DR. GENE D CALKINS O.D.
NPI 1568425569
Optometrist in San Pedro, CA

NPI Status: Active since April 10, 2006

Contact Information

571 W 7TH ST
SAN PEDRO, CA
ZIP 90731
Phone: (310) 831-1201
Fax: (310) 833-0698

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  • Individual
  • Male
  • Optometrist

About GENE CALKINS

This page provides the complete NPI Profile along with additional information for Gene Calkins, a provider established in San Pedro, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1568425569 assigned on April 2006. The practitioner's primary taxonomy code is 152W00000X with license number CA4919T (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1568425569
Provider Name
DR. GENE D CALKINS O.D.
Gender
Male
Entity Type
Individual
Location Address
571 W 7TH ST SAN PEDRO, CA 90731
Location Phone
(310) 831-1201
Location Fax
(310) 833-0698
Mailing Address
571 W 7TH ST SAN PEDRO, CA 90731
Mailing Phone
(310) 831-1201
Mailing Fax
(310) 833-0698
Is Sole Proprietor?
No
Enumeration Date
04-10-2006
Last Update Date
03-20-2008
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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.
CA4919T
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
WOP4919BMEDICARE ID-TYPE UNSPECIFIED (04)CA 
0368490001MEDICARE NSC (07)CA 
T69966MEDICARE UPIN (02)CA 
SD0049190MEDICAID (05)CA 

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Analysis of substance using immunoassay technique, multiple step method

This procedure involves the use of an immunoassay, a highly sensitive technique, to detect and measure substances in your body. It involves multiple steps and is commonly used in diagnosing and monitoring various health conditions.

This service was performed 27 times for 13 patients

Established patient complete exam of visual system

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

This service was performed 65 times for 60 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 26 times for 22 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 12 times for 11 patients

Established patient problem focused exam of visual system

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

This service was performed 101 times for 70 patients

Exam of visual field with extended testing

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

This service was performed 49 times for 39 patients

Imaging of optic nerve

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

This service was performed 46 times for 32 patients

Imaging of retina

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

This service was performed 65 times for 48 patients

Microfluid analysis of tears

Microfluid analysis of tears involves collecting a small tear sample to examine its composition. This procedure can help detect health issues like dry eye disease, inflammation, or other eye conditions. It's a non-invasive, painless method for monitoring eye health.

This service was performed 27 times for 14 patients

Photography of the retina

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

This service was performed 123 times for 121 patients

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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 1568425569, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
5
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
8
Unchanged
Pos 5
4
Doubled → 8
Pos 6
2
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 6 → 12 → 3 4 → 8 5 → 10 → 1 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 2 + 8 + 8 + 2 + 1 + 0 + 5 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1568425569.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Ophthalmology
571 W 7TH ST
SAN PEDRO, CA 90731
Optometrist
571 W 7TH ST
SAN PEDRO, CA 90731
Ophthalmology
571 W 7TH ST
SAN PEDRO, CA 90731

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1568425569, enumerated as an "individual" on April 10, 2006.

The provider is located at 571 W 7TH ST SAN PEDRO, CA 90731 and the phone number is (310) 831-1201.

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.