COSTCO WHOLESALE CORPORATION
NPI 1588534606
Pharmacy - Community/Retail Pharmacy in Roseville, CA

NPI Status: Active since November 05, 2025

Contact Information

5200 BASELINE RD
ROSEVILLE, CA
ZIP 95747
Phone: (916) 297-6430
Fax: (916) 721-2752

Get Directions Write a Review

  • Organization
  • Pharmacy
  • Community/Retail Pharmacy

About COSTCO WHOLESALE CORPORATION

This page provides the complete NPI Profile along with additional information for Costco Wholesale Corporation, a provider established in Roseville, California operating as a Pharmacy, focusing in community/retail pharmacy . The healthcare provider is registered in the NPI registry with number 1588534606 assigned on November 2025. The practitioner's primary taxonomy code is 3336C0003X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is Richard Stephens Rph (Svp Pharmacy)

NPI
1588534606
Provider Name
COSTCO WHOLESALE CORPORATION
Entity Type
Organization
Location Address
5200 BASELINE RD ROSEVILLE, CA 95747
Location Phone
(916) 297-6430
Location Fax
(916) 721-2752
Mailing Address
PO BOX 34300 SEATTLE, WA 98124
Mailing Phone
(425) 313-8100
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
11-05-2025
Last Update Date
11-26-2025
Code Navigator

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

Pharmacy Community/Retail Pharmacy

Taxonomy Code
3336C0003X
Type
Suppliers
Taxonomy Description
A pharmacy where pharmacists store, prepare, and dispense medicinal preparations and/or prescriptions for a local patient population in accordance with federal and state law; counsel patients and caregivers (sometimes independent of the dispensing process); administer vaccinations; and provide other professional services associated with pharmaceutical care such as health screenings, consultative services with other health care providers, collaborative practice, disease state management, and education classes.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

RICHARD STEPHENS RPH

Authorized Official Title
SVP PHARMACY
Authorized Official Phone
(425) 313-8259

Reviews for COSTCO WHOLESALE CORPORATION

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1588534606, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
3
Unchanged
Pos 7
4
Doubled → 8
Pos 8
6
Unchanged
Pos 9
0
Doubled → 0
Check
6
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 8 → 16 → 7 5 → 10 → 1 4 → 8 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 1 + 0 + 3 + 8 + 6 + 0 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1588534606.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Hearing Aid Equipment
5200 BASELINE RD
ROSEVILLE, CA 95747
Eyewear Supplier
5200 BASELINE RD
ROSEVILLE, CA 95747

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588534606, enumerated as an "organization" on November 05, 2025.

The provider is located at 5200 BASELINE RD ROSEVILLE, CA 95747 and the phone number is (916) 297-6430.

Pharmacy with taxonomy code 3336C0003X and a focus in Community/Retail Pharmacy.