Thomas B Cahill Jr, MD - Medicare Cardiovascular Disease (cardiology) in O Fallon, IL

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Thomas B Cahill Jr, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in O Fallon, Illinois. He went to Saint Louis University School Of Medicine and graduated in 1978 and has 46 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Hshs Holy Family Hospital Inc, Prairie Cardiovascular Consultants Ltd, St Josephs Hospital Breese Of The Hospital Sisters Of The Third Order, St. Elizabeth's Hospital Of The Hospital Sisters Of The Third Order Of and his current practice location is Three Saint Elizabeth Blvd Ste 2800, O Fallon, Illinois. You can reach out to his office (for appointments etc.) via phone at (618) 233-6044.

Thomas B Cahill Jr is licensed to practice in Illinois (license number 036-060357) 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 1023128113.

Contact Information

Thomas B Cahill Jr, MD
Three Saint Elizabeth Blvd Ste 2800,
O Fallon, IL 62269-1282
(618) 233-6044
(833) 973-4218

Map and Direction




Physician's Profile

Full NameThomas B Cahill Jr
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience46 Years
LocationThree Saint Elizabeth Blvd Ste 2800, O Fallon, Illinois
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:
  • Thomas B Cahill Jr attended and graduated from Saint Louis University School Of Medicine in 1978
  NPI Data:
  • NPI Number: 1023128113
  • Provider Enumeration Date: 08/30/2006
  • Last Update Date: 12/21/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 0143241703
  • Enrollment ID: I20051209000672

Medical Identifiers

Medical identifiers for Thomas B Cahill Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023128113NPI-NPPES
036060357MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 036-060357 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hshs St Elizabeth's HospitalO fallon, ILHospital
St Josephs HospitalBreese, ILHospital
Sparta Community HospitalSparta, ILHospital
Hshs Holy Family Hospital IncGreenville, ILHospital
St Johns HospitalSpringfield, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hshs Holy Family Hospital Inc751787934922
Prairie Cardiovascular Consultants Ltd317343588088
St Josephs Hospital Breese Of The Hospital Sisters Of The Third Order963806489229
St. Elizabeth's Hospital Of The Hospital Sisters Of The Third Order Of640675301115

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. Thomas B Cahill Jr allows following entities to bill medicare on his behalf.
Entity NamePrairie Cardiovascular Consultants Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982714218
PECOS PAC ID: 3173435880
Enrollment ID: O20031103000090
Entity NameSt. Elizabeth's Hospital Of The Hospital Sisters Of The Third Order Of
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194736728
PECOS PAC ID: 6406753011
Enrollment ID: O20031212000629
Entity NameSarah Bush Lincoln Health Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669564662
PECOS PAC ID: 5092614867
Enrollment ID: O20031231000478
Entity NameHshs Holy Family Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205850690
PECOS PAC ID: 7517879349
Enrollment ID: O20040216000198
Entity NameSt Josephs Hospital Breese Of The Hospital Sisters Of The Third Order
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457319154
PECOS PAC ID: 9638064892
Enrollment ID: O20040217000493
Entity NameSt. Josephs Hospital Of The Hospital Sisters Of The Third Order Of St
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447352323
PECOS PAC ID: 4183617517
Enrollment ID: O20040403000043

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. Thomas B Cahill Jr 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
Thomas B Cahill Jr, MD
Three Saint Elizabeth Blvd Ste 2800,
O Fallon, IL 62269-1282

Ph: (618) 233-6044		Thomas B Cahill Jr, MD
Three Saint Elizabeth Blvd Ste 2800,
O Fallon, IL 62269-1282

Ph: (618) 233-6044

Reviews and Comments


Internal Medicine Doctors in O Fallon, IL

Regina Y Chiu, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Lori Beth Helmers, APRN
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Dr. Scott Benjamin Marrus, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218
Vinaya Mulkareddy, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3 Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-769-0777
Isaac Tran, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1 Saint Elizabeth Blvd, O Fallon, IL 62269
Phone: 618-234-2120    
Atul Shah, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
Phone: 618-233-6044    Fax: 833-973-4218

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).

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