MRS. NIA AYANNA WATSON LEE
NPI 1144155649
Social Worker in Washington, DC

NPI Status: Active since June 16, 2026

Contact Information

3700 N CAPITOL ST NW
WASHINGTON, DC
ZIP 20011
Phone: (202) 509-3489

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  • Individual
  • Female
  • Social Worker

About NIA WATSON LEE

This page provides the complete NPI Profile along with additional information for Nia Watson Lee, a provider established in Washington, District Of Columbia with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1144155649 assigned on June 2026. The practitioner's primary taxonomy code is 104100000X with license number LG200004318 (DC). The provider is registered as an individual and her NPI record was last updated June 2026.

NPI
1144155649
Provider Name
MRS. NIA AYANNA WATSON LEE
Gender
Female
Entity Type
Individual
Location Address
3700 N CAPITOL ST NW WASHINGTON, DC 20011
Location Phone
(202) 509-3489
Mailing Address
6710 PEPPER ST CAPITOL HEIGHTS, MD 20743
Mailing Phone
(202) 509-3489
Is Sole Proprietor?
Yes
Enumeration Date
06-16-2026
Last Update Date
06-16-2026
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A social worker like Nia Watson Lee 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.

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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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
LG200004318
License State
DC
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 1144155649, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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.

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 2 + 5 + 1 + 0 + 6 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1144155649.

Other Providers at the Same Location


The following 13 providers are registered at the same or a nearby location.

Occupational Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Occupational Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Physical Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Speech-Language Pathologist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Internal Medicine
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Nurse Practitioner (Family)
3700 N CAPITOL ST NW, LAGARDE 2
WASHINGTON, DC 20011
Durable Medical Equipment & Medical Supplies
3700 N CAPITOL ST NW, SHERMAN BUILDING
WASHINGTON, DC 20011
Occupational Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Occupational Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Custodial Care Facility (Adult Care Home)
3700 N CAPITOL ST NW, KING HEALTH CENTER
WASHINGTON, DC 20011
Physical Medicine & Rehabilitation
3700 N CAPITOL ST NW
WASHINGTON, DC 20011
Nursing Care
3700 N CAPITOL ST NW, HEALTH CARE SERVICES
WASHINGTON, DC 20011
Physical Therapist
3700 N CAPITOL ST NW
WASHINGTON, DC 20011

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144155649, enumerated as an "individual" on June 16, 2026.

The provider is located at 3700 N CAPITOL ST NW WASHINGTON, DC 20011 and the phone number is (202) 509-3489.

Social Worker with taxonomy code 104100000X.