M.D.)

Dr. Steven Stryker , MD

Colon & Rectal Surgery

NPI 1760448096

Doctor of Medicine (M.D.)

NPI 1821085358

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 676 N SAINT CLAIR ST, STE 1525, CHICAGO, IL 606112927 (Tel: 3129515640)

📍
Updated Business Mailing Address July 08, 2007

Registered at PO BOX 388320, CHICAGO, IL 606388320 (Tel: 7737678283)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as WILLSON HARTZ, M.D.

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

Surgery

🟢
Initial NPI Registration & Enumeration May 25, 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: 1225084031
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 25, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

Po Box 388320

Chicago, IL 606388320

Phone: 7737678283

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.