CALIFORNIA KIDNEY SPECIALISTS
NPI 1760497457
Internal Medicine - Nephrology in San Dimas, CA

NPI Status: Active since July 30, 2006

Contact Information

1335 W CYPRESS AVE
SAN DIMAS, CA
ZIP 91773
Phone: (909) 542-2770
Fax: (909) 394-1800

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  • Organization
  • Internal Medicine
  • Nephrology
  • CLIA Number: 05D1057202
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 08-03-2026

About CALIFORNIA KIDNEY SPECIALISTS

This page provides the complete NPI Profile along with additional information for California Kidney Specialists, an internist established in San Dimas, California operating as a Internal Medicine, focusing in nephrology . The healthcare provider is registered in the NPI registry with number 1760497457 assigned on July 2006. The practitioner's primary taxonomy code is 207RN0300X. The provider is registered as an organization and their NPI record was last updated 14 years ago. California Kidney Specialists 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 Ms. Roya Tahmassebi (Office Manager)

NPI
1760497457
Provider Name
CALIFORNIA KIDNEY SPECIALISTS
Entity Type
Organization
Location Address
1335 W CYPRESS AVE SAN DIMAS, CA 91773
Location Phone
(909) 542-2770
Location Fax
(909) 394-1800
Mailing Address
1335 W CYPRESS AVE SAN DIMAS, CA 91773
Mailing Phone
(909) 542-2770
Mailing Fax
(909) 394-1800
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
07-30-2006
Last Update Date
03-16-2012
Code Navigator

An internist like California Kidney Specialists is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine Nephrology

Taxonomy Code
207RN0300X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

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)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

 

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.

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

MS. ROYA TAHMASSEBI

Authorized Official Title
OFFICE MANAGER
Authorized Official Phone
(909) 542-2770

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
05D1057202
Facility Type
Physician Office
Certificate Effective Date
August 04, 2024
Certificate Expiration Date
August 03, 2026
Laboratory Director
SYED A. RIZVI, MD
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to California Kidney Specialists 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 1760497457, 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 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
7
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
0
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
4
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 4 → 8 7 → 14 → 5 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 2 + 0 + 8 + 9 + 1 + 4 + 4 + 1 + 0 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1760497457.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
1335 W CYPRESS AVE, SUITE 102
SAN DIMAS, CA 91773
Internal Medicine (Nephrology)
1335 W CYPRESS AVE, SUITE # 205
SAN DIMAS, CA 91773
Internal Medicine (Nephrology)
1335 W CYPRESS AVE, SUITE # 205
SAN DIMAS, CA 91773
Internal Medicine (Nephrology)
1335 W CYPRESS AVE, SUITE # 205
SAN DIMAS, CA 91773
Physical Therapist
1335 W CYPRESS AVE, SUITE 100
SAN DIMAS, CA 91773
Physical Therapist
1335 W CYPRESS AVE, SUITE 100
SAN DIMAS, CA 91773
Physical Therapist
1335 W CYPRESS AVE, SUITE 100
SAN DIMAS, CA 91773

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1760497457, enumerated as an "organization" on July 30, 2006.

The provider is located at 1335 W CYPRESS AVE SAN DIMAS, CA 91773 and the phone number is (909) 542-2770.

Internal Medicine with taxonomy code 207RN0300X and a focus in Nephrology.