DR. ERNESTO ARTURO AVELAR I PHARM D
NPI 1265365787
Pharmacist - Critical Care in Napa, CA
NPI Status: Active since June 04, 2026
Contact Information
1000 TRANCAS ST
NAPA, CA
ZIP 94558
Phone: (707) 287-3239
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Male
- Pharmacist
- Critical Care
About ERNESTO AVELAR
This page provides the complete NPI Profile along with additional information for Ernesto Avelar, a provider established in Napa, California with a medical specialization in Pharmacist, focusing in critical care . The healthcare provider is registered in the NPI registry with number 1265365787 assigned on June 2026. The practitioner's primary taxonomy code is 1835C0205X with license number 42308 (CA). The provider is registered as an individual and his NPI record was last updated June 2026. Ernesto Avelar operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.
- NPI
- 1265365787
- Provider Name
- DR. ERNESTO ARTURO AVELAR I PHARM D
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1000 TRANCAS ST NAPA, CA 94558
- Location Phone
- (707) 287-3239
- Mailing Address
- 1000 TRANCAS ST NAPA, CA 94558
- Mailing Phone
- (707) 287-3239
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-04-2026
- Last Update Date
- 06-04-2026
- Code Navigator
A pharmacist like Ernesto Avelar fills prescription medications, verifying instructions from physicians and offers expertise in the safe use of prescriptions. Pharmacists instruct patients on how to take a prescribed medicine and educate patients about potential side effects. Pharmacists might also conduct health and wellness screenings, provide immunizations, oversee the medications given to patients, and provide advice on healthy lifestyles.
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 Critical Care
- Taxonomy Code
- 1835C0205X
- Type
- Pharmacy Service Providers
- License No.
- 42308
- License State
- CA
- Taxonomy Description
- A licensed pharmacist who has demonstrated specialized knowledge and skill in the delivery of patient care services by pharmacists, as integral members of interprofessional teams, working to ensure the safe and effective use of medications in critically ill patients.
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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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 1265365787, 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 20 providers are registered at the same or a nearby location.
NAPA, CA 94558
NAPA, CA 94558
NAPA, CA 94558
NAPA, CA 94558
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1265365787, enumerated as an "individual" on June 04, 2026.
The provider is located at 1000 TRANCAS ST NAPA, CA 94558 and the phone number is (707) 287-3239.
Pharmacist with taxonomy code 1835C0205X and a focus in Critical Care.
