POST STREET SURGERY CENTER, LLC
NPI 1639252760
Clinic/Center - Ambulatory Surgical in San Francisco, CA

NPI Status: Active since October 23, 2006

Contact Information

2299 POST ST
STE. 108
SAN FRANCISCO, CA
ZIP 94115
Phone: (415) 923-3770

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  • Organization
  • Clinic/Center
  • Ambulatory Surgical
  • CLIA Number: 05D1050912
  • CLIA Cert. Type: Ambulatory Surgery Center
  • CLIA Exp. Date: 02-14-2028

About POST STREET SURGERY CENTER, LLC

This page provides the complete NPI Profile along with additional information for Post Street Surgery Center, Llc, a provider established in San Francisco, California operating as a Clinic/center, focusing in ambulatory surgical . The healthcare provider is registered in the NPI registry with number 1639252760 assigned on October 2006. The practitioner's primary taxonomy code is 261QA1903X. The provider is registered as an organization and their NPI record was last updated 8 years ago. The authorized official of this NPI record is Mr. Leonard Gordon M.d. (Owner)

NPI
1639252760
Provider Name
POST STREET SURGERY CENTER, LLC
Entity Type
Organization
Location Address
2299 POST ST STE. 108 SAN FRANCISCO, CA 94115
Location Phone
(415) 923-3770
Mailing Address
2299 POST ST STE 108 SAN FRANCISCO, CA 94115
Mailing Phone
(415) 923-3770
Mailing Fax
(415) 923-3779
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
10-23-2006
Last Update Date
07-13-2018
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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

MR. LEONARD GORDON M.D.

Authorized Official Title
OWNER
Authorized Official Phone
(415) 923-3770

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

This service was performed 17 times for 14 patients

Injection of substance into lower spine canal using imaging guidance

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

This service was performed 64 times for 60 patients

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
05D1050912
Facility Type
Ambulatory Surgery Center
Certificate Effective Date
February 15, 2026
Certificate Expiration Date
February 14, 2028
Laboratory Director
LEONARD GORDON
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Post Street 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.

Reviews for POST STREET SURGERY CENTER, LLC

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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 1639252760, 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 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
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
2
Doubled → 4
Pos 6
5
Unchanged
Pos 7
2
Doubled → 4
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 3 → 6 2 → 4 2 → 4 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 4 + 5 + 4 + 7 + 1 + 2 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1639252760.

Other Providers at the Same Location


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

Psychiatry & Neurology (Neurology)
2299 POST ST, SUITE 102
SAN FRANCISCO, CA 94115
Psychiatry & Neurology (Neurology)
2299 POST ST, SUITE 206
SAN FRANCISCO, CA 94115
Marriage & Family Therapist
2299 POST ST, SUITE 211
SAN FRANCISCO, CA 94115
Orthopaedic Surgery
2299 POST ST, STE 107
SAN FRANCISCO, CA 94115
Psychiatry & Neurology (Neurology)
2299 POST ST, SUITE #206
SAN FRANCISCO, CA 94115
Orthopaedic Surgery
2299 POST ST, #107
SAN FRANCISCO, CA 94115
Internal Medicine
2299 POST ST, STE 205
SAN FRANCISCO, CA 94115
Dentist (General Practice)
2299 POST ST, SUITE 101
SAN FRANCISCO, CA 94115
Internal Medicine
2299 POST ST, SUITE 303
SAN FRANCISCO, CA 94115
Internal Medicine (Nephrology)
2299 POST ST, #203
SAN FRANCISCO, CA 94115
Internal Medicine
2299 POST ST, SUITE # 203
SAN FRANCISCO, CA 94115
Dentist (Prosthodontics)
2299 POST ST, SUITE 302
SAN FRANCISCO, CA 94115
Physician Assistant (Surgical)
2299 POST ST, SUITE 107
SAN FRANCISCO, CA 94115
Orthopaedic Surgery
2299 POST ST, SUITE 107
SAN FRANCISCO, CA 94115
Orthopaedic Surgery
2299 POST ST, SUITE 103
SAN FRANCISCO, CA 94115
Anesthesiology (Pain Medicine)
2299 POST ST, SUITE 205
SAN FRANCISCO, CA 94115
Clinic/Center (Medical Specialty)
2299 POST ST, SUITE 207
SAN FRANCISCO, CA 94115
Clinic/Center (Radiology)
2299 POST ST, SUITE 103
SAN FRANCISCO, CA 94115
Marriage & Family Therapist
2299 POST ST, SUITE 211
SAN FRANCISCO, CA 94115
Family Medicine
2299 POST ST, SUITE 201
SAN FRANCISCO, CA 94115

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639252760, enumerated as an "organization" on October 23, 2006.

The provider is located at 2299 POST ST STE. 108 SAN FRANCISCO, CA 94115 and the phone number is (415) 923-3770.

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