DUPAGE MEDICAL GROUP, LTD
NPI 1891933255
Eyewear Supplier in Downers Grove, IL

NPI Status: Active since January 23, 2009

Contact Information

1327 BUTTERFIELD RD
618
DOWNERS GROVE, IL
ZIP 60515
Phone: (630) 322-8300

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  • Organization
  • Eyewear Supplier
  • CLIA Number: 14D2057221
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 04-10-2027

About DUPAGE MEDICAL GROUP, LTD

This page provides the complete NPI Profile along with additional information for Dupage Medical Group, Ltd, a provider established in Downers Grove, Illinois operating as a Eyewear Supplier. The healthcare provider is registered in the NPI registry with number 1891933255 assigned on January 2009. The practitioner's primary taxonomy code is 332H00000X with license number 042-000124 (IL). The provider is registered as an organization and their NPI record was last updated 3 years ago. The authorized official of this NPI record is Paul Merrick Md (Chairman Of The Board)

NPI
1891933255
Provider Name
DUPAGE MEDICAL GROUP, LTD
Entity Type
Organization
Location Address
1327 BUTTERFIELD RD 618 DOWNERS GROVE, IL 60515
Location Phone
(630) 322-8300
Mailing Address
PO BOX 713260 CHICAGO, IL 60677
Mailing Phone
(630) 469-9200
Is Sole Proprietor?
No
Is Organization Subpart?
Yes
Enumeration Date
01-23-2009
Last Update Date
10-13-2023
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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
License No.
042-000124
License State
IL
Taxonomy Description
An organization that provides spectacles, contact lenses, and other vision enhancement devices prescribed by an optometrist or ophthalmologist.

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.

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

PAUL MERRICK MD

Authorized Official Title
CHAIRMAN OF THE BOARD
Authorized Official Phone
(630) 790-1221

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
785110OTHER (01)ILMEDICARE GROUP NUMBER

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
14D2057221
Facility Type
Physician Office
Certificate Effective Date
April 11, 2025
Certificate Expiration Date
April 10, 2027
Laboratory Director
R ANDREW RAUH M D
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Dupage Medical Group, Ltd to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

Reviews for DUPAGE MEDICAL GROUP, LTD

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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 1891933255, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
8
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
5
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 9 → 18 → 9 9 → 18 → 9 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 1 + 8 + 3 + 6 + 2 + 1 + 0 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1891933255.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Ophthalmology
1327 BUTTERFIELD RD, SUITE 618
DOWNERS GROVE, IL 60515
Optometrist
1327 BUTTERFIELD RD, 618
DOWNERS GROVE, IL 60515
Ophthalmology
1327 BUTTERFIELD RD, STE 618
DOWNERS GROVE, IL 60515

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1891933255, enumerated as an "organization" on January 23, 2009.

The provider is located at 1327 BUTTERFIELD RD 618 DOWNERS GROVE, IL 60515 and the phone number is (630) 322-8300.

Eyewear Supplier with taxonomy code 332H00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.