JUSTIN EDWARD MARKEL MD
NPI 1104560358
Surgery in Pasadena, CA

NPI Status: Active since April 25, 2022

Contact Information

100 W CALIFORNIA BLVD
PASADENA, CA
ZIP 91105
Phone: (626) 397-5166

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  • Individual
  • Male
  • Surgery

About JUSTIN MARKEL

This page provides the complete NPI Profile along with additional information for Justin Markel, a provider established in Pasadena, California with a medical specialization in Surgery. The healthcare provider is registered in the NPI registry with number 1104560358 assigned on April 2022. The practitioner's primary taxonomy code is 208600000X with license number A194903 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1104560358
Provider Name
JUSTIN EDWARD MARKEL MD
Gender
Male
Entity Type
Individual
Location Address
100 W CALIFORNIA BLVD PASADENA, CA 91105
Location Phone
(626) 397-5166
Mailing Address
100 W CALIFORNIA BLVD PASADENA, CA 91105
Is Sole Proprietor?
No
Enumeration Date
04-25-2022
Last Update Date
03-29-2025
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A surgeon like Justin Markel treats injuries, diseases, and deformities through surgical operations. A surgeon could correct physical deformities, repair bone and tissue, or perform preventive or elective surgeries. Surgeons also examine patients, perform and interpret diagnostic tests, and provide counsel on preventive healthcare.

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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

Surgery

Taxonomy Code
208600000X
Type
Allopathic & Osteopathic Physicians
License No.
A194903
License State
CA
Taxonomy Description
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

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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 1104560358, we treat the final digit (8) 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 42. The final step is to find the difference between that total and the next multiple of ten (50 - 42 = 8).

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.

Pos 1
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
6
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
8
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 0 → 0 5 → 10 → 1 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 0 + 4 + 1 + 0 + 6 + 0 + 3 + 1 + 0 + 24 = 42

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 42 is 50. The difference is the calculated check digit.

50 - 42 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1104560358.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Radiology (Diagnostic Radiology)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Radiology (Diagnostic Radiology)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Radiology (Diagnostic Radiology)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Pediatrics (Neonatal-Perinatal Medicine)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Pediatrics (Neonatal-Perinatal Medicine)
100 W CALIFORNIA BLVD, DEPARTMENT OF NEONATOLOGY
PASADENA, CA 91105
Emergency Medicine
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Emergency Medicine
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Physician Assistant (Medical)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Anesthesiology
100 W CALIFORNIA BLVD
PASADENA, CA 91105

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104560358, enumerated as an "individual" on April 25, 2022.

The provider is located at 100 W CALIFORNIA BLVD PASADENA, CA 91105 and the phone number is (626) 397-5166.

Surgery with taxonomy code 208600000X.