DR. JOSEPH DAVID WONG O.D. , C.R.A.
NPI 1992741763
Optometrist in Walnut Creek, CA

NPI Status: Active since June 21, 2006

Contact Information

1220 ROSSMOOR PKWY
WALNUT CREEK, CA
ZIP 94595
Phone: (925) 988-7560
Fax: (925) 256-6392

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  • Individual
  • Male
  • Optometrist

About JOSEPH WONG

This page provides the complete NPI Profile along with additional information for Joseph Wong, a provider established in Walnut Creek, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1992741763 assigned on June 2006. The practitioner's primary taxonomy code is 152W00000X with license number OPT5795T (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1992741763
Provider Name
DR. JOSEPH DAVID WONG O.D. , C.R.A.
Gender
Male
Entity Type
Individual
Location Address
1220 ROSSMOOR PKWY WALNUT CREEK, CA 94595
Location Phone
(925) 988-7560
Location Fax
(925) 256-6392
Mailing Address
6880 CHARING CROSS RD BERKELEY, CA 94705
Is Sole Proprietor?
No
Enumeration Date
06-21-2006
Last Update Date
07-08-2007
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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

Taxonomy Code
152W00000X
Type
Eye and Vision Services Providers
License No.
OPT5795T
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.

Insurance Plans Accepted

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

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

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

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
SD0057950MEDICARE ID-TYPE UNSPECIFIED (04)CA 
T10123MEDICARE UPIN (02)CA 

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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 1992741763, 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
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
3
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 9 → 18 → 9 7 → 14 → 5 1 → 2 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 1 + 4 + 4 + 2 + 7 + 1 + 2 + 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 1992741763.

Other Providers at the Same Location


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

Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Hospitalist
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Nurse Practitioner
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Pharmacy (Community/Retail Pharmacy)
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Hospitalist
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Hospitalist
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Urology
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1220 ROSSMOOR PKWY
WALNUT CREEK, CA 94595

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992741763, enumerated as an "individual" on June 21, 2006.

The provider is located at 1220 ROSSMOOR PKWY WALNUT CREEK, CA 94595 and the phone number is (925) 988-7560.

Optometrist with taxonomy code 152W00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.