APRIL RUOSHUI XU WILLIAMS
NPI 1871439539
Social Worker in Columbia, MD
NPI Status: Active since April 27, 2026
Contact Information
10400 LITTLE PATUXENT PKWY STE 305
COLUMBIA, MD
ZIP 21044
Phone: (240) 751-7257
- Individual
- Social Worker
About APRIL WILLIAMS
This page provides the complete NPI Profile along with additional information for April Williams, a provider established in Columbia, Maryland operating as a Social Worker. The healthcare provider is registered in the NPI registry with number 1871439539 assigned on April 2026. The practitioner's primary taxonomy code is 104100000X. The provider is registered as an individual and their NPI record was last updated April 2026.
- NPI
- 1871439539
- Provider Name
- APRIL RUOSHUI XU WILLIAMS
- Gender
- Entity Type
- Individual
- Location Address
- 10400 LITTLE PATUXENT PKWY STE 305 COLUMBIA, MD 21044
- Location Phone
- (240) 751-7257
- Mailing Address
- 10400 LITTLE PATUXENT PKWY STE 305 COLUMBIA, MD 21044
- Mailing Phone
- (240) 751-7257
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-27-2026
- Last Update Date
- 04-27-2026
- Code Navigator
A social worker like April Williams helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.
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
Social Worker
- Taxonomy Code
- 104100000X
- Type
- Behavioral Health & Social Service Providers
- Taxonomy Description
- A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
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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 1871439539, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).
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 71 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 6 providers are registered at the same or a nearby location.
COLUMBIA, MD 21044
COLUMBIA, MD 21044
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1871439539, enumerated as an "individual" on April 27, 2026.
The provider is located at 10400 LITTLE PATUXENT PKWY STE 305 COLUMBIA, MD 21044 and the phone number is (240) 751-7257.
Social Worker with taxonomy code 104100000X.
