Cornelius Edward Whalen, M.D.
Family Medicine Physician · Charleston, IL
Cornelius Edward Whalen, M.D. is a family medicine physician with a practice address in Charleston, Illinois, and NPI 1184774564, issued on Jan 10, 2007. Check the license (Illinois 036059817, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Cornelius Edward Whalen
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036059817 IL
Self-reported in NPPES; status is on the state search - Practice location
- 925 18TH St, Charleston, IL 61920
- Phone
- (217) 345-2123
- Enumerated
- Jan 10, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (217) 345-3907
- Medicaid ID
- 036059817 IL
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Cornelius Edward Whalen 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 036059817Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average family medicine physician in 2024
1,498 Medicare Part D claims for 191 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium101 claims
- Metformin Hcl81 claims
- Amlodipine Besylate72 claims
- Levothyroxine Sodium65 claims
- Omeprazole60 claims
- Losartan Potassium55 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.
Cornelius Edward Whalen among 6,215 family medicine physician records in Illinois
Cornelius Edward Whalen, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Charleston
They are 12 of the 221 NPPES records with a practice address in Charleston, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Charleston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joan Alvarado, MDCharleston, IL 619201033430624
- Renu Bajaj, MDCharleston, IL 619201700996568
- Sheila Baker, M.D.Charleston, IL 619201891786950
- Mark Emenecker, D.O.Charleston, IL 619201285740571
- Todd Garner, DOCharleston, IL 619201871664292
- John Hutchinson, MDCharleston, IL 619201497899835
- Jason Jerabek, DOCharleston, IL 619201396853008
- Leland McNeill, M.D.Charleston, IL 619201891897773
Common questions
What is Cornelius Edward Whalen, M.D.'s NPI number?
Cornelius Edward Whalen, M.D.'s National Provider Identifier (NPI) is 1184774564, issued on Jan 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Cornelius Edward Whalen, M.D. located?
The NPPES record lists a practice address at 925 18TH St, Charleston, IL, 61920. Phone: (217) 345-2123. Providers update this record themselves, so call before visiting.
How can I verify Cornelius Edward Whalen, M.D.'s license?
NPPES lists Illinois license number 036059817, 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 Cornelius Edward Whalen, M.D. prescribe under Medicare Part D?
In 2024, Cornelius Edward Whalen, M.D. had 1,498 Medicare Part D claims for 191 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.