OLIVIA MCARTHUR
NPI 1619225109
Social Worker - School in San Francisco, CA

NPI Status: Active since August 15, 2012

Contact Information

5015 3RD ST
SAN FRANCISCO, CA
ZIP 94124
Phone: (415) 822-1585

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  • Individual
  • Female
  • Social Worker
  • School

About OLIVIA MCARTHUR

This page provides the complete NPI Profile along with additional information for Olivia Mcarthur, a provider established in San Francisco, California with a medical specialization in Social Worker, focusing in school . The healthcare provider is registered in the NPI registry with number 1619225109 assigned on August 2012. The practitioner's primary taxonomy code is 1041S0200X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1619225109
Provider Name
OLIVIA MCARTHUR
Gender
Female
Entity Type
Individual
Location Address
5015 3RD ST SAN FRANCISCO, CA 94124
Location Phone
(415) 822-1585
Mailing Address
5015 3RD ST SAN FRANCISCO, CA 94124
Mailing Phone
(415) 822-1585
Is Sole Proprietor?
Yes
Enumeration Date
08-15-2012
Last Update Date
12-01-2025
Code Navigator

A school social worker like Olivia Mcarthur works with teachers, parents, and school administrators to develop plans and strategies to improve students' academic performance and social development. Students are referred to school social workers to deal with problems like aggressive behavior, bullying, or frequent school absences.

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 School

Taxonomy Code
1041S0200X
Type
Behavioral Health & Social Service Providers

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)
11041C0700XBehavioral Health & Social Service Providers

Social Worker
Clinical

107602 (CA)

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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 1619225109, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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
6
Unchanged
Pos 3
1
Doubled → 2
Pos 4
9
Unchanged
Pos 5
2
Doubled → 4
Pos 6
2
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
1
Unchanged
Pos 9
0
Doubled → 0
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 1 → 2 2 → 4 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 2 + 9 + 4 + 2 + 1 + 0 + 1 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1619225109.

Other Providers at the Same Location


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

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5015 3RD ST
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5015 3RD ST
SAN FRANCISCO, CA 94124
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5015 3RD ST
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
5015 3RD ST
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
5015 3RD ST
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
5015 3RD ST
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
5015 3RD ST
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Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1619225109, enumerated as an "individual" on August 15, 2012.

The provider is located at 5015 3RD ST SAN FRANCISCO, CA 94124 and the phone number is (415) 822-1585.

Social Worker with taxonomy code 1041S0200X and a focus in School.