RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR
NPI 1265825327
Ophthalmology in Long Beach, CA

NPI Status: Active since March 13, 2015

Contact Information

3816 WOODRUFF AVE
STE. 100
LONG BEACH, CA
ZIP 90808
Phone: (562) 424-0931
Fax: (562) 492-9400

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  • Organization
  • Ophthalmology

About RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR

This page provides the complete NPI Profile along with additional information for Retina Institute Of California Medical Group, A California Medical Par, a provider established in Long Beach, California operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1265825327 assigned on March 2015. The practitioner's primary taxonomy code is 207W00000X. The provider is registered as an organization and their NPI record was last updated 5 years ago. Retina Institute Of California Medical Group, A California Medical Par 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 Dr. Tom S Chang Md (Owner)

NPI
1265825327
Provider Name
RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR
Entity Type
Organization
Location Address
3816 WOODRUFF AVE STE. 100 LONG BEACH, CA 90808
Location Phone
(562) 424-0931
Location Fax
(562) 492-9400
Mailing Address
100 E CALIFORNIA BLVD PASADENA, CA 91105
Mailing Phone
(626) 568-8838
Mailing Fax
(562) 492-9400
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-13-2015
Last Update Date
07-19-2021
Code Navigator

Ophthalmologists like Retina Institute Of California Medical Group, A California Medical Par 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.

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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
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.

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)
2174400000XOther Service Providers

Specialist

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

DR. TOM S CHANG MD

Authorized Official Title
OWNER
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
1760541569OTHER (01)CAGROUP NPI

Reviews for RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR

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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 1265825327, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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
2
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
2
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
Check
7
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 8 → 16 → 7 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 2 + 5 + 1 + 6 + 2 + 1 + 0 + 3 + 4 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1265825327.

Other Providers at the Same Location


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

Physical Therapist
3816 WOODRUFF AVE, #407
LONG BEACH, CA 90808
Allergy & Immunology
3816 WOODRUFF AVE, SUITE 209
LONG BEACH, CA 90808
Physical Therapist
3816 WOODRUFF AVE, #407
LONG BEACH, CA 90808
Internal Medicine
3816 WOODRUFF AVE, SUITE 401
LONG BEACH, CA 90808
Internal Medicine
3816 WOODRUFF AVE, SUITE 412
LONG BEACH, CA 90808
Internal Medicine (Rheumatology)
3816 WOODRUFF AVE, SUITE 412
LONG BEACH, CA 90808
Family Medicine
3816 WOODRUFF AVE, #406
LONG BEACH, CA 90808
Audiologist-Hearing Aid Fitter
3816 WOODRUFF AVE, SUITE 305
LONG BEACH, CA 90808
Pathology (Anatomic Pathology & Clinical Pathology)
3816 WOODRUFF AVE, STE 104
LONG BEACH, CA 90808
Clinical Medical Laboratory
3816 WOODRUFF AVE, STE. 104
LONG BEACH, CA 90808
Internal Medicine (Pulmonary Disease)
3816 WOODRUFF AVE, STE # 307
LONG BEACH, CA 90808
Internal Medicine (Gastroenterology)
3816 WOODRUFF AVE, STE # 307
LONG BEACH, CA 90808
Urology
3816 WOODRUFF AVE, SUITE 309
LONG BEACH, CA 90808
Pathology (Clinical Pathology/Laboratory Medicine)
3816 WOODRUFF AVE
LONG BEACH, CA 90808
Podiatrist
3816 WOODRUFF AVE, STE 302
LONG BEACH, CA 90808
Dentist
3816 WOODRUFF AVE, SUITE 310
LONG BEACH, CA 90808
Nurse Practitioner (Family)
3816 WOODRUFF AVE
LONG BEACH, CA 90808
Family Medicine
3816 WOODRUFF AVE, SUITE 312
LONG BEACH, CA 90808
Acupuncturist
3816 WOODRUFF AVE, SUITE 101
LONG BEACH, CA 90808
Specialist
3816 WOODRUFF AVE, SUITE #307
LONG BEACH, CA 90808

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265825327, enumerated as an "organization" on March 13, 2015.

The provider is located at 3816 WOODRUFF AVE STE. 100 LONG BEACH, CA 90808 and the phone number is (562) 424-0931.

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.