DR. BARLIZ WAISSENGRIN MD
NPI 1578407904
Internal Medicine - Medical Oncology in Los Angeles, CA

NPI Status: Active since April 16, 2026

Contact Information

127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA
ZIP 90048
Phone: (818) 233-2154

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Internal Medicine
Medical Oncology

About BARLIZ WAISSENGRIN

This page provides the complete NPI Profile along with additional information for Barliz Waissengrin, an internist established in Los Angeles, California with a medical specialization in Internal Medicine, focusing in medical oncology . The healthcare provider is registered in the NPI registry with number 1578407904 assigned on April 2026. The practitioner's primary taxonomy code is 207RX0202X with license number 925 (CA). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI: 1578407904
Provider Name: DR. BARLIZ WAISSENGRIN MD
Gender: Female
Entity Type: Individual
Location Address: 127 S SAN VICENTE BLVD FL 7 LOS ANGELES, CA 90048
Location Phone: (818) 233-2154
Mailing Address: 127 S SAN VICENTE BLVD FL 7 LOS ANGELES, CA 90048
Is Sole Proprietor?: No
Enumeration Date: 04-16-2026
Last Update Date: 04-16-2026
Code Navigator

An internist like Barliz Waissengrin is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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: Internal Medicine Medical Oncology
Taxonomy Code: 207RX0202X
Type: Allopathic & Osteopathic Physicians
License No.: 925
License State: CA
Taxonomy Description: An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

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 1578407904, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 0

Check

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 7 → 14 → 5 4 → 8 7 → 14 → 5 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 4 + 8 + 8 + 0 + 1 + 4 + 9 + 0 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1578407904.