DR. JOHN A KEFER M.D.
NPI 1477549103
Internal Medicine - Cardiovascular Disease in Geneva, IL
NPI Status: Active since September 27, 2005
Contact Information
351 DELNOR DR
GENEVA, IL
ZIP 60134
Phone: (630) 232-0280
Fax: (630) 232-3895
- Individual
- Male
- Internal Medicine
- Cardiovascular Disease
- PECOS Enrolled
About JOHN KEFER
This page provides the complete NPI Profile along with additional information for John Kefer, an internist established in Geneva, Illinois with a medical specialization in Internal Medicine, focusing in cardiovascular disease . The healthcare provider is registered in the NPI registry with number 1477549103 assigned on September 2005. The practitioner's primary taxonomy code is 207RC0000X with license number 036050847 (IL). The provider is registered as an individual and his NPI record was last updated 7 years ago.
- NPI
- 1477549103
- Provider Name
- DR. JOHN A KEFER M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 351 DELNOR DR GENEVA, IL 60134
- Location Phone
- (630) 232-0280
- Location Fax
- (630) 232-3895
- Mailing Address
- 351 DELNOR DR GENEVA, IL 60134
- Mailing Phone
- (630) 232-0280
- Mailing Fax
- (630) 232-3895
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-27-2005
- Last Update Date
- 01-31-2018
- Code Navigator
An internist like John Kefer is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Internal Medicine Cardiovascular Disease
- Taxonomy Code
- 207RC0000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036050847
- License State
- IL
- Taxonomy Description
- An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 206147 | OTHER (01) | IL | MEDICARE PTAN (GROUP) |
| 036050847 | MEDICAID (05) | IL | |
| 206147052 | OTHER (01) | IL | MEDICARE PTAN (INDIVIDUAL) |
Medicare Participation & PECOS Enrollment Status
John Kefer is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Physician Visit Costs
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 60134 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $137.43
- Minimum New Patient Price $59.81
- Maximum New Patient Price $181.38
- Average New Patient Copayment $34.35
- Minimum New Patient Copayment $14.95
- Maximum New Patient Copayment $45.34
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $74.38
- Minimum Established Patient Price $19.15
- Maximum Established Patient Price $147.12
- Average Established Patient Copayment $18.59
- Minimum Established Patient Copayment $4.78
- Maximum Established Patient Copayment $36.78
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 4 | 7 | 7 | 5 | 4 | 9 | 1 | 0 | 3 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 4 | 14 | 7 | 10 | 4 | 18 | 1 | 0 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 4 + 1 + 4 + 7 + 1 + 0 + 4 + 1 + 8 + 1 + 0 + 24 = 57 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 57 = 3 | 3 | ||||||||
The NPI number 1477549103 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1386631018 | DR. TERRY R LABARRE M.D. Individual | Internal Medicine (Cardiovascular Disease) | 351 DELNOR DR SUITE 100 GENEVA, IL 60134 (630) 232-0280 |
| 1306833850 | DR. KURT J WILLIAMS M.D. Individual | Internal Medicine (Cardiovascular Disease) | 351 DELNOR DR SUITE 100 GENEVA, IL 60134 (630) 232-0280 |
| 1295811065 | VAN ORTHOPAEDIC & SPINE SURGERY SC Organization | Orthopaedic Surgery | 351 DELNOR DR SUITE 406 GENEVA, IL 60134 (630) 208-3099 |
| 1083836159 | MRS. CARMEN HAMPSON NP Individual | Nurse Practitioner | 351 DELNOR DR SUITE 300 GENEVA, IL 60134 (630) 262-1001 |
| 1821229501 | JEAN BORN PA-C Individual | Physician Assistant | 351 DELNOR DR SUITE 400 GENEVA, IL 60134 (630) 232-2885 |
| 1558568410 | DR. PERRY J. MENINI D.O. Individual | Internal Medicine (Hematology & Oncology) | 351 DELNOR DR SUITE 410 GENEVA, IL 60134 (630) 232-0610 |
| 1427065200 | JENNIFER EDENS NP Individual | Nurse Practitioner | 351 DELNOR DR GENEVA, IL 60134 (630) 232-0280 |
| 1669527818 | ROBERT A BAYER M.D. Individual | Internal Medicine (Hematology & Oncology) | 351 DELNOR DR GENEVA, IL 60134 (630) 232-0610 |
| 1770924847 | CORNERSTONE MEDICAL GROUP PC Organization | Podiatrist (Foot & Ankle Surgery) | 351 DELNOR DR GENEVA, IL 60134 (630) 262-1001 |
| 1558688531 | MRS. ANDREA S MARKHAM PA-C Individual | Physician Assistant | 351 DELNOR DR GENEVA, IL 60134 (630) 938-8550 |
| 1376530634 | DR. ROSS VAN DORPE M.D. Individual | Internal Medicine (Cardiovascular Disease) | 351 DELNOR DR SUITE 100 GENEVA, IL 60134 (630) 232-0280 |
| 1235140492 | DR. DEBORAH L HAY M.D. Individual | Obstetrics & Gynecology | 351 DELNOR DR GENEVA, IL 60134 (630) 208-0784 |
| 1235143835 | CHRISTOPHER MICHAEL GEORGE M.D. Individual | Internal Medicine (Hematology & Oncology) | 351 DELNOR DR GENEVA, IL 60134 (630) 232-0610 |
| 1376629626 | LAWRENCE L. JOHNSON, M.D., S.C. Organization | Dermatology | 351 DELNOR DR STE. 400 GENEVA, IL 60134 (630) 232-2885 |
| 1508011040 | MR. HENRY DARCHON HUANG M.D. Individual | Internal Medicine (Clinical Cardiac Electrophysiology) | 351 DELNOR DR GENEVA, IL 60134 (630) 232-0280 |
| 1932355013 | DR. AVANTHI RAGAM M.D. Individual | Internal Medicine (Hematology & Oncology) | 351 DELNOR DR SUITE 410 GENEVA, IL 60134 (630) 232-0610 |
| 1609187590 | DR. JACLYN BETH WIERZBICKI M.D. Individual | Surgery | 351 DELNOR DR GENEVA, IL 60134 (630) 668-0833 |
| 1215924949 | DR. WILLIAM J MACKIN M.D. Individual | Internal Medicine (Cardiovascular Disease) | 351 DELNOR DR SUITE 100 GENEVA, IL 60134 (630) 232-0280 |
| 1407809056 | MARY AHN MD Individual | Surgery | 351 DELNOR DR GENEVA, IL 60134 (630) 307-7799 |
| 1952450652 | RAKHI SHAH DO Individual | Obstetrics & Gynecology (Obstetrics) | 351 DELNOR DR GENEVA, IL 60134 (630) 208-0784 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1477549103, enumerated in the NPI registry as an "individual" on September 27, 2005
The provider is located at 351 Delnor Dr Geneva, Il 60134 and the phone number is (630) 232-0280
The provider's speciality is Internal Medicine with taxonomy code 207RC0000X with a focus in Cardiovascular Disease
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
Medicare beneficiaries should expect a typical cost of $137.43 with an average copayment of $34.35 for new patient appointments. Established patients should expect a typical charge of $74.38 and an average copayment of 18.59. Please review your insurance plan or contact the provider directly to determine your specific costs.
This NPI record was last updated on September 27, 2005. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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