DR. CHANG D. CHAN O.D.
NPI 1649308545
Optometrist in West Sacramento, CA
NPI Status: Active since March 01, 2007
Contact Information
1029 JEFFERSON BLVD
STE. G
WEST SACRAMENTO, CA
ZIP 95691
Phone: (916) 371-3421
Fax: (916) 371-3421
- Individual
- Male
- Optometrist
About CHANG CHAN
This page provides the complete NPI Profile along with additional information for Chang Chan, a provider established in West Sacramento, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1649308545 assigned on March 2007. The practitioner's primary taxonomy code is 152W00000X with license number 5641TPA (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.
- NPI
- 1649308545
- Provider Name
- DR. CHANG D. CHAN O.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1029 JEFFERSON BLVD STE. G WEST SACRAMENTO, CA 95691
- Location Phone
- (916) 371-3421
- Location Fax
- (916) 371-3421
- Mailing Address
- 1029 JEFFERSON BLVD STE. G WEST SACRAMENTO, CA 95691
- Mailing Phone
- (916) 371-3421
- Mailing Fax
- (916) 371-3421
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-01-2007
- 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
Optometrist
- Taxonomy Code
- 152W00000X
- Type
- Eye and Vision Services Providers
- License No.
- 5641TPA
- License State
- CA
- Taxonomy Description
- Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 6 | 4 | 9 | 3 | 0 | 8 | 5 | 4 | 5 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 8 | 9 | 6 | 0 | 16 | 5 | 8 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 8 + 9 + 6 + 0 + 1 + 6 + 5 + 8 + 24 = 75 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 80 - 75 = 5 | 5 | ||||||||
The NPI number 1649308545 is valid because the calculated check digit 5 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 3 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1801946769 | DR. MARTIN D. L. CHAN D.D.S. Individual | Dentist | 1029 JEFFERSON BLVD STE. E WEST SACRAMENTO, CA 95691 (916) 371-8913 |
| 1750837365 | DR. TUAN ANH VO PHARM.D. Individual | Pharmacist | 1029 JEFFERSON BLVD SUITE A WEST SACRAMENTO, CA 95691 (916) 371-2022 |
| 1821081910 | DR. BEATLE THIEN-PHUOC TRAN PHARMD Individual | Pharmacy (Community/Retail Pharmacy) | 1029 JEFFERSON BLVD SUITE A WEST SACRAMENTO, CA 95691 (916) 371-2022 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1649308545, enumerated in the NPI registry as an "individual" on March 01, 2007
The provider is located at 1029 Jefferson Blvd Ste. G West Sacramento, Ca 95691 and the phone number is (916) 371-3421
The provider's speciality is Optometrist with taxonomy code 152W00000X
This NPI record was last updated on March 01, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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