Dr Ajay K Chalasani, MD - Medicare Anesthesiology in O Fallon, MO

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Dr Ajay K Chalasani, MD is a medicare enrolled "Anesthesiology" physician in O Fallon, Missouri. He graduated from medical school in 1999 and has 25 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Metro-west Anesthesia Group Inc, Washington University and his current practice location is 2 Progress Point Pkwy, Dept Anesthesiology, O Fallon, Missouri. You can reach out to his office (for appointments etc.) via phone at (800) 862-9980.

Dr Ajay K Chalasani is licensed to practice in Missouri (license number 2002019228) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1487760385.

Contact Information

Dr Ajay K Chalasani, MD
2 Progress Point Pkwy, Dept Anesthesiology,
O Fallon, MO 63368-2205
(800) 862-9980
(314) 362-1185

Map and Direction




Physician's Profile

Full NameDr Ajay K Chalasani
GenderMale
SpecialityAnesthesiology
Experience25 Years
Location2 Progress Point Pkwy, O Fallon, Missouri
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Ajay K Chalasani graduated from medical school in 1999
  NPI Data:
  • NPI Number: 1487760385
  • Provider Enumeration Date: 08/22/2006
  • Last Update Date: 04/10/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 8527034529
  • Enrollment ID: I20040909000828

Medical Identifiers

Medical identifiers for Dr Ajay K Chalasani such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1487760385NPI-NPPES
208399212MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 2002019228 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Progress West HospitalO fallon, MOHospital
Ssm St Joseph Hospital WestLake saint louis, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Metro-west Anesthesia Group Inc2163329921157
Washington University98300087702506

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Ajay K Chalasani allows following entities to bill medicare on his behalf.
Entity NameMetro-west Anesthesia Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245427335
PECOS PAC ID: 2163329921
Enrollment ID: O20031219000779
Entity NameWashington University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528005642
PECOS PAC ID: 9830008770
Enrollment ID: O20040129000651

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Ajay K Chalasani is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Ajay K Chalasani, MD
Po Box 60352,
Saint Louis, MO 63160-0352

Ph: (800) 862-9980		Dr Ajay K Chalasani, MD
2 Progress Point Pkwy, Dept Anesthesiology,
O Fallon, MO 63368-2205

Ph: (800) 862-9980

Reviews and Comments


Anesthesiology Doctors in O Fallon, MO

Dr. Chakrapol Lattanand, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Pkwy, Dept Anesthesiology, O Fallon, MO 63368
Phone: 800-862-9980    Fax: 314-362-1185
Dr. John Jacob Long, DO
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Pkwy, Dept Anesthesiology, O Fallon, MO 63368
Phone: 800-862-9980    Fax: 314-362-1185
Dr. Sunita Dharmavarapu, MD
Anesthesiology
Medicare: Medicare Enrolled
Practice Location: 2 Progress Point Ct, O Fallon, MO 63368
Phone: 314-286-1050    Fax: 314-344-1138
Dr. David A Friedman, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Ct, O Fallon, MO 63368
Phone: 636-344-1170    Fax: 636-344-1138
Vivek K Manchanda, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 4122 Keaton Crossing Blvd, Suite 102, O Fallon, MO 63368
Phone: 636-329-9077    Fax: 636-329-9076
Dr. Jessica Lauren Sanford, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Pkwy, Dept Anesthesiology, O Fallon, MO 63368
Phone: 800-862-9980    Fax: 314-362-1185
Dr. Isabella Rossi Riordan, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Pkwy, Dept Anesthesiology, O Fallon, MO 63368
Phone: 800-862-9980    Fax: 314-362-1185

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.