MR. CLIFFORD DAVID LIEN LDO
NPI 1720174782
Technician/Technologist - Optician in Portland, OR
NPI Status: Active since October 05, 2006
Contact Information
3600 N INTERSTATE AVE
PORTLAND, OR
ZIP 97227
Phone: (503) 249-3429
Fax: (503) 249-5548
- Individual
- Male
- Technician/Technologist
- Optician
About CLIFFORD LIEN
This page provides the complete NPI Profile along with additional information for Clifford Lien, a provider established in Portland, Oregon with a medical specialization in Technician/technologist, focusing in optician . The healthcare provider is registered in the NPI registry with number 1720174782 assigned on October 2006. The practitioner's primary taxonomy code is 156FX1800X with license number 1967 (WA). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1720174782
- Provider Name
- MR. CLIFFORD DAVID LIEN LDO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3600 N INTERSTATE AVE PORTLAND, OR 97227
- Location Phone
- (503) 249-3429
- Location Fax
- (503) 249-5548
- Mailing Address
- 1015 S FIR CT CANBY, OR 97013
- Mailing Phone
- (503) 266-7810
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-05-2006
- Last Update Date
- 07-08-2007
- Code Navigator
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
Technician/Technologist Optician
- Taxonomy Code
- 156FX1800X
- Type
- Eye and Vision Services Providers
- License No.
- 1967
- License State
- WA
- Taxonomy Description
- Opticians help fit eyeglasses and contact lenses, following prescriptions from Ophthalmologists and Optometrists. They also help customers decide which eyeglass frame or contact lenses to buy.
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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 1720174782, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 68 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1720174782, enumerated as an "individual" on October 05, 2006.
The provider is located at 3600 N INTERSTATE AVE PORTLAND, OR 97227 and the phone number is (503) 249-3429.
Technician/Technologist with taxonomy code 156FX1800X and a focus in Optician.
