DR. MATTHEW CHRISTOPHER SIMPSON O.D.
NPI 1003080920
Optometrist in Saint Louis, MO

NPI Status: Active since April 22, 2008

Contact Information

915 N GRAND BLVD
SAINT LOUIS, MO
ZIP 63106
Phone: (314) 652-4100
Fax: (314) 289-6581

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  • Individual
  • Male
  • Optometrist

About MATTHEW SIMPSON

This page provides the complete NPI Profile along with additional information for Matthew Simpson, a provider established in Saint Louis, Missouri with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1003080920 assigned on April 2008. The practitioner's primary taxonomy code is 152W00000X with license number 2015030823 (MO). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1003080920
Provider Name
DR. MATTHEW CHRISTOPHER SIMPSON O.D.
Gender
Male
Entity Type
Individual
Location Address
915 N GRAND BLVD SAINT LOUIS, MO 63106
Location Phone
(314) 652-4100
Location Fax
(314) 289-6581
Mailing Address
915 N GRAND BLVD SAINT LOUIS, MO 63106
Mailing Phone
(314) 652-4100
Mailing Fax
(314) 289-6581
Is Sole Proprietor?
No
Enumeration Date
04-22-2008
Last Update Date
03-11-2025
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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

Optometrist

Taxonomy Code
152W00000X
Type
Eye and Vision Services Providers
License No.
2015030823
License State
MO
Taxonomy Description
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

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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 1003080920, we treat the final digit (0) 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).

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
0
Doubled → 0
Pos 6
8
Unchanged
Pos 7
0
Doubled → 0
Pos 8
9
Unchanged
Pos 9
2
Doubled → 4
Check
0
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 0 → 0 0 → 0 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 0 + 8 + 0 + 9 + 4 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1003080920.

Other Providers at the Same Location


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

Pharmacist
915 N GRAND BLVD, ROOM A830
SAINT LOUIS, MO 63106
Medicare Defined Swing Bed Unit
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Internal Medicine
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Nurse Practitioner (Family)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Internal Medicine
915 N GRAND BLVD, ST. LOUIS VAMC
SAINT LOUIS, MO 63106
Nurse Practitioner (Adult Health)
915 N GRAND BLVD, EMERGENCY ROOM
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD, 119 JC
SAINT LOUIS, MO 63106
Pharmacist (Pharmacotherapy)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Physician Assistant (Medical)
915 N GRAND BLVD, 11F/JC ST. LOUIS VA
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Nurse Practitioner (Adult Health)
915 N GRAND BLVD, F11JC
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Dentist (Dental Public Health)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Pharmacist (Pharmacotherapy)
915 N GRAND BLVD, PHARMACY 119JC
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Physician Assistant
915 N GRAND BLVD, 11FJC
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Emergency Medicine
915 N GRAND BLVD
SAINT LOUIS, MO 63106

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003080920, enumerated as an "individual" on April 22, 2008.

The provider is located at 915 N GRAND BLVD SAINT LOUIS, MO 63106 and the phone number is (314) 652-4100.

Optometrist with taxonomy code 152W00000X.