THE RETINA PARTNERS
NPI 1689945990
Ophthalmology in Encino, CA

NPI Status: Active since January 18, 2012

Contact Information

16500 VENTURA BLVD
SUITE 250
ENCINO, CA
ZIP 91436
Phone: (818) 788-9333
Fax: (818) 788-9273

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  • Organization
  • Ophthalmology
  • CLIA Number: 05D2113980
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 06-02-2028

About THE RETINA PARTNERS

This page provides the complete NPI Profile along with additional information for The Retina Partners, a provider established in Encino, California operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1689945990 assigned on January 2012. The practitioner's primary taxonomy code is 207W00000X with license number A90804 (CA). The provider is registered as an organization and their NPI record was last updated 11 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Hajir Dadgostar M.d.,phd. (Vice President)

NPI
1689945990
Provider Name
THE RETINA PARTNERS
Entity Type
Organization
Location Address
16500 VENTURA BLVD SUITE 250 ENCINO, CA 91436
Location Phone
(818) 788-9333
Location Fax
(818) 788-9273
Mailing Address
16500 VENTURA BLVD SUITE 250 ENCINO, CA 91436
Mailing Phone
(818) 788-9333
Mailing Fax
(818) 788-9273
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-18-2012
Last Update Date
01-05-2015
Code Navigator

Ophthalmologists like The Retina Partners 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
License No.
A90804
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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

HAJIR DADGOSTAR M.D.,PHD.

Authorized Official Title
VICE PRESIDENT
Authorized Official Phone
(818) 788-9333

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
05D2113980
Facility Type
Physician Office
Certificate Effective Date
June 03, 2026
Certificate Expiration Date
June 02, 2028
Laboratory Director
ROBERT E. ENGSTROM
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to The Retina Partners to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1689945990, we treat the final digit (0) 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 80. The final step is to find the difference between that total and the next multiple of ten (80 - 80 = 0).

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
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
0
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 8 → 16 → 7 9 → 18 → 9 5 → 10 → 1 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 + 1 + 6 + 9 + 1 + 8 + 4 + 1 + 0 + 9 + 1 + 8 + 24 = 80

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

The next multiple of ten after 80 is 80. The difference is the calculated check digit.

80 - 80 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1689945990.

Other Providers at the Same Location


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

Ophthalmology
16500 VENTURA BLVD, SUITE 250
ENCINO, CA 91436
Physical Medicine & Rehabilitation
16500 VENTURA BLVD, SUITE 414
ENCINO, CA 91436
Obstetrics & Gynecology
16500 VENTURA BLVD, STE 222
ENCINO, CA 91436
Ophthalmology
16500 VENTURA BLVD, SUITE 250
ENCINO, CA 91436
Pain Medicine (Interventional Pain Medicine)
16500 VENTURA BLVD, SUITE 375
ENCINO, CA 91436
Ophthalmology
16500 VENTURA BLVD, SUITE 250
ENCINO, CA 91436
Physical Medicine & Rehabilitation
16500 VENTURA BLVD, 360
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD, STE. 414
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD, SUITE 414
ENCINO, CA 91436
Specialist
16500 VENTURA BLVD, SUITE 360
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD, SUITE 414
ENCINO, CA 91436
Early Intervention Provider Agency
16500 VENTURA BLVD, SUITE #414
ENCINO, CA 91436
Otolaryngology
16500 VENTURA BLVD, SUITE 320
ENCINO, CA 91436
Behavior Analyst
16500 VENTURA BLVD
ENCINO, CA 91436
Behavior Analyst
16500 VENTURA BLVD, SUITE 414
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD
ENCINO, CA 91436
Specialist/Technologist (Speech-Language Assistant)
16500 VENTURA BLVD, STE 414
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD, STE 414
ENCINO, CA 91436
Speech-Language Pathologist
16500 VENTURA BLVD, STE 414
ENCINO, CA 91436
Specialist/Technologist (Speech-Language Assistant)
16500 VENTURA BLVD, STE 414
ENCINO, CA 91436

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689945990, enumerated as an "organization" on January 18, 2012.

The provider is located at 16500 VENTURA BLVD SUITE 250 ENCINO, CA 91436 and the phone number is (818) 788-9333.

Ophthalmology with taxonomy code 207W00000X.