THOMAS JOHN GRIJALVA MSN-FNP
NPI 1982571907
Nurse Practitioner - Primary Care in Yuma, AZ
NPI Status: Active since October 22, 2025
Contact Information
675 S AVENUE B
YUMA, AZ
ZIP 85364
Phone: (928) 539-3140
Fax: (928) 539-5579
- Individual
- Male
- Nurse Practitioner
- Primary Care
About THOMAS GRIJALVA
This page provides the complete NPI Profile along with additional information for Thomas Grijalva, a provider established in Yuma, Arizona with a medical specialization in Nurse Practitioner, focusing in primary care . The healthcare provider is registered in the NPI registry with number 1982571907 assigned on October 2025. The practitioner's primary taxonomy code is 363LP2300X with license number 223018 (AZ). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1982571907
- Provider Name
- THOMAS JOHN GRIJALVA MSN-FNP
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 675 S AVENUE B YUMA, AZ 85364
- Location Phone
- (928) 539-3140
- Location Fax
- (928) 539-5579
- Mailing Address
- 675 S AVENUE B YUMA, AZ 85364
- Mailing Phone
- (928) 539-3140
- Mailing Fax
- (928) 539-5579
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-22-2025
- Last Update Date
- 10-22-2025
- Code Navigator
A nurse practitioner (NP) like Thomas Grijalva is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, 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
Nurse Practitioner Primary Care
- Taxonomy Code
- 363LP2300X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 223018
- License State
- AZ
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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 1982571907, 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.
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 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 7 providers are registered at the same or a nearby location.
YUMA, AZ 85364
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982571907, enumerated as an "individual" on October 22, 2025.
The provider is located at 675 S AVENUE B YUMA, AZ 85364 and the phone number is (928) 539-3140.
Nurse Practitioner with taxonomy code 363LP2300X and a focus in Primary Care.
