John A. Kefer, M.D.
Cardiovascular Disease Physician · Geneva, IL
John A. Kefer, M.D. is a cardiovascular disease physician with a practice address in Geneva, Illinois, and NPI 1477549103, issued on Sep 27, 2005. Check the license (Illinois 036050847, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John A. Kefer
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 036050847 IL
Self-reported in NPPES; status is on the state search - Practice location
- 351 Delnor Dr, Geneva, IL 60134
- Phone
- (630) 232-0280
- Enumerated
- Sep 27, 2005
- Record last updated
- Jan 31, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (630) 232-3895
- Medicaid ID
- 036050847 IL
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 351 Delnor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chintan Desai, M.D.Cardiovascular Disease Physician1326201898
- Sheri Dewan, MDNeurological Surgery Physician1497972640
Verify John A. Kefer 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 036050847Check 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
26 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
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.
John A. Kefer among 1,073 cardiovascular disease physician records in Illinois
John A. Kefer, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2018 · 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).
13 cardiovascular disease physician records list a practice address in Geneva
They are 13 of the 1,023 NPPES records with a practice address in Geneva, and 1,073 cardiovascular disease physician records in Illinois.
All 1,073 in Illinois → Every provider in Geneva → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Chintan Desai, M.D.Geneva, IL 601341326201898
- Nimit Desai, M.D.Geneva, IL 601341467866475
- Nicholas Furiasse, M.D.Geneva, IL 601341154577260
- Kunal Karmali, M.D.Geneva, IL 601341982808820
- Terry Labarre, M.D.Geneva, IL 601341386631018
- William Mackin, M.D.Geneva, IL 601341215924949
- Ivan Mugisha, MDGeneva, IL 601341326420522
- Jay PanditGeneva, IL 601341700104049
Common questions
What is John A. Kefer, M.D.'s NPI number?
John A. Kefer, M.D.'s National Provider Identifier (NPI) is 1477549103, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John A. Kefer, M.D. located?
The NPPES record lists a practice address at 351 Delnor Dr, Geneva, IL, 60134. Phone: (630) 232-0280. Providers update this record themselves, so call before visiting.
How can I verify John A. Kefer, M.D.'s license?
NPPES lists Illinois license number 036050847, 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 John A. Kefer, M.D. prescribe under Medicare Part D?
In 2024, John A. Kefer, M.D. had 26 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.