ALEX FRANCIS CHEN
NPI 1407564016
Pathology - Anatomic Pathology & Clinical Pathology in San Francisco, CA

NPI Status: Active since November 11, 2022

Contact Information

505 PARNASSUS AVE
SUITE M590, BOX 0511
SAN FRANCISCO, CA
ZIP 94143
Phone: (415) 353-1613

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  • Individual
  • Male
  • Pathology
  • Anatomic Pathology & Clinical Pathology

About ALEX CHEN

This page provides the complete NPI Profile along with additional information for Alex Chen, a provider established in San Francisco, California with a medical specialization in Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1407564016 assigned on November 2022. The practitioner's primary taxonomy code is 207ZP0102X with license number 1407564016 (CA). The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI
1407564016
Provider Name
ALEX FRANCIS CHEN
Gender
Male
Entity Type
Individual
Location Address
505 PARNASSUS AVE SUITE M590, BOX 0511 SAN FRANCISCO, CA 94143
Location Phone
(415) 353-1613
Mailing Address
505 PARNASSUS AVE SUITE M590, BOX 0511 SAN FRANCISCO, CA 94143
Is Sole Proprietor?
Yes
Enumeration Date
11-11-2022
Last Update Date
04-05-2024
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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

Pathology Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
License No.
1407564016
License State
CA
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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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 1407564016, 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.

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

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 0 + 7 + 1 + 0 + 6 + 8 + 0 + 2 + 24 = 54

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.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1407564016.

Other Providers at the Same Location


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

Pharmacist
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Pediatrics (Pediatric Critical Care Medicine)
505 PARNASSUS AVE, M680
SAN FRANCISCO, CA 94143
Internal Medicine
505 PARNASSUS AVE, RM M-1180D
SAN FRANCISCO, CA 94143
Specialist
505 PARNASSUS AVE, L352
SAN FRANCISCO, CA 94143
Specialist
505 PARNASSUS AVE, L352
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology (Critical Care Medicine)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Pathology (Anatomic Pathology)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Radiology (Diagnostic Radiology)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Internal Medicine
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology (Critical Care Medicine)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Surgery
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Anesthesiology
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Internal Medicine
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1407564016, enumerated as an "individual" on November 11, 2022.

The provider is located at 505 PARNASSUS AVE SUITE M590, BOX 0511 SAN FRANCISCO, CA 94143 and the phone number is (415) 353-1613.

Pathology with taxonomy code 207ZP0102X and a focus in Anatomic Pathology & Clinical Pathology.