Regina Y Chiu, MD - Medicare Cardiovascular Disease (cardiology) in O Fallon, IL

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Regina Y Chiu, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in O Fallon, Illinois. She went to Saint Louis University School Of Medicine and graduated in 1999 and has 26 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). She is a member of the group practice Prairie Cardiovascular Consultants Ltd, St Elizabeths Hospital Of The Hospital Sisters Of The Third Order, Hshs Holy Family Hospital Inc and her current practice location is Three Saint Elizabeth Blvd Ste 2800, O Fallon, Illinois. You can reach out to her office (for appointments etc.) via phone at (618) 233-6044.

Regina Y Chiu is licensed to practice in Illinois (license number 036118748) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1043272693.

Contact Information

Regina Y Chiu, 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 NameRegina Y Chiu
GenderFemale
SpecialityCardiovascular Disease (cardiology)
Experience26 Years
LocationThree Saint Elizabeth Blvd Ste 2800, O Fallon, Illinois
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Regina Y Chiu attended and graduated from Saint Louis University School Of Medicine in 1999
  NPI Data:
  • NPI Number: 1043272693
  • Provider Enumeration Date: 04/06/2006
  • Last Update Date: 12/20/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8224032586
  • Enrollment ID: I20070829000328

Medical Identifiers

Medical identifiers for Regina Y Chiu such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043272693NPI-NPPES
139035OtherHEALTH ALLIANCE
P00412776OtherRAILROAD MEDICARE
325776OtherGHP
325776OtherCMR
868703OtherHEALTHLINK
220367OtherMOBCBS MO
2270597OtherUHC
2501939OtherSECURE HORIZONS
577190OtherILSPARTA PTAN MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 036118748 (Illinois)Primary

Medical Facilities Affiliation

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

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Prairie Cardiovascular Consultants Ltd317343588090
St Elizabeths Hospital Of The Hospital Sisters Of The Third Order640675301117
Hshs Holy Family Hospital Inc751787934922

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. Regina Y Chiu allows following entities to bill medicare on her 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 NamePrairie Cardiovascular Consultants Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659539559
PECOS PAC ID: 3173435880
Enrollment ID: O20031111000337
Entity NameSt Elizabeths Hospital Of The Hospital Sisters Of The Third Order
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194736728
PECOS PAC ID: 6406753011
Enrollment ID: O20031212000629
Entity NameHshs Holy Family Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205850690
PECOS PAC ID: 7517879349
Enrollment ID: O20040216000198

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. Regina Y Chiu 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
Regina Y Chiu, MD
Three Saint Elizabeth Blvd Ste 2800,
O Fallon, IL 62269-1282

Ph: (618) 233-6044		Regina Y Chiu, 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

Thomas B. Cahill Jr., 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
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    
Muhammad Adil Sheikh, M.D.
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 3 Saint Elizabeth Blvd Ste 1800, O Fallon, IL 62269
Phone: 618-233-6044    

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.

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