SANDRA ISABEL CASTILLO ALLEN
NPI 1235058587
Nurse Practitioner - Primary Care in Santa Rosa Beach, FL
NPI Status: Active since July 13, 2026
Contact Information
139 GOLDEN EAGLE CT
SANTA ROSA BEACH, FL
ZIP 32459
Phone: (786) 818-0133
This NPI profile has been added to the NPI registry within the last 30 days.
NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.
- Individual
- Female
- Nurse Practitioner
- Primary Care
About SANDRA CASTILLO ALLEN
This page provides the complete NPI Profile along with additional information for Sandra Castillo Allen, a provider established in Santa Rosa Beach, Florida with a medical specialization in Nurse Practitioner, focusing in primary care . The healthcare provider is registered in the NPI registry with number 1235058587 assigned on July 2026. The practitioner's primary taxonomy code is 363LP2300X with license number 9657545 (FL). The provider is registered as an individual and her NPI record was last updated July 2026.
- NPI
- 1235058587
- Provider Name
- SANDRA ISABEL CASTILLO ALLEN
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 139 GOLDEN EAGLE CT SANTA ROSA BEACH, FL 32459
- Location Phone
- (786) 818-0133
- Mailing Address
- 139 GOLDEN EAGLE CT SANTA ROSA BEACH, FL 32459
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-13-2026
- Last Update Date
- 07-13-2026
- Code Navigator
A nurse practitioner (NP) like Sandra Castillo Allen 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.
- 9657545
- License State
- FL
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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 1235058587, 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.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235058587, enumerated as an "individual" on July 13, 2026.
The provider is located at 139 GOLDEN EAGLE CT SANTA ROSA BEACH, FL 32459 and the phone number is (786) 818-0133.
Nurse Practitioner with taxonomy code 363LP2300X and a focus in Primary Care.
