DR. RONALD WAYNE ALEXANDER JR. PH.D., DBSM
NPI 1033203468
Psychologist - Health Service in Biloxi, MS

NPI Status: Active since October 02, 2006

Contact Information

400 VETERANS AVE # 111B
BILOXI, MS
ZIP 39531
Phone: (228) 523-5314

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  • Individual
  • Male
  • Psychologist
  • Health Service

About RONALD ALEXANDER

This page provides the complete NPI Profile along with additional information for Ronald Alexander, a provider established in Biloxi, Mississippi with a medical specialization in Psychologist, focusing in health service . The healthcare provider is registered in the NPI registry with number 1033203468 assigned on October 2006. The practitioner's primary taxonomy code is 103TH0100X with license number 621134 (MS). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1033203468
Provider Name
DR. RONALD WAYNE ALEXANDER JR. PH.D., DBSM
Gender
Male
Entity Type
Individual
Location Address
400 VETERANS AVE # 111B BILOXI, MS 39531
Location Phone
(228) 523-5314
Mailing Address
10189 LAKE FOREST DR OCEAN SPRINGS, MS 39565
Mailing Phone
(228) 238-4095
Is Sole Proprietor?
Yes
Enumeration Date
10-02-2006
Last Update Date
10-09-2025
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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

Psychologist Health Service

Taxonomy Code
103TH0100X
Type
Behavioral Health & Social Service Providers
License No.
621134
License State
MS
Taxonomy Description
A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

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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 1033203468, 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
3
Doubled → 6
Pos 4
3
Unchanged
Pos 5
2
Doubled → 4
Pos 6
0
Unchanged
Pos 7
3
Doubled → 6
Pos 8
4
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 3 → 6 2 → 4 3 → 6 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 6 + 3 + 4 + 0 + 6 + 4 + 1 + 2 + 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 1033203468.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Psychologist (Clinical)
400 VETERANS AVE # 111B
BILOXI, MS 39531

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033203468, enumerated as an "individual" on October 02, 2006.

The provider is located at 400 VETERANS AVE # 111B BILOXI, MS 39531 and the phone number is (228) 523-5314.

Psychologist with taxonomy code 103TH0100X and a focus in Health Service.