Roger A. Billhardt, MD
Cardiovascular Disease Physician · Chicago, IL
Roger A. Billhardt, MD is a cardiovascular disease physician with a practice address in Chicago, Illinois, and NPI 1265515837, issued on Oct 24, 2006. Check the license (Illinois 3653546, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Roger A. Billhardt
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 3653546 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1725 W Harrison, Chicago, IL 60612
- Phone
- (312) 563-3233
- Enumerated
- Oct 24, 2006
- Record last updated
- Sep 28, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (312) 563-3235
- Medicaid ID
- 0360535461 IL
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 1725 W Harrison
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dragan Djordjevic, MDInternal Medicine Physician1518992783
- Alexander Doolas, M.D.Surgery Physician1487729257
- Carl Eybel, MDCardiovascular Disease Physician1285717850
- Jacob Fox, MDNeurology Physician1841242716
Verify Roger A. Billhardt 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 3653546Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
24 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Roger A. Billhardt among 1,073 cardiovascular disease physician records in Illinois
Roger A. Billhardt, MD is one of 1,073 cardiovascular disease physician records with a practice address in Illinois. 85% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2007 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Illinois
There are 1,073 cardiovascular disease physician records in Illinois.
All 1,073 in Illinois → Every provider in Chicago → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- James Calvin, M.D.Chicago, IL 606121023041522
- Quinn Capers, M.D.Chicago, IL 606121053312413
- Rami Doukky, M.D.Chicago, IL 606121093761181
- Maan El Khadra, MDChicago, IL 606121316946700
- Philip Liebson, M.D.Chicago, IL 606121083630370
- Victor Pelaez, MDChicago, IL 606121235156266
- Jalees Rehman, M.D.Chicago, IL 606121396709135
- Cheryl Rucker-Whitaker, MD, MPHChicago, IL 606121821028622
Common questions
What is Roger A. Billhardt, MD's NPI number?
Roger A. Billhardt, MD's National Provider Identifier (NPI) is 1265515837, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roger A. Billhardt, MD located?
The NPPES record lists a practice address at 1725 W Harrison, Chicago, IL, 60612. Phone: (312) 563-3233. Providers update this record themselves, so call before visiting.
How can I verify Roger A. Billhardt, MD's license?
NPPES lists Illinois license number 3653546, 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 Roger A. Billhardt, MD prescribe under Medicare Part D?
In 2024, Roger A. Billhardt, MD had 24 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. 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.