Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

ALIZA GAIL TAN
NPI 1801598578
Family Medicine in North Hollywood, CA

Active since March 20, 2023
6801 COLDWATER CANYON AVE, NORTH HOLLYWOOD, CA 91605(818) 763-8836 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Family Medicine

About ALIZA TAN

This page provides the complete NPI Profile along with additional information for Aliza Tan, a primary care provider established in North Hollywood, California with a medical specialization in Family Medicine. The healthcare provider is registered in the NPI registry with number 1801598578 assigned on March 2023. The practitioner's primary taxonomy code is 207Q00000X with license number 20A24949 (CA). The provider is registered as an individual and her NPI record was last updated June 2026.

NPI
1801598578
Provider Name
ALIZA GAIL TAN
Gender
Female
Entity Type
Individual
Location Address
6801 COLDWATER CANYON AVE NORTH HOLLYWOOD, CA 91605
Location Phone
(818) 763-8836
Mailing Address
6801 COLDWATER CANYON AVE NORTH HOLLYWOOD, CA 91605
Mailing Phone
(818) 763-8836
Is Sole Proprietor?
No
Enumeration Date
03-20-2023
Last Update Date
06-30-2026
Code Navigator

A primary care provider (PCP) like Aliza Tan sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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

Family Medicine

Taxonomy Code
207Q00000X
Type
Allopathic & Osteopathic Physicians
License No.
20A24949
License State
CA
Taxonomy Description
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

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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 1801598578, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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
8
Unchanged
Pos 3
0
Doubled → 0
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
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 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 1 + 0 + 9 + 1 + 6 + 5 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1801598578.

Other Providers at the Same Location


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

Pediatrics
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Internal Medicine
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Clinical Nurse Specialist (Women's Health)
6801 COLDWATER CANYON AVE, VALLEY COMMUNITY CLINIC
NORTH HOLLYWOOD, CA 91605
Optometrist
6801 COLDWATER CANYON AVE
N HOLLYWOOD, CA 91605
Dentist
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Family Medicine
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Dentist (Dental Public Health)
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Dentist
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Family Medicine
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Registered Nurse (Community Health)
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Registered Nurse
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Pediatrics (Adolescent Medicine)
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Pharmacist
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Registered Nurse
6801 COLDWATER CANYON AVE
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605
Counselor
6801 COLDWATER CANYON AVE, 1 B
NORTH HOLLYWOOD, CA 91605

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801598578, enumerated as an "individual" on March 20, 2023.

The provider is located at 6801 COLDWATER CANYON AVE NORTH HOLLYWOOD, CA 91605 and the phone number is (818) 763-8836.

Family Medicine with taxonomy code 207Q00000X.