WILLIAM R CLEGG M.D.
NPI 1790717403
Ophthalmology in Loma Linda, CA

NPI Status: Active since July 06, 2006

Contact Information

11370 ANDERSON ST
SUITE 1800
LOMA LINDA, CA
ZIP 92354
Phone: (909) 558-2180

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  • Individual
  • Male
  • Ophthalmology

About WILLIAM CLEGG

This page provides the complete NPI Profile along with additional information for William Clegg, a provider established in Loma Linda, California with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1790717403 assigned on July 2006. The practitioner's primary taxonomy code is 207W00000X with license number A20217 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1790717403
Provider Name
WILLIAM R CLEGG M.D.
Gender
Male
Entity Type
Individual
Location Address
11370 ANDERSON ST SUITE 1800 LOMA LINDA, CA 92354
Location Phone
(909) 558-2180
Mailing Address
54701 FILE NUMBER LOS ANGELES, CA 90074
Mailing Phone
(909) 558-3111
Is Sole Proprietor?
No
Enumeration Date
07-06-2006
Last Update Date
09-24-2007
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Ophthalmologists like William Clegg specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
A20217
License State
CA
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

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
00A202170MEDICAID (05)CA 
00A202171MEDICARE PIN (08)CA 
A22073MEDICARE UPIN (02) 

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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 1790717403, 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 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
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
1
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
4
Unchanged
Pos 9
0
Doubled → 0
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 7 → 14 → 5 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 8 + 0 + 1 + 4 + 1 + 1 + 4 + 4 + 0 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1790717403.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Pediatrics
11370 ANDERSON ST, STE B-100
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, STE. 2100
LOMA LINDA, CA 92354
Thoracic Surgery (Cardiothoracic Vascular Surgery)
11370 ANDERSON ST, STE 2100
LOMA LINDA, CA 92354
Otolaryngology
11370 ANDERSON ST, STE 2100
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354
Ophthalmology
11370 ANDERSON ST, SUITE 1800
LOMA LINDA, CA 92354
Pediatrics
11370 ANDERSON ST, SUITE B-100
LOMA LINDA, CA 92354
Radiology (Diagnostic Radiology)
11370 ANDERSON ST
LOMA LINDA, CA 92354
Psychiatry & Neurology (Neurology)
11370 ANDERSON ST, SUITE 2400
LOMA LINDA, CA 92354
Internal Medicine
11370 ANDERSON ST, STE 3150
LOMA LINDA, CA 92354
Urology
11370 ANDERSON ST, SUITE 1100
LOMA LINDA, CA 92354
Orthopaedic Surgery (Hand Surgery)
11370 ANDERSON ST, SUITE 1500
LOMA LINDA, CA 92354
Internal Medicine (Medical Oncology)
11370 ANDERSON ST
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354
Internal Medicine (Hematology & Oncology)
11370 ANDERSON ST, SUITE 3650
LOMA LINDA, CA 92354
Otolaryngology
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354
Surgery
11370 ANDERSON ST, SUITE 2100
LOMA LINDA, CA 92354

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790717403, enumerated as an "individual" on July 06, 2006.

The provider is located at 11370 ANDERSON ST SUITE 1800 LOMA LINDA, CA 92354 and the phone number is (909) 558-2180.

Ophthalmology with taxonomy code 207W00000X.

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