DR. STEFANIE MICHELLE CHAN O.D.
NPI 1689055923
Optometrist - Corneal and Contact Management in Berkeley, CA

NPI Status: Active since June 12, 2015

Contact Information

230 MINOR HL
BERKELEY, CA
ZIP 94720
Phone: (510) 642-2020

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

Individual
Female
Optometrist
Corneal and Contact Management
Accepts Insurance

About STEFANIE CHAN

This page provides the complete NPI Profile along with additional information for Stefanie Chan, a provider established in Berkeley, California with a medical specialization in Optometrist, focusing in corneal and contact management . The healthcare provider is registered in the NPI registry with number 1689055923 assigned on June 2015. The practitioner's primary taxonomy code is 152WC0802X with license number 15237 (CA). The provider is registered as an individual and her NPI record was last updated 11 years ago.

NPI: 1689055923
Provider Name: DR. STEFANIE MICHELLE CHAN O.D.
Gender: Female
Entity Type: Individual
Location Address: 230 MINOR HL BERKELEY, CA 94720
Location Phone: (510) 642-2020
Mailing Address: 230 MINOR HL BERKELEY, CA 94720
Mailing Phone: (510) 642-2020
Is Sole Proprietor?: No
Enumeration Date: 06-12-2015
Last Update Date: 06-12-2015
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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: Optometrist Corneal and Contact Management
Taxonomy Code: 152WC0802X
Type: Eye and Vision Services Providers
License No.: 15237
License State: CA
Taxonomy Description: The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Providence Health Plan

Connect 1500 Gold - EPO
Connect 6000 Silver - EPO
Connect 9800 Bronze - EPO
HSA Qualified 7500 Bronze - Choice Network - EPO
HSA-E Qualified 7500 Bronze - Signature Network - EPO
Providence Oregon Standard Bronze Plan - Choice Network - EPO
Providence Oregon Standard Bronze Plan - Signature Network - EPO
Providence Oregon Standard Gold Plan - Choice Network - EPO
Providence Oregon Standard Gold Plan - Signature Network - EPO
Providence Oregon Standard Silver Plan - Choice Network - EPO
Providence Oregon Standard Silver Plan - Signature Network - EPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

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 1689055923, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 4

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 8 → 16 → 7 0 → 0 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 0 + 5 + 1 + 0 + 9 + 4 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1689055923.