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Active NPI 1487760385 Individual Practitioner Male Practitioner

Dr. Ajay K Chalasani , MD

Anesthesiology • O Fallon, MO

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ajay Chalasani, MD is a certified Anesthesiology practicing in O Fallon, MO. With approximately 27 years of clinical experience since completing medical education in 1999, Dr. Chalasani delivers high-quality medical care to the local community at 2 PROGRESS POINT PKWY.

Dr. Chalasani maintains professional affiliations with Washington University, Metro-West Anesthesia Group Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve), anesthesia for x-ray or radiation therapy, anesthesia for procedure on esophagus, stomach, and/or upper small 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

2 Progress Point Pkwy
Dept Anesthesiology

O Fallon, MO 633682205

Telephone 8008629980
Fax 3143621185
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

1999

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in O Fallon, MO

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
27 Yrs +8.4 yrs vs City Avg
City Avg: 18.6 Yrs
State Avg: 22.5 Yrs
Regional Practice Density
15 Specialists

Practicing in O Fallon, MO (1191 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
85.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Chalasani (27 Years) 27 Yrs
O Fallon Specialty Average (18.6 Years) 18.6 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
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)
12 12 $370.83 $52.40

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License MO 2002019228

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
208399212 (MO)

Hospital & Practice Group Affiliations

Metro-West Anesthesia Group Inc

1015 Bowles Ave, Fenton, MO 630262394

Phone: 6364962000

Metro-West Anesthesia Group Inc

300 1st Capitol Dr, Saint Charles, MO 633012844

Phone: 6369475000

Metro-West Anesthesia Group Inc

100 Medical Plz, Lake Saint Louis, MO 633671366

Phone: 6366255200

Washington University

12634 Olive Blvd, Saint Louis, MO 631416337

Phone: 3149968000

Practice Associates & Co-Workers

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

40 Associated Practitioners
Michelle Bloom , ACNP

Nurse Practitioner - Acute Care

NPI 1003230764
Mary Kinworthy , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003272642

Certified Registered Nurse Anesthetist

Kelsey Fogus , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003357849

Certified Registered Nurse Anesthetist

Claira Sousa , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003496225

Certified Registered Nurse Anesthetist

Aaron Weinzettel , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003834797

Certified Registered Nurse Anesthetist

Dr. Thomas Graetz , MD

Anesthesiology - Critical Care Medicine

NPI 1003942764

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

10 Historical Events
📍
Updated Business Mailing Address April 15, 2025

Registered at PO BOX 7412011, CHICAGO, IL 606742011 (Tel: 8008629980)

📍
Updated Business Mailing Address April 25, 2024

Registered at PO BOX 60352, SAINT LOUIS, MO 631600352 (Tel: 8008629980)

📍
Updated Practice Location April 04, 2023

Registered at 2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY, O FALLON, MO 633682205 (Tel: 8008629980)

📍
Updated Business Mailing Address April 04, 2023

Registered at 660 S EUCLID AVE, CB 8054, SAINT LOUIS, MO 631101010 (Tel: 8008629980)

NPI Profile Active April 29, 2008

NPI status registered as active in NPPES database

📍
Updated Practice Location April 29, 2008

Registered at 300 FIRST CAPITOL DR, ST CHARLES, MO 63301 (Tel: 3148211256)

📍
Updated Business Mailing Address April 29, 2008

Registered at 13523 BARRETT PARKWAY DR, STE 210, BALLWIN, MO 63021 (Tel: 3147752816)

👤
Provider Name / Credentials Updated April 29, 2008

Recorded as AJAY CHALASANI, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 29, 2008

Anesthesiology (License #2002019228 in MO)

🟢
Initial NPI Registration & Enumeration August 22, 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: 1487760385
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 22, 2006
Last Update: April 15, 2025
Sole Proprietor: No

Mailing Address

Po Box 7412011

Chicago, IL 606742011

Phone: 8008629980

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.