NPPES file of Aug 9, 2026

William R. Reilly, M.D.

Interventional Cardiology Physician · Waterloo, IL

William R. Reilly, M.D. is an interventional cardiology physician with a practice address in Waterloo, Illinois, and NPI 1205846516, issued on Aug 9, 2006. Check the license (Illinois 036-065044, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1205846516
Name
William R. Reilly
Credential
M.D.
Primary taxonomy
Interventional Cardiology Physician 207RI0011X
License numbers
036-065044 IL
036065044 IL
R2F41 MO
Self-reported in NPPES; status is on the state search
Practice location
509 Hamacher St Ste 204, Waterloo, IL 62298
Phone
(618) 939-4200
Enumerated
Aug 9, 2006
Record last updated
Jan 31, 2023
Fax
(618) 939-4256
Medicaid ID
202480307 MO
Medicare enrollment
Enrolled (PECOS I20100820000894); accepts Medicare assignment
Medical or professional school
Southern Illinois University School Of Medicine, 1980
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify William R. Reilly in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036-065044
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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94% fewer Medicare Part D claims than the average interventional cardiology physician in 2024

200 Medicare Part D claims for 50 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. William Reilly200
  2. Specialty average3,179

Most prescribed

  1. Clopidogrel35 claims
  2. Metoprolol Succinate22 claims
  3. Eliquis17 claims
  4. Rosuvastatin Calcium17 claims
  5. Losartan Potassium16 claims
  6. Atorvastatin Calcium13 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score53.8
  2. Costout of 100 · 30%56.5
  3. Promoting interoperabilityout of 100 · 25%91.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $236.15

4 payments; by number, the most common kind was food and beverage; the largest payer was Biotronik Inc. The 6,394 providers of this specialty with any payment received $7,062.29 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Reilly$236.15
  2. Specialty average$7,062.29

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Deaconess Illinois Specialty Clinic, Inc.Saint Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William R. Reilly among 320 interventional cardiology physician records in Illinois

William R. Reilly, M.D. is one of 320 interventional cardiology physician records with a practice address in Illinois. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 53% newer
  • In a Medicare fileYes · 96% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated1980 · median 2002 among the 278 with a school on file
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Interventional Cardiology Physician providers in Illinois

There are 320 interventional cardiology physician records in Illinois.

The 8 interventional cardiology physician records with the nearest ZIP codes

  1. Jeffrey Cook, M.D.Quincy, IL 623011952353518
  2. Steven Krause, D.O.Quincy, IL 623011386628519
  3. Adam RafiQuincy, IL 623011356640825
  4. Venkatesh Anjan, M.D.O Fallon, IL 622691275799850
  5. Hasan RehmanO Fallon, IL 622691386028124
  6. Shiyam Satwani, M.DO Fallon, IL 622691407067184
  7. Tanya Sharma, M.B.B.S.Shiloh, IL 622691508426057
  8. Muhammad Sheikh, M.D.O Fallon, IL 622691194107524

Common questions

What is William R. Reilly, M.D.'s NPI number?

William R. Reilly, M.D.'s National Provider Identifier (NPI) is 1205846516, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William R. Reilly, M.D. located?

The NPPES record lists a practice address at 509 Hamacher St Ste 204, Waterloo, IL, 62298. Phone: (618) 939-4200. Providers update this record themselves, so call before visiting.

How can I verify William R. Reilly, M.D.'s license?

NPPES lists Illinois license number 036-065044, 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 William R. Reilly, M.D. prescribe under Medicare Part D?

In 2024, William R. Reilly, M.D. had 200 Medicare Part D claims for 50 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. Part D covers Medicare prescriptions only.

What is William R. Reilly, M.D.'s MIPS final score?

The 2023 MIPS final score is 73.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.