CHELSI TOEUN ARNP
NPI 1417818402
Emergency Medicine in Marshalltown, IA
NPI Status: Active since November 19, 2025
Contact Information
55 UNITYPOINT WAY
MARSHALLTOWN, IA
ZIP 50158
Phone: (641) 754-5040
- Individual
- Female
- Emergency Medicine
About CHELSI TOEUN
This page provides the complete NPI Profile along with additional information for Chelsi Toeun, a provider established in Marshalltown, Iowa with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1417818402 assigned on November 2025. The practitioner's primary taxonomy code is 207P00000X with license number A188046 (IA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1417818402
- Provider Name
- CHELSI TOEUN ARNP
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 55 UNITYPOINT WAY MARSHALLTOWN, IA 50158
- Location Phone
- (641) 754-5040
- Mailing Address
- 1402 4TH AVE GRINNELL, IA 50112
- Mailing Phone
- (641) 821-5431
- Is Sole Proprietor?
- No
- Enumeration Date
- 11-19-2025
- Last Update Date
- 11-19-2025
- 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
Emergency Medicine
- Taxonomy Code
- 207P00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A188046
- License State
- IA
- Taxonomy Description
- An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
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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 1417818402, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).
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 58 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 8 providers are registered at the same or a nearby location.
MARSHALLTOWN, IA 50158
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1417818402, enumerated as an "individual" on November 19, 2025.
The provider is located at 55 UNITYPOINT WAY MARSHALLTOWN, IA 50158 and the phone number is (641) 754-5040.
Emergency Medicine with taxonomy code 207P00000X.
