RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP
NPI 1639562291
Specialist in Pomona, CA

NPI Status: Active since March 06, 2015

Contact Information

160 E ARTESIA ST
STE. 120
POMONA, CA
ZIP 91767
Phone: (909) 629-5965
Fax: (909) 629-5968

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  • Organization
  • Specialist

About RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP

This page provides the complete NPI Profile along with additional information for Retina Institute Of California Medical Group, a provider established in Pomona, California operating as a Specialist. The healthcare provider is registered in the NPI registry with number 1639562291 assigned on March 2015. The practitioner's primary taxonomy code is 174400000X with license number A69909 (CA). The provider is registered as an organization and their NPI record was last updated 11 years ago. Retina Institute Of California Medical Group operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Tom S Chang M.d. (Founder)

NPI
1639562291
Provider Name
RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP
Entity Type
Organization
Location Address
160 E ARTESIA ST STE. 120 POMONA, CA 91767
Location Phone
(909) 629-5965
Location Fax
(909) 629-5968
Mailing Address
100 E CALIFORNIA BLVD PASADENA, CA 91105
Mailing Phone
(626) 568-8838
Mailing Fax
(909) 629-5968
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-06-2015
Last Update Date
03-06-2015
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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

Specialist

Taxonomy Code
174400000X
Type
Other Service Providers
License No.
A69909
License State
CA
Taxonomy Description
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1152W00000XEye and Vision Services Providers

Optometrist

A69909 (CA)

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

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.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

TOM S CHANG M.D.

Authorized Official Title
FOUNDER
Authorized Official Phone
(626) 568-8838

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
BW463AMEDICARE UPIN (02)CA 
1760541569OTHER (01)CAGROUP NPI
W20602MEDICARE 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 1639562291, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
6
Unchanged
Pos 3
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
6
Unchanged
Pos 7
2
Doubled → 4
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
1
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 3 → 6 5 → 10 → 1 2 → 4 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 1 + 0 + 6 + 4 + 2 + 1 + 8 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1639562291.

Other Providers at the Same Location


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

Urology
160 E ARTESIA ST, SUITE 220
POMONA, CA 91767
Obstetrics & Gynecology
160 E ARTESIA ST, SUITE 330
POMONA, CA 91767
Internal Medicine (Cardiovascular Disease)
160 E ARTESIA ST, SUITE 255
POMONA, CA 91767
Thoracic Surgery (Cardiothoracic Vascular Surgery)
160 E ARTESIA ST, SUITE 355
POMONA, CA 91767
Internal Medicine
160 E ARTESIA ST, SUITE 225
POMONA, CA 91767
Internal Medicine (Gastroenterology)
160 E ARTESIA ST, 140
POMONA, CA 91767
Dentist (General Practice)
160 E ARTESIA ST, SUITE 125
POMONA, CA 91767
Dentist (General Practice)
160 E ARTESIA ST, SUITE 125
POMONA, CA 91767
Ophthalmology
160 E ARTESIA ST, ST 325
POMONA, CA 91767
Surgery
160 E ARTESIA ST, SUITE 355
POMONA, CA 91767
Internal Medicine
160 E ARTESIA ST, SUITE 310
POMONA, CA 91767
Internal Medicine
160 E ARTESIA ST, SUITE 310
POMONA, CA 91767
Internal Medicine
160 E ARTESIA ST, SUITE 225
POMONA, CA 91767
Internal Medicine (Gastroenterology)
160 E ARTESIA ST, SUITE 140
POMONA, CA 91767
Neurological Surgery
160 E ARTESIA ST, SUITE 360
POMONA, CA 91767
Specialist
160 E ARTESIA ST, SUITE 355
POMONA, CA 91767
Neurological Surgery
160 E ARTESIA ST, SUITE # 220
POMONA, CA 91767
Family Medicine
160 E ARTESIA ST, SUITE 225
POMONA, CA 91767
Nurse Practitioner (Family)
160 E ARTESIA ST, SUITE 220
POMONA, CA 91767
Orthopaedic Surgery
160 E ARTESIA ST, SUITE 360
POMONA, CA 91767

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639562291, enumerated as an "organization" on March 06, 2015.

The provider is located at 160 E ARTESIA ST STE. 120 POMONA, CA 91767 and the phone number is (909) 629-5965.

Specialist with taxonomy code 174400000X.

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