DR. CHRISTOPHER SAMI OUSTWANI M.D.
NPI 1497193411
Internal Medicine in Oak Park, IL
NPI Status: Active since June 12, 2013
Contact Information
3 ERIE CT
SUITE L-700
OAK PARK, IL
ZIP 60302
Phone: (708) 763-1222
Fax: (708) 763-1471
- Individual
- Male
- Internal Medicine
- PECOS Enrolled
About CHRISTOPHER OUSTWANI
This page provides the complete NPI Profile along with additional information for Christopher Oustwani, an internist established in Oak Park, Illinois with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1497193411 assigned on June 2013. The practitioner's primary taxonomy code is 207R00000X with license number 125063398 (IL). The provider is registered as an individual and his NPI record was last updated 12 years ago.
- NPI
- 1497193411
- Provider Name
- DR. CHRISTOPHER SAMI OUSTWANI M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3 ERIE CT SUITE L-700 OAK PARK, IL 60302
- Location Phone
- (708) 763-1222
- Location Fax
- (708) 763-1471
- Mailing Address
- 3 ERIE CT SUITE L-700 OAK PARK, IL 60302
- Mailing Phone
- (708) 763-1222
- Mailing Fax
- (708) 763-1471
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-12-2013
- Last Update Date
- 06-12-2013
- Code Navigator
An internist like Christopher Oustwani 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
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 125063398
- 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
Christopher Oustwani 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 60302 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 DR. CHRISTOPHER SAMI OUSTWANI M.D.
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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 | 9 | 7 | 1 | 9 | 3 | 4 | 1 | 1 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 4 | 18 | 7 | 2 | 9 | 6 | 4 | 2 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 4 + 1 + 8 + 7 + 2 + 9 + 6 + 4 + 2 + 24 = 69 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 69 = 1 | 1 | ||||||||
The NPI number 1497193411 is valid because the calculated check digit 1 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 |
|---|---|---|---|
| 1609876077 | DR. PAULA B GREEN M.D. Individual | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 763-6747 |
| 1962497925 | DAVID SCHATZ MD Individual | Internal Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 763-2536 |
| 1760426506 | DR. JEFFREY J. MURYN M.D. Individual | Anesthesiology | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1194769216 | DR. AVRAM I. AVRAMOV M.D. Individual | Anesthesiology | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1295761302 | DR. VEMURI S. MURTHY M.D. Individual | Anesthesiology | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1043247372 | HEIDI ASBURY M.D. Individual | Pathology (Anatomic Pathology & Clinical Pathology) | 3 ERIE CT OAK PARK, IL 60302 (708) 763-6947 |
| 1114954401 | WEST SIDE PATHOLOGY ASSOCIATES, P.C. Organization | Pathology (Anatomic Pathology & Clinical Pathology) | 3 ERIE CT OAK PARK, IL 60302 (877) 852-4669 |
| 1053349886 | MAX L HARRIS MD Individual | Internal Medicine (Rheumatology) | 3 ERIE CT L700 OAK PARK, IL 60302 (708) 763-2536 |
| 1841220704 | POLINA ZAYTSEV M.D. Individual | Pathology (Anatomic Pathology & Clinical Pathology) | 3 ERIE CT OAK PARK, IL 60302 (708) 763-6947 |
| 1154346534 | RICHARD SCHMITT M.D. Individual | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1366467037 | WEST SIDE EMERGENCY PHYSICIANS, LLP Organization | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1467477703 | JAGDISH MUZUMDAR M.D., FACEP Individual | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1164449799 | STEVEN ROSS M.D. Individual | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1316958754 | DAVID R SCHATZ MD SC Organization | Internal Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 763-2536 |
| 1720185507 | BRUCE MAC KENZIE M.D. Individual | Emergency Medicine | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1902906191 | DR. PANKAJA HANUMADASS M.D. Individual | Anesthesiology | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1538240676 | WEST SUBURBAN MEDICAL CENTER Organization | Internal Medicine | 3 ERIE CT SUITE 700 OAK PARK, IL 60302 (708) 763-1222 |
| 1639246861 | CHANDA MAYO-FORD M.D. Individual | Rehabilitation Practitioner | 3 ERIE CT 5N OAK PARK, IL 60302 (708) 987-0064 |
| 1780720664 | WEST SUBURBAN HOSPITAL MEDICAL CENTER Organization | General Acute Care Hospital | 3 ERIE CT OAK PARK, IL 60302 (708) 383-6200 |
| 1538206974 | WEST SUBURBAN HOSPITAL MEDICAL CENTER Organization | Skilled Nursing Facility | 3 ERIE CT OAK PARK, IL 60302 (708) 763-1010 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1497193411, enumerated in the NPI registry as an "individual" on June 12, 2013
The provider is located at 3 Erie Ct Suite L-700 Oak Park, Il 60302 and the phone number is (708) 763-1222
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.
This NPI record was last updated on June 12, 2013. 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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