Ajay K Chalasani, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

2002019228 Issued in MO

Practice address

2 Progress Point Pkwy
Dept Anesthesiology
O Fallon, MO 63368-2205

Phone

(800) 862-9980

Fax

(314) 362-1185

NPI assigned

Aug 22, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Anesthesiology

Education

Other, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Metro-West Anesthesia Group IncGroup PAC ID 2163329921, 204 clinicians

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• SSM St Joseph Hospital West Hospital, Lake Saint Louis, MO, CCN 260200
• SSM St Joseph Health Center Hospital, Saint Charles, MO, CCN 260005

Merit-based Incentive Payment System (MIPS)

Final score

84.2 of 100Reported as group

Quality

71.6

Promoting interoperability

100

Improvement activities

40

Cost

75.75

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Metro-West Anesthesia Group Inc

  • Anesthesiology Physician
  • Chesterfield, MO
  • NPI 1245427335
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1528005642
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• SSM Health Care St. Louis

  • General Acute Care Hospital
  • Saint Charles, MO
  • NPI 1467521146
  Care Compare affiliation
• SSM Health Care St. Louis

  • General Acute Care Hospital
  • Lake St Louis, MO
  • NPI 1871665380
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1156204800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744675200000",
    "number": "1487760385",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "800-862-9980",
            "fax_number": "314-362-1185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2 PROGRESS POINT PKWY",
            "address_2": "DEPT ANESTHESIOLOGY",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682205",
            "telephone_number": "800-862-9980",
            "fax_number": "314-362-1185"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHALASANI",
        "first_name": "AJAY",
        "middle_name": "K",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-22",
        "last_updated": "2025-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MO",
            "license": "2002019228",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "208399212",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "2 Progress Point Pkwy",
            "address_2": "Dept Anesthesiology",
            "city": "O Fallon",
            "state": "MO",
            "country_code": "US",
            "postal_code": "633682205",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Emily Cepicky
• Tyler Cerutti, PHARMD
• Bryan Chac, DPT
• Jasmine Sodhi Chadha, OD
• Salim Chahin, MD
• Nikki D. Chambless, M.A., LPC
• Cynthia G Chambliss, SLP
• Courtney Grace Chapman, DMD
• Janet S. Chartrand, RN, LCSW. LPC, NCC
• Pin-Wen Chen, MD

• Anesthesiology Physician in O Fallon, MO
• Providers in O Fallon, MO by specialty
• Anesthesiology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.