RANDAL REGINALD WILLIAMS
NPI 1003334152
Contractor in Fountain Valley, CA
NPI Status: Active since September 08, 2017
Contact Information
17264 EUCLID ST APT H
FOUNTAIN VALLEY, CA
ZIP 92708
Phone: (949) 300-6415
- Individual
- Male
- Contractor
About RANDAL WILLIAMS
This page provides the complete NPI Profile along with additional information for Randal Williams, a provider established in Fountain Valley, California with a medical specialization in Contractor. The healthcare provider is registered in the NPI registry with number 1003334152 assigned on September 2017. The practitioner's primary taxonomy code is 171W00000X. The provider is registered as an individual and his NPI record was last updated March 2026.
- NPI
- 1003334152
- Provider Name
- RANDAL REGINALD WILLIAMS
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 17264 EUCLID ST APT H FOUNTAIN VALLEY, CA 92708
- Location Phone
- (949) 300-6415
- Mailing Address
- 17264 EUCLID ST APT H FOUNTAIN VALLEY, CA 92708
- Mailing Phone
- (949) 300-6415
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-08-2017
- Last Update Date
- 03-05-2026
- Code Navigator
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
Contractor
- Taxonomy Code
- 171W00000X
- Type
- Other Service Providers
- Taxonomy Description
- For the purposes of the Health Care Provider Taxonomy, a contractor is limited to individuals who do construction or mechanical work to modify a patient's environment to accommodate a health condition. Contractors perform projects including, but not limited to, building wheelchair ramps, widening doorways, modifying personal vehicles, and making other improvements for patient access and movement. This code has no relation to a provider's employment status.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 1041C0700X | Behavioral Health & Social Service Providers | Social Worker | 131190 (CA) |
Reviews for RANDAL REGINALD WILLIAMS
5 out of 5 stars - Review by Angie ***** on April 18, 2026
hello I do this therapist that my husband had while back before unfortunately his last job had let him go do funding cuts. we have been trying find so he can once again do therapy for my husband because he was really good but the only is able treat my husband metal health. we really like for him be my husband therapist again
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 1003334152, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 48 is 50. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1003334152, enumerated as an "individual" on September 08, 2017.
The provider is located at 17264 EUCLID ST APT H FOUNTAIN VALLEY, CA 92708 and the phone number is (949) 300-6415.
Contractor with taxonomy code 171W00000X.
