CALLISTA SURGERY CENTER, LLC
NPI 1144090390
Clinic/Center - Ambulatory Surgical in Walnut Creek, CA

NPI Status: Active since January 08, 2024

Contact Information

355 LENNON LN STE 275
WALNUT CREEK, CA
ZIP 94598
Phone: (925) 357-9050

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  • Organization
  • Clinic/Center
  • Ambulatory Surgical
  • CLIA Number: 05D2305026
  • CLIA Cert. Type: Ambulatory Surgery Center
  • CLIA Exp. Date: 05-21-2028

About CALLISTA SURGERY CENTER, LLC

This page provides the complete NPI Profile along with additional information for Callista Surgery Center, Llc, a provider established in Walnut Creek, California operating as a Clinic/center, focusing in ambulatory surgical . The healthcare provider is registered in the NPI registry with number 1144090390 assigned on January 2024. The practitioner's primary taxonomy code is 261QA1903X. The provider is registered as an organization and their NPI record was last updated 3 years ago. The authorized official of this NPI record is Rahul Seth Md (Medical Director)

NPI
1144090390
Provider Name
CALLISTA SURGERY CENTER, LLC
Entity Type
Organization
Location Address
355 LENNON LN STE 275 WALNUT CREEK, CA 94598
Location Phone
(925) 357-9050
Mailing Address
370 N WIGET LN STE 250 WALNUT CREEK, CA 94598
Mailing Phone
(925) 357-9050
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-08-2024
Last Update Date
01-08-2024
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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

Clinic/Center Ambulatory Surgical

Taxonomy Code
261QA1903X
Type
Ambulatory Health Care Facilities

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

RAHUL SETH MD

Authorized Official Title
MEDICAL DIRECTOR
Authorized Official Phone
(925) 357-9050

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
05D2305026
Facility Type
Ambulatory Surgery Center
Certificate Effective Date
May 22, 2026
Certificate Expiration Date
May 21, 2028
Laboratory Director
RAHUL SETH
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Callista Surgery Center, Llc 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 1144090390, 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 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
1
Unchanged
Pos 3
4
Doubled → 8
Pos 4
4
Unchanged
Pos 5
0
Doubled → 0
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
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 4 → 8 0 → 0 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 0 + 9 + 0 + 3 + 1 + 8 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1144090390.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144090390, enumerated as an "organization" on January 08, 2024.

The provider is located at 355 LENNON LN STE 275 WALNUT CREEK, CA 94598 and the phone number is (925) 357-9050.

Clinic/Center with taxonomy code 261QA1903X and a focus in Ambulatory Surgical.