GRX HOLDINGS LLC
NPI 1740121334
Pharmacy - Community/Retail Pharmacy in Marshalltown, IA
NPI Status: Active since April 06, 2026
Contact Information
421 E MERLE HIBBS BLVD
MARSHALLTOWN, IA
ZIP 50158
Phone: (641) 752-4115
- Organization
- Pharmacy
- Community/Retail Pharmacy
About GRX HOLDINGS LLC
This page provides the complete NPI Profile along with additional information for Grx Holdings Llc, a provider established in Marshalltown, Iowa operating as a Pharmacy, focusing in community/retail pharmacy . The healthcare provider is registered in the NPI registry with number 1740121334 assigned on April 2026. The practitioner's primary taxonomy code is 3336C0003X. The provider is registered as an organization and their NPI record was last updated April 2026. The authorized official of this NPI record is Michael Fuller (President)
- NPI
- 1740121334
- Provider Name
- GRX HOLDINGS LLC
- Entity Type
- Organization
- Location Address
- 421 E MERLE HIBBS BLVD MARSHALLTOWN, IA 50158
- Location Phone
- (641) 752-4115
- Mailing Address
- 421 E MERLE HIBBS BLVD MARSHALLTOWN, IA 50158
- Mailing Phone
- (641) 752-4115
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 04-06-2026
- Last Update Date
- 04-06-2026
- 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.
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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 1740121334, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 56 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
MARSHALLTOWN, IA 50158
MARSHALLTOWN, IA 50158
MARSHALLTOWN, IA 50158
MARSHALLTOWN, IA 50158
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1740121334, enumerated as an "organization" on April 06, 2026.
The provider is located at 421 E MERLE HIBBS BLVD MARSHALLTOWN, IA 50158 and the phone number is (641) 752-4115.
Pharmacy with taxonomy code 3336C0003X and a focus in Community/Retail Pharmacy.
