ERIC H GNESA
NPI 1811855216
Pharmacist - Emergency Medicine in Tracy, CA
NPI Status: Active since January 13, 2026
Contact Information
1420 N TRACY BLVD
TRACY, CA
ZIP 95376
Phone: (209) 832-6004
- Individual
- Male
- Pharmacist
- Emergency Medicine
About ERIC GNESA
This page provides the complete NPI Profile along with additional information for Eric Gnesa, a provider established in Tracy, California with a medical specialization in Pharmacist, focusing in emergency medicine . The healthcare provider is registered in the NPI registry with number 1811855216 assigned on January 2026. The practitioner's primary taxonomy code is 1835E0208X with license number 70691 (CA). The provider is registered as an individual and his NPI record was last updated January 2026.
- NPI
- 1811855216
- Provider Name
- ERIC H GNESA
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1420 N TRACY BLVD TRACY, CA 95376
- Location Phone
- (209) 832-6004
- Mailing Address
- 862 MIRAGGIO DR PATTERSON, CA 95363
- Mailing Phone
- (209) 648-3714
- Is Sole Proprietor?
- No
- Enumeration Date
- 01-13-2026
- Last Update Date
- 01-13-2026
- 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
Pharmacist Emergency Medicine
- Taxonomy Code
- 1835E0208X
- Type
- Pharmacy Service Providers
- License No.
- 70691
- License State
- CA
- Taxonomy Description
- A licensed pharmacist who has demonstrated specialized knowledge and skill in the care for patients at the bedside in emergency medicine settings.
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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 1811855216, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).
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 54 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.
TRACY, CA 95376
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811855216, enumerated as an "individual" on January 13, 2026.
The provider is located at 1420 N TRACY BLVD TRACY, CA 95376 and the phone number is (209) 832-6004.
Pharmacist with taxonomy code 1835E0208X and a focus in Emergency Medicine.
