William Sauer, MD
Clinical Cardiac Electrophysiology Physician · Chicago, IL
William Sauer, MD is a clinical cardiac electrophysiology physician with a practice address in Chicago, Illinois, and NPI 1609827583, issued on May 15, 2006. Check the license (Illinois 036177896, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Sauer
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 036177896 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave, Chicago, IL 60637
- Phone
- (888) 824-0200
- Enumerated
- May 15, 2006
- Record last updated
- Jul 21, 2026
- Medicaid ID
- 07354312 CO
- Medicare enrollment
- Enrolled (PECOS I20190401000757); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 166 in Illinois → Look up another NPI →
Also registered at 5841 S Maryland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Sauer 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 036177896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
70 Medicare Part D claims for 39 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Flecainide Acetate13 claims
- Metoprolol Succinate13 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.
Industry payments in 2024: $47,020.68
84 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 3,167 providers of this specialty with any payment received $10,651.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Sauer among 166 clinical cardiac electrophysiology physician records in Illinois
William Sauer, MD is one of 166 clinical cardiac electrophysiology physician records with a practice address in Illinois. 92% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 60% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1999 · median 2003 among the 138 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Illinois
There are 166 clinical cardiac electrophysiology physician records in Illinois.
All 166 in Illinois → Every provider in Chicago → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Rishi Arora, MDChicago, IL 606371134199367
- Zaid AzizChicago, IL 606371952567125
- Andrew BeaserChicago, IL 606371720215387
- Ryan Burris, M.D.Chicago, IL 606371710305826
- Kelvin Chua, M.D.Chicago, IL 606371356792857
- Cevher Ozcan, M.D.Chicago, IL 606371760636146
- Corbin Rayfield, M.D.Chicago, IL 606371235585167
- Jeremy Treger, MD, PHDChicago, IL 606371730672965
Common questions
What is William Sauer, MD's NPI number?
William Sauer, MD's National Provider Identifier (NPI) is 1609827583, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Sauer, MD located?
The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (888) 824-0200. Providers update this record themselves, so call before visiting.
How can I verify William Sauer, MD's license?
NPPES lists Illinois license number 036177896, 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 Sauer, MD prescribe under Medicare Part D?
In 2024, William Sauer, MD had 70 Medicare Part D claims for 39 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. Part D covers Medicare prescriptions only.
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.