GLASSES ON OAK ST
NPI 1710512488
Eyewear Supplier in Chicago, IL

NPI Status: Active since March 03, 2020

Contact Information

900 N MICHIGAN AVE FL 5
CHICAGO, IL
ZIP 60611
Phone: (312) 751-0073
Fax: (312) 751-0129

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  • Organization
  • Eyewear Supplier

About GLASSES ON OAK ST

This page provides the complete NPI Profile along with additional information for Glasses On Oak St, a provider established in Chicago, Illinois operating as a Eyewear Supplier. The healthcare provider is registered in the NPI registry with number 1710512488 assigned on March 2020. The practitioner's primary taxonomy code is 332H00000X. The provider is registered as an organization and their NPI record was last updated 6 years ago. The authorized official of this NPI record is Dr. Carly Szafranski O.d (Doctor)

NPI
1710512488
Provider Name
GLASSES ON OAK ST
Entity Type
Organization
Location Address
900 N MICHIGAN AVE FL 5 CHICAGO, IL 60611
Location Phone
(312) 751-0073
Location Fax
(312) 751-0129
Mailing Address
900 N MICHIGAN AVE FL 5 CHICAGO, IL 60611
Mailing Phone
(312) 751-0073
Mailing Fax
(312) 751-0129
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-03-2020
Last Update Date
03-03-2020
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Location Map

Secondary Locations

  • 50 E Oak St
    Chicago, IL 60611
    (312) 944-6876

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

Eyewear Supplier

Taxonomy Code
332H00000X
Type
Suppliers
Taxonomy Description
An organization that provides spectacles, contact lenses, and other vision enhancement devices prescribed by an optometrist or ophthalmologist.

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. CARLY SZAFRANSKI O.D

Authorized Official Title
DOCTOR
Authorized Official Phone
(312) 751-0073

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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 1710512488, 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
7
Unchanged
Pos 3
1
Doubled → 2
Pos 4
0
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
1
Unchanged
Pos 7
2
Doubled → 4
Pos 8
4
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 1 → 2 5 → 10 → 1 2 → 4 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 2 + 0 + 1 + 0 + 1 + 4 + 4 + 1 + 6 + 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 1710512488.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Health and Wellness Coach
900 N MICHIGAN AVE FL 5
CHICAGO, IL 60611
Integrative Medicine
900 N MICHIGAN AVE FL 5
CHICAGO, IL 60611

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1710512488, enumerated as an "organization" on March 03, 2020.

The provider is located at 900 N MICHIGAN AVE FL 5 CHICAGO, IL 60611 and the phone number is (312) 751-0073.

Eyewear Supplier with taxonomy code 332H00000X.