Active NPI 1942712310 Individual Practitioner Female Practitioner

Shannon Marie Williams , NP-C, FNP

Nurse Practitioner • Belleville, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Shannon Williams, NP-C, FNP is a certified Nurse Practitioner practicing in Belleville, IL. With approximately 10 years of clinical experience since completing medical education in 2016, Shannon Williams delivers high-quality medical care to the local community at 4550 MEMORIAL DR STE 280.

Shannon Williams is affiliated with Fairview Heights Medical Group Sc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, injection of trigger points. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4550 Memorial Dr Ste 280

Belleville, IL 622265372

Telephone 6187673235

Medicare Profile & Education

Medical School

Other

Graduation Year

2016

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Belleville, IL

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

10 Yrs +1.6 yrs vs City Avg

City Avg: 8.4 Yrs

State Avg: 10.4 Yrs

Regional Practice Density

45 Specialists

Practicing in Belleville, IL (4929 Statewide)

Telehealth Adoption Rate

13.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

43.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williams (10 Years) 10 Yrs

Belleville Specialty Average (8.4 Years) 8.4 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
99213 Established patient office or other outpatient visit, typically 15 minutes	77	66	$142.03	$74.33
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	70	64	$88.89	$46.47
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	70	70	$181.87	$93.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	39	39	$218.41	$139.02
99202 New patient office or other outpatient visit, typically 20 minutes	12	12	$118.50	$60.49
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	11	11	$178.45	$108.06

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	83	70	$80.13	$46.41
99213 Established patient office or other outpatient visit, typically 15 minutes	83	75	$129.37	$75.30
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	56	56	$185.70	$91.75
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	48	48	$216.31	$136.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	21	$185.71	$106.46

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	74	74	$146.78	$95.08
99213 Established patient office or other outpatient visit, typically 15 minutes	70	60	$108.00	$75.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	66	58	$75.45	$47.74
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	57	57	$196.09	$141.31
99202 New patient office or other outpatient visit, typically 20 minutes	17	17	$106.65	$61.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	125	53	$185.94	$78.10
20553 Injection of trigger points, 3 or more muscles	120	19	$204.08	$54.06
20551 Injection into tendon at attachment to bone or muscle	108	14	$184.23	$33.20
20552 Injections of trigger points in 1 or 2 muscles	56	12	$167.64	$34.34
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	53	11	$274.12	$49.44
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	36	36	$210.85	$142.50
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	32	31	$202.90	$96.02
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	27	25	$83.39	$46.59
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$165.73	$104.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7320 Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg	2,000	13	$24.00	$16.90
20611 Aspiration and/or injection of fluid large joint using ultrasound guidance	154	22	$400.00	$82.29
20553 Injection of trigger points, 3 or more muscles	99	18	$125.00	$55.92
99213 Established patient office or other outpatient visit, typically 15 minutes	79	13	$150.00	$64.51
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$175.00	$92.73

Medical Specialties & State Licenses

CMS Verified: 2025-09-19

Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License IL 209015851

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner

NUCC Taxonomy Code: 363L00000X

State License MO 2017001325

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

State License IL 209015851

Definition to come...

Hospital & Practice Group Affiliations

Fairview Heights Medical Group Sc

4550 Memorial Dr, Belleville, IL 622265372

Phone: 6187673235

Fairview Heights Medical Group Sc

1 Memorial Dr, Alton, IL 620026722

Phone: 6184637240

Secondary Practice Locations

9515 Holy Cross Ln Ste 175

Breese, IL 622303618

Phone: 6185268430

Practice Associates & Co-Workers

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

12 Associated Practitioners

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Dr. Richard Hehmann , MD

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Doctor of Medicine (M.D.)

Dr. Shabnam Darbari , MD

Internal Medicine - Nephrology

NPI 1225026016

Doctor of Medicine (M.D.)

Cynthia Whitcher , NP

Nurse Practitioner - Acute Care

NPI 1275827917

Nurse Practitioner

Rebecca Carpenter , ANP

Nurse Practitioner

NPI 1336537919

Adult Nurse Practitioner

Taylor Reno , FNP-C

Nurse Practitioner

NPI 1366192908

Family Nurse Practitioner (Certified)

Career & Practice History Timeline

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

15 Historical Events

📍

Updated Practice Location September 19, 2025

Registered at 4550 MEMORIAL DR STE 280, BELLEVILLE, IL 622265372 (Tel: 6187673235)

📍

Updated Practice Location December 17, 2024

Registered at 9515 HOLY CROSS LN STE 175, BREESE, IL 622303618 (Tel: 6185268430)

📍

Updated Business Mailing Address December 17, 2024

Registered at PO BOX 959203, SAINT LOUIS, MO 631952314 (Tel: 6187673235)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 17, 2024

Nurse Practitioner (License #2017001325 in MO)

📍

Updated Practice Location September 08, 2021

Registered at 2821 N BALLAS RD STE 110, SAINT LOUIS, MO 631312314 (Tel: 3146289000)

📍

Updated Business Mailing Address September 08, 2021

Registered at 2821 N BALLAS RD STE 110, SAINT LOUIS, MO 631312314 (Tel: 3146289000)

📍

Updated Practice Location March 17, 2020

Registered at 124 REGENCY PARK STE 7, O FALLON, IL 622691994 (Tel: 6186223322)

📍

Updated Business Mailing Address March 17, 2020

Registered at 124 REGENCY PARK STE 7, O FALLON, IL 622691994 (Tel: 6186223322)

👤

Provider Name / Credentials Updated March 17, 2020

Recorded as SHANNON WILLIAMS, NP-C, FNP

✅

NPI Profile Active October 25, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location October 25, 2017

Registered at 311 W LINCOLN ST STE 100, BELLEVILLE, IL 622201902 (Tel: 6182333661)

📍

Updated Business Mailing Address October 25, 2017

Registered at 311 W LINCOLN ST STE 100, BELLEVILLE, IL 622201902 (Tel: 6182333661)

👤

Provider Name / Credentials Updated October 25, 2017

Recorded as SHANNON WILLIAMS, NP-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 25, 2017

Nurse Practitioner (License #209015851 in IL)

🟢

Initial NPI Registration & Enumeration October 25, 2017

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: 1942712310

Entity Type:

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

Enumeration Date: October 25, 2017

Last Update: September 19, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 959203

Saint Louis, MO 631952314

Phone: 6187673235

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.