JOHN ALEXANDER MD
NPI 1336126176
Internal Medicine in Evanston, IL
NPI Status: Active since December 22, 2005
Contact Information
633 EMERSON ST
EVANSTON, IL
ZIP 60208
Phone: (847) 491-8100
Fax: (847) 491-8100
- Individual
- Male
- Internal Medicine
- PECOS Enrolled
- Opted-Out Medicare
About JOHN ALEXANDER
This page provides the complete NPI Profile along with additional information for John Alexander, an internist established in Evanston, Illinois with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1336126176 assigned on December 2005. The practitioner's primary taxonomy code is 207R00000X. The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1336126176
- Provider Name
- JOHN ALEXANDER MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 633 EMERSON ST EVANSTON, IL 60208
- Location Phone
- (847) 491-8100
- Location Fax
- (847) 491-8100
- Mailing Address
- 733 MACLEAN AVE KENILWORTH, IL 60043
- Mailing Phone
- (847) 256-7787
- Mailing Fax
- (847) 491-8100
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-22-2005
- Last Update Date
- 07-08-2007
- Code Navigator
An internist like John Alexander 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.
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. John Alexander opted out of Medicare effective on 04-29-2016 until 04-29-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.
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
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License State
- IL
- Taxonomy Description
- A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Medicare Participation & PECOS Enrollment Status
John Alexander 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
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 04-29-2016
Opt-Out End Date: 04-29-2026
Eligible to Order and Refer? 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 60208 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $138.86
- Minimum New Patient Price $60.08
- Maximum New Patient Price $183.39
- Average New Patient Copayment $34.71
- Minimum New Patient Copayment $15.02
- Maximum New Patient Copayment $45.84
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $105.7
- Minimum Established Patient Price $18.97
- Maximum Established Patient Price $148.12
- Average Established Patient Copayment $26.42
- Minimum Established Patient Copayment $4.74
- Maximum Established Patient Copayment $37.03
* 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.
Reviews for JOHN ALEXANDER MD
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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 | 3 | 3 | 6 | 1 | 2 | 6 | 1 | 7 | 6 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 3 | 6 | 6 | 2 | 2 | 12 | 1 | 14 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 3 + 6 + 6 + 2 + 2 + 1 + 2 + 1 + 1 + 4 + 24 = 54 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 54 = 6 | 6 | ||||||||
The NPI number 1336126176 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 19 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1629171749 | DR. K. JOD TAYWADITEP PH.D. Individual | Psychologist (Clinical) | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-2151 |
| 1184710246 | DR. LORI SCHWARCZ MD Individual | Internal Medicine | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1659469757 | DR. INDRANI HWANG M.D. Individual | Internal Medicine | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1245536192 | PAMELA W HAZARD M.D. Individual | Psychiatry & Neurology (Psychiatry) | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-2151 |
| 1447557723 | NORTHWESTERN UNIVERSITY Organization | Clinic/Center (Student Health) | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1710276696 | BETTINA UTE BOHLE-FRANKEL M.D. Individual | Psychiatry & Neurology (Psychiatry) | 633 EMERSON ST CAPS EVANSTON, IL 60208 (847) 491-2151 |
| 1952395659 | DR. LISA REEDER MD Individual | Internal Medicine | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1902011943 | DR. RAJAT KUMAR JAIN M.D. Individual | Family Medicine (Sports Medicine) | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1225303712 | NATALIE KRAMER MED, ATC Individual | Specialist/Technologist (Athletic Trainer) | 633 EMERSON ST EVANSTON, IL 60208 (847) 467-5415 |
| 1962911131 | REBECCA HENEGHAN PHARMD Individual | Pharmacist | 633 EMERSON ST EVANSTON, IL 60208 (847) 291-2144 |
| 1376010678 | DR. TERESA MICHELLE KIKUGAWA DAT, LAT, ATC Individual | Specialist/Technologist (Athletic Trainer) | 633 EMERSON ST EVANSTON, IL 60208 (847) 467-5415 |
| 1265798813 | TONY PURKAL CPHT Individual | Pharmacy Technician | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-2144 |
| 1356433239 | KATHLEEN S PARKER Individual | Nurse Practitioner | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1427307214 | MRS. ANITA KANTILAL-PATEL OPDYCKE NP-C Individual | Nurse Practitioner | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-5470 |
| 1346604725 | DOMINIQUE MAYA STEVENS M.D. Individual | Family Medicine (Sports Medicine) | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-5470 |
| 1366544249 | JOANNE FRANCES CONNOLLY M.D. Individual | Internal Medicine | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-8100 |
| 1730248691 | LILY L. CHO-MUI MD Individual | Internal Medicine | 633 EMERSON ST EVANSTON, IL 60208 (847) 491-5470 |
| 1538499306 | MR. MARCUS WASHINGTON ATC Individual | Specialist/Technologist (Athletic Trainer) | 633 EMERSON ST EVANSTON, IL 60208 (847) 467-3538 |
| 1912500315 | JULIANA GONZALEZ LCSW Individual | Social Worker (Clinical) | 633 EMERSON ST EVANSTON, IL 60208 (954) 303-5464 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1336126176, enumerated in the NPI registry as an "individual" on December 22, 2005
The provider is located at 633 Emerson St Evanston, Il 60208 and the phone number is (847) 491-8100
The provider's speciality is Internal Medicine with taxonomy code 207R00000X
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 $138.86 with an average copayment of $34.71 for new patient appointments. Established patients should expect a typical charge of $105.7 and an average copayment of 26.42. Please review your insurance plan or contact the provider directly to determine your specific costs.
No, the provider signed an affidavit on April 29, 2016 to opt-out of the Medicare program. The provider is excluded from the Medicare program until April 29, 2026.
This NPI record was last updated on December 22, 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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