LEON J FRAZIN, M.D., S.C.
NPI 1003912908
Internal Medicine - Cardiovascular Disease in Chicago, IL

NPI Status: Active since September 16, 2006

Contact Information

2222 W DIVISION ST
STE 250
CHICAGO, IL
ZIP 60622
Phone: (773) 276-0988
Fax: (773) 276-0955

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  • Organization
  • Internal Medicine
  • Cardiovascular Disease

About LEON J FRAZIN, M.D., S.C.

This page provides the complete NPI Profile along with additional information for Leon J Frazin, M.d., S.c., an internist established in Chicago, Illinois operating as a Internal Medicine, focusing in cardiovascular disease . The healthcare provider is registered in the NPI registry with number 1003912908 assigned on September 2006. The practitioner's primary taxonomy code is 207RC0000X. The provider is registered as an organization and their NPI record was last updated 6 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The provider's is doing business as Leon J Frazin, M.d., S.c.. The authorized official of this NPI record is Dr. Leon J Frazin M.d. (Physician/surgeon)

NPI
1003912908
Provider Legal Name
LEON J FRAZIN, M.D.
Other Organization Name
LEON J FRAZIN, M.D., S.C.
Other Name Type
Doing Business As (3)
Entity Type
Organization
Location Address
2222 W DIVISION ST STE 250 CHICAGO, IL 60622
Location Phone
(773) 276-0988
Location Fax
(773) 276-0955
Mailing Address
241 GOLF MILL CTR STE 728 NILES, IL 60714
Mailing Phone
(847) 635-6490
Mailing Fax
(773) 276-0955
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-16-2006
Last Update Date
08-22-2020
Code Navigator

An internist like Leon J Frazin, M.d., S.c. 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 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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. LEON J FRAZIN M.D.

Authorized Official Title
PHYSICIAN/SURGEON
Authorized Official Phone
(847) 635-6490

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1003912908, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
0
Doubled → 0
Pos 4
3
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
1
Unchanged
Pos 7
2
Doubled → 4
Pos 8
9
Unchanged
Pos 9
0
Doubled → 0
Check
8
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 0 → 0 9 → 18 → 9 2 → 4 0 → 0

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 0 + 3 + 1 + 8 + 1 + 4 + 9 + 0 + 24 = 52

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1003912908.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Orthopaedic Surgery
2222 W DIVISION ST, SUITE 235
CHICAGO, IL 60622
Otolaryngology
2222 W DIVISION ST, SUITE 230
CHICAGO, IL 60622
Legal Medicine
2222 W DIVISION ST, SUITE 260
CHICAGO, IL 60622
Internal Medicine
2222 W DIVISION ST, STE 300
CHICAGO, IL 60622
Pediatrics (Neonatal-Perinatal Medicine)
2222 W DIVISION ST, SUITE 330
CHICAGO, IL 60622
Pediatrics (Neonatal-Perinatal Medicine)
2222 W DIVISION ST, SUITE 330
CHICAGO, IL 60622
Otolaryngology
2222 W DIVISION ST, SUITE 230
CHICAGO, IL 60622
Dentist (Pediatric Dentistry)
2222 W DIVISION ST, SUITE 130
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, #220
CHICAGO, IL 60622
Internal Medicine (Hematology & Oncology)
2222 W DIVISION ST, STE 210
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, STE 300
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, SUITE 300
CHICAGO, IL 60622
Pediatrics (Neonatal-Perinatal Medicine)
2222 W DIVISION ST, SUITE #330 C/O DR. WASSEF
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, SUITE # 300
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, SUITE # 300
CHICAGO, IL 60622
Surgery
2222 W DIVISION ST, STE 225
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, SUITE 300
CHICAGO, IL 60622
Obstetrics & Gynecology
2222 W DIVISION ST, SUITE340
CHICAGO, IL 60622
Internal Medicine (Rheumatology)
2222 W DIVISION ST, SUITE 310
CHICAGO, IL 60622
Internal Medicine (Cardiovascular Disease)
2222 W DIVISION ST, SUITE 300
CHICAGO, IL 60622

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003912908, enumerated as an "organization" on September 16, 2006.

The provider is located at 2222 W DIVISION ST STE 250 CHICAGO, IL 60622 and the phone number is (773) 276-0988.

Internal Medicine with taxonomy code 207RC0000X and a focus in Cardiovascular Disease.