AARON ESRIG M.D.
NPI 1023212297
Radiology - Nuclear Radiology in Laguna Beach, CA
NPI Status: Active since June 12, 2007
Contact Information
2505 KILO WAY
LAGUNA BEACH, CA
ZIP 92651
Phone: (949) 497-4091
Fax: (949) 497-1557
- Individual
- Male
- Radiology
- Nuclear Radiology
About AARON ESRIG
This page provides the complete NPI Profile along with additional information for Aaron Esrig, a provider established in Laguna Beach, California with a medical specialization in Radiology, focusing in nuclear radiology . The healthcare provider is registered in the NPI registry with number 1023212297 assigned on June 2007. The practitioner's primary taxonomy code is 2085N0904X with license number G09195 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1023212297
- Provider Name
- AARON ESRIG M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2505 KILO WAY LAGUNA BEACH, CA 92651
- Location Phone
- (949) 497-4091
- Location Fax
- (949) 497-1557
- Mailing Address
- 2505 KILO WAY LAGUNA BEACH, CA 92651
- Mailing Phone
- (949) 497-4091
- Mailing Fax
- (949) 497-1557
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-12-2007
- Last Update Date
- 09-11-2025
- 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
Radiology Nuclear Radiology
- Taxonomy Code
- 2085N0904X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G09195
- License State
- CA
- Taxonomy Description
- A radiologist who is involved in the analysis and imaging of radionuclides and radiolabeled substances in vitro and in vivo for diagnosis and the administration of radionuclides and radiolabeled substances for the treatment of disease.
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 | 2085R0202X | Allopathic & Osteopathic Physicians | Radiology | G09195 (CA) |
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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 1023212297, 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 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 53 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1023212297, enumerated as an "individual" on June 12, 2007.
The provider is located at 2505 KILO WAY LAGUNA BEACH, CA 92651 and the phone number is (949) 497-4091.
Radiology with taxonomy code 2085N0904X and a focus in Nuclear Radiology.
