JUSTIN AARON UNDERWOOD
NPI 1801724083
Clinical Nurse Specialist - Acute Care in Atlanta, GA
NPI Status: Active since May 11, 2026
Contact Information
550 PEACHTREE ST NE
ATLANTA, GA
ZIP 30308
Phone: (404) 686-4411
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Clinical Nurse Specialist
- Acute Care
About JUSTIN UNDERWOOD
This page provides the complete NPI Profile along with additional information for Justin Underwood, a provider established in Atlanta, Georgia operating as a Clinical Nurse Specialist, focusing in acute care . The healthcare provider is registered in the NPI registry with number 1801724083 assigned on May 2026. The practitioner's primary taxonomy code is 364SA2100X with license number RN259763 (GA). The provider is registered as an individual and their NPI record was last updated May 2026.
- NPI
- 1801724083
- Provider Name
- JUSTIN AARON UNDERWOOD
- Gender
- Entity Type
- Individual
- Location Address
- 550 PEACHTREE ST NE ATLANTA, GA 30308
- Location Phone
- (404) 686-4411
- Mailing Address
- 2094 SHADY LN TUCKER, GA 30084
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-11-2026
- Last Update Date
- 05-29-2026
- Code Navigator
A Clinical Nurse Specialist (CNS) like Justin Underwood is a type of advanced practice registered nurse (APRN) that provides direct patient care in various nursing specialties, including pediatrics or psychiatric-mental health. CNSs collaborate with other nurses and medical professionals to improve patient care quality. CNSs are often positioned in leadership roles where they may provide education and mentorship to other nursing personnel. Additionally, CNSs may also conduct research and advocate for certain healthcare policies.
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
Clinical Nurse Specialist Acute Care
- Taxonomy Code
- 364SA2100X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- RN259763
- License State
- GA
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 163W00000X | Nursing Service Providers | Registered Nurse | RN259763 (GA) |
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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 1801724083, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).
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 57 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.
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
ATLANTA, GA 30308
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1801724083, enumerated as an "individual" on May 11, 2026.
The provider is located at 550 PEACHTREE ST NE ATLANTA, GA 30308 and the phone number is (404) 686-4411.
Clinical Nurse Specialist with taxonomy code 364SA2100X and a focus in Acute Care.
