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Active NPI 1528486339 Individual Practitioner Female Practitioner

Dr. Grace Niziolek , MD

Surgery • Saint Louis, MO

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Grace Niziolek, MD is a certified Surgery practicing in Saint Louis, MO. With approximately 12 years of clinical experience since completing medical education in 2014, Dr. Niziolek delivers high-quality medical care to the local community at 1 BARNES JEWISH HOSPITAL PLZ.

Dr. Niziolek is affiliated with Washington University and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include follow-up hospital inpatient care per day, initial hospital care with straightforward or low-level medical decision making, if using time, at least, critical care, first. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Barnes Jewish Hospital Plz
Div Surg Accs

Saint Louis, MO 631101003

Telephone 3143625298
Fax 8888242176
Associated Practice Facility / Clinic
🏢 Midwest Lithotripsy, Llc Facility NPI 1831198639

Medicare Profile & Education

Medical School

Other

Graduation Year

2014

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Saint Louis, MO

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
12 Yrs -6.3 yrs vs City Avg
City Avg: 18.3 Yrs
State Avg: 26.1 Yrs
Regional Practice Density
246 Specialists

Practicing in Saint Louis, MO (766 Statewide)

Telehealth Adoption Rate
9.8% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
75.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Niziolek (12 Years) 12 Yrs
Saint Louis Specialty Average (18.3 Years) 18.3 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
99231 Follow-up hospital inpatient care per day, typically 15 minutes
166 81 $140.78 $47.50
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
47 47 $369.89 $125.44
99291 Critical care, first 30-74 minutes
41 25 $1156.34 $204.73
99221 Initial hospital inpatient care per day, typically 30 minutes
29 29 $220.00 $79.47

Medical Specialties & State Licenses

CMS Verified: 2024-09-10
Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MO 2023027659

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.

Anesthesiology - Critical Care Medicine

NUCC Taxonomy Code: 207LC0200X

State License MO 2023027659

An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Surgery - Surgical Critical Care

NUCC Taxonomy Code: 2086S0102X

State License MO 2023027659

A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
200126738 (MO)

Hospital & Practice Group Affiliations

Washington University

1 Barnes Jew Hosp Plz, Saint Louis, MO 631101003

Phone: 3147473000

Practice Associates & Co-Workers

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

40 Associated Practitioners
NPI 1013121243

Doctor of Medicine (M.D.)

NPI 1013477199

Doctor of Medicine (M.D.)

Dr. Mark Hoofnagle , MD

Surgery - Surgical Critical Care

NPI 1033344759

Doctor of Medicine (M.D.)

Linda Hornbeck , ANP

Nurse Practitioner

NPI 1043477581

Adult Nurse Practitioner

Dr. Rembrandt Vandruff , MD

Surgery - Trauma Surgery

NPI 1053815340

Doctor of Medicine (M.D.)

Christine Kuehnel , ACNP

Nurse Practitioner - Gerontology

NPI 1053906487

Career & Practice History Timeline

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

17 Historical Events
📍
Updated Business Mailing Address April 17, 2025

Registered at PO BOX 7412011, CHICAGO, IL 606742011 (Tel: 3143625298)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 17, 2025

Anesthesiology (License #2023027659 in MO)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 10, 2024

Anesthesiology (License #2023027659 in MO)

📍
Updated Business Mailing Address April 25, 2024

Registered at PO BOX 60352, SAINT LOUIS, MO 631600352 (Tel: 3143625298)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) November 01, 2023

Anesthesiology (License #2023027659 in MO)

📍
Updated Practice Location August 30, 2023

Registered at 1 BARNES JEWISH HOSPITAL PLZ, DIV SURG ACCS, SAINT LOUIS, MO 631101003 (Tel: 3143625298)

📍
Updated Business Mailing Address August 30, 2023

Registered at 660 S EUCLID AVE, MSC 8109-43-1160, SAINT LOUIS, MO 631101010 (Tel: 3143625298)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 30, 2023

Surgery (License #2023027659 in MO)

📍
Updated Practice Location August 17, 2022

Registered at 51 N 39TH ST, PHILADELPHIA, PA 19104 (Tel: 2156628819)

📍
Updated Business Mailing Address August 17, 2022

Registered at 51 N 39TH ST, PHILADELPHIA, PA 19104 (Tel: 2156628819)

👤
Provider Name / Credentials Updated August 17, 2022

Recorded as GRACE NIZIOLEK, MD

NPI Profile Active March 31, 2014

NPI status registered as active in NPPES database

📍
Updated Practice Location March 31, 2014

Registered at 231 ALBERT SABIN WAY, CINCINNATI, OH 452670558 (Tel: 5135585861)

📍
Updated Business Mailing Address March 31, 2014

Registered at 209 COBBLESTONE DR, CHAPEL HILL, NC 275168738 (Tel: 9192089446)

👤
Provider Name / Credentials Updated March 31, 2014

Recorded as GRACE MARTIN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 31, 2014

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration March 31, 2014

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1528486339
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 31, 2014
Last Update: April 17, 2025
Sole Proprietor: No

Mailing Address

Po Box 7412011

Chicago, IL 606742011

Phone: 3143625298

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.