KATIE KWAN
NPI 1649038407
Counselor - Mental Health in Redwood City, CA

NPI Status: Active since March 07, 2024

Contact Information

1410 MARSHALL ST
REDWOOD CITY, CA
ZIP 94063
Phone: (650) 372-4080

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Secondary Locations
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Counselor
Mental Health

About KATIE KWAN

This page provides the complete NPI Profile along with additional information for Katie Kwan, a provider established in Redwood City, California with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1649038407 assigned on March 2024. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1649038407
Provider Name: KATIE KWAN
Gender: Female
Entity Type: Individual
Location Address: 1410 MARSHALL ST REDWOOD CITY, CA 94063
Location Phone: (650) 372-4080
Mailing Address: 2 EDGEWOOD CT DALY CITY, CA 94014
Mailing Phone: (650) 994-7110
Is Sole Proprietor?: Yes
Enumeration Date: 03-07-2024
Last Update Date: 10-17-2025
Code Navigator

A mental health counselor like Katie Kwan provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

Location Map

Secondary Locations

1700 S Amphlett Blvd Ste 120
San Mateo, CA 94402
(650) 683-2104

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: Counselor Mental Health
Taxonomy Code: 101YM0800X
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)
1	175T00000X	Other Service Providers	Peer Specialist

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 1649038407, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 0

Check

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 0 → 0 8 → 16 → 7 0 → 0