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DR. AJAY K CHALASANI MD
NPI 1487760385
Anesthesiology in O Fallon, MO

Active since August 22, 2006PECOS EnrolledAccepts Medicare Assignment
79.29/100
CMS Quality Rating
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY, O FALLON, MO 63368(800) 862-9980(314) 362-1185 Get Directions Write a Review

NPPES record last updated: April 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Apr 4, 2023 (3 updates tracked since 2023).

About Dr. Ajay K Chalasani Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. AJAY K CHALASANI MD (NPI 1487760385) is an individual anesthesiology provider in O Fallon, Missouri, licensed in Missouri (2002019228) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1487760385
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. AJAY K CHALASANICredential: MD
Location Address2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGYO Fallon, MO 63368-2205
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (800) 862-9980 · Fax (314) 362-1185
Phone(800) 862-9980
Fax(314) 362-1185
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateAugust 22, 2006
Last NPPES UpdateApril 15, 20253 updates tracked since enumeration
✔ NPI 1487760385 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MO · 2002019228
Definition
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.
2 PROGRESS POINT PKWY, O Fallon, MO 63368
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Other Identifiers 1

Medicaid208399212MO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ajay K Chalasani Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8527034529
PECOS Enrollment IDI20040909000828
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
12 services12 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260005
Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County
Emergency services

Ssm St Joseph Hospital West

Acute Care Hospitals · Lake Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260200
Location100 Medical PlazaLake Saint Louis, MO 63367 · St. Charles County
Emergency services Birthing friendly

Progress West Hospital

Acute Care Hospitals · O Fallon, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260219
Location2 Progress Point PkwyO Fallon, MO 63368 · St. Charles County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.46
Promoting Interoperability100
Improvement Activities40
Cost59.51

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHAKRAPOL LATTANAND MD
Anesthesiology
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY
O FALLON, MO 63368
St. Charles County (800) 862-9980
DR. JOHN JACOB LONG DO
Anesthesiology
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY
O FALLON, MO 63368
St. Charles County (800) 862-9980
MR. KYLE ALAN WOGTECH CRNA
Nurse Anesthetist, Certified Registered
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY
O FALLON, MO 63368
St. Charles County (800) 862-9980
MS. OLIVIA FAETH HASSELFELD PA
Physician Assistant
2 PROGRESS POINT PKWY, DIV IM MEDICAL ONCOLOGY
O FALLON, MO 63368
St. Charles County (800) 647-2098
DR. JESSICA LAUREN SANFORD MD
Anesthesiology
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY
O FALLON, MO 63368
St. Charles County (800) 862-9980
DR. BRANDON MICHAEL WUBBEN MD
Emergency Medicine
2 PROGRESS POINT PKWY, DEPT EMERGENCY MED
O FALLON, MO 63368
St. Charles County (314) 362-9123
MS. ROSE ELIZABETH SULLIVAN CRNA
Nurse Anesthetist, Certified Registered
2 PROGRESS POINT PKWY, DEPT ANESTHESIOLOGY
O FALLON, MO 63368
St. Charles County (800) 862-9980
DR. RANDI HASSELFELD BECKER MD
Emergency Medicine
2 PROGRESS POINT PKWY, DEPT EMERGENCY MED
O FALLON, MO 63368
St. Charles County (314) 362-9123

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ajay Chalasani's NPI number?

The NPI number for Ajay Chalasani is 1487760385. It was assigned to this individual provider in the NPPES registry on August 22, 2006.

Where is Ajay Chalasani located?

Ajay Chalasani practices at 2 Progress Point Pkwy Dept Anesthesiology, O Fallon, MO 63368. The listed phone number is (800) 862-9980.

What is Ajay Chalasani's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Ajay Chalasani enrolled in Medicare?

Yes. Ajay Chalasani is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Ajay Chalasani affiliated with any hospitals?

According to CMS data, Ajay Chalasani is affiliated with Ssm St Joseph Health Center, Ssm St Joseph Hospital West and Progress West Hospital.

When was this NPI record last updated?

The NPPES record for Ajay Chalasani was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.