CRYSTAL KERSON
NPI 1659201507
Clinic/Center - Federally Qualified Health Center (FQHC) in Ewa Beach, HI

NPI Status: Active since May 21, 2026

Contact Information

91-1841 FORT WEAVER RD
EWA BEACH, HI
ZIP 96706
Phone: (808) 681-3500

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Newly Listed Provider
This NPI profile has been added to the NPI registry within the last 30 days.

Table of Contents

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

Individual
Female
Clinic/Center
Federally Qualified Health Center (FQHC)

About CRYSTAL KERSON

This page provides the complete NPI Profile along with additional information for Crystal Kerson, a primary care provider established in Ewa Beach, Hawaii with a medical specialization in Clinic/center, focusing in federally qualified health center (fqhc) . The healthcare provider is registered in the NPI registry with number 1659201507 assigned on May 2026. The practitioner's primary taxonomy code is 261QF0400X. The provider is registered as an individual and her NPI record was last updated May 2026.

NPI: 1659201507
Provider Name: CRYSTAL KERSON
Gender: Female
Entity Type: Individual
Location Address: 91-1841 FORT WEAVER RD EWA BEACH, HI 96706
Location Phone: (808) 681-3500
Mailing Address: 91-501 EWA BEACH RD APT A EWA BEACH, HI 96706
Mailing Phone: (808) 778-8516
Is Sole Proprietor?: No
Enumeration Date: 05-21-2026
Last Update Date: 05-21-2026
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A primary care provider (PCP) like Crystal Kerson sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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: Clinic/Center Federally Qualified Health Center (FQHC)
Taxonomy Code: 261QF0400X
Type: Ambulatory Health Care Facilities
License State: HI

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 1659201507, 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 4

Pos 6

Unchanged

Pos 7

Doubled → 2

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 5 → 10 → 1 2 → 4 1 → 2 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 4 + 0 + 2 + 5 + 0 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1659201507.