Regina Chiu, M.D.
Cardiovascular Disease Physician · O Fallon, IL
Regina Chiu, M.D. is a cardiovascular disease physician with a practice address in O Fallon, Illinois, and NPI 1043272693, issued on Apr 6, 2006. Check the license (Illinois 036118748, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Regina Chiu
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 036118748 IL
Self-reported in NPPES; status is on the state search - Practice location
- Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL 62269
- Phone
- (618) 233-6044
- Enumerated
- Apr 6, 2006
- Entity
- Type 1 · individual
Also registered at Three Saint Elizabeth Blvd Ste 2800
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Venkatesh Anjan, M.D.Cardiovascular Disease Physician1275799850
- Dana Baugher, FNPCardiovascular Disease Physician1497268965
- Thomas Cahill, MDCardiovascular Disease Physician1023128113
- Katherine Corbin, NP-CCardiovascular Disease Physician1710433768
- Pavan Gupta, MDHospitalist Physician1861519563
- Lori Beth Helmers, APRNInterventional Cardiology Physician1063457794
Verify Regina Chiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036118748Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.1 times the Medicare Part D claims of the average cardiovascular disease physician in 2024
6,606 Medicare Part D claims for 803 beneficiaries, against an average of 3,149 among the 19,556 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Metoprolol Succinate681 claims
- Amlodipine Besylate464 claims
- Atorvastatin Calcium445 claims
- Lisinopril411 claims
- Eliquis410 claims
- Furosemide341 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The Medicare quality score for 2023: 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
3 hospital and facility affiliations
- Hshs Holy Family Hospital IncGreenville, IL · Acute Care Hospitals3 of 5 stars
- Prairie Cardiovascular Consultants LtdO Fallon, IL
- St Elizabeths Hospital OF The Hospital Sisters OF The Third OrderO Fallon, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
16 cardiovascular disease physician records list a O Fallon practice address
They are 16 of the 1,077 NPPES records with a O Fallon practice address, and 992 cardiovascular disease physician records in Illinois.
All 16 in O Fallon → All 992 in Illinois → Every provider in O Fallon →
Other cardiovascular disease physician records in Illinois
- Nicolaos Abariotis, MDChicago, IL1417996257
- Tahir Abbasi, M.D.Hazel Crest, IL1255495701
- Ashraf Abourahma, M.D.Oak Lawn, IL1972561975
- Bruce Abramowitz, M.D.,F.A.C.C.Oak Lawn, IL1013918473
- Amjad Abualsuod, MDPeoria, IL1427346444
- Abdulrahman Abutaleb, M.D.Barrington, IL1891185609
- Karima AddetiaChicago, IL1740612993
- Keenan Adib, MDHinsdale, IL1790098804
- Alexander Adler, MDPeoria, IL1912929118
- Naveed Adoni, MDUrbana, IL1881644177
Common questions
What is Regina Chiu, M.D.'s NPI number?
Regina Chiu, M.D.'s National Provider Identifier (NPI) is 1043272693, issued on Apr 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Regina Chiu, M.D. located?
The NPPES record lists a practice address at Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL, 62269. Phone: (618) 233-6044. Providers update this record themselves, so call before visiting.
How can I verify Regina Chiu, M.D.'s license?
NPPES lists Illinois license number 036118748, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Regina Chiu, M.D. prescribe under Medicare Part D?
In 2024, Regina Chiu, M.D. had 6,606 Medicare Part D claims for 803 beneficiaries; the average among cardiovascular disease physician prescribers was 3,149. Part D covers Medicare prescriptions only.
What is Regina Chiu, M.D.'s Medicare quality score?
The 2023 MIPS final score is 94.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.