SAMUEL JEFRI GRADY LPCC
NPI 1750913638
Counselor - Professional in San Francisco, CA

Q: What is the provider's specialty?

The provider's specialty is Counselor with taxonomy code 101YP2500X and a focus in Professional.

NPI Status: Active since February 07, 2020

Contact Information

760 HARRISON ST
SAN FRANCISCO, CA
ZIP 94107
Phone: (628) 754-8700
Fax: (628) 754-8691

Recently Updated NPI Information
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.

NPPES record last updated: July 10, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 10, 2026, Oct 31, 2023, May 3, 2021 and 1 more (4 updates tracked since 2020).

Table of Contents

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Counselor
Professional

About SAMUEL GRADY

This page provides the complete NPI Profile along with additional information for Samuel Grady, a provider established in San Francisco, California with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1750913638 assigned on February 2020. The practitioner's primary taxonomy code is 101YP2500X with license number 22972 (CA). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI: 1750913638
Provider Name: SAMUEL JEFRI GRADY LPCC
Gender: Male
Entity Type: Individual
Location Address: 760 HARRISON ST SAN FRANCISCO, CA 94107
Location Phone: (628) 754-8700
Location Fax: (628) 754-8691
Mailing Address: 760 HARRISON ST SAN FRANCISCO, CA 94107
Mailing Phone: (628) 754-8700
Mailing Fax: (628) 754-8691
Is Sole Proprietor?: No
Enumeration Date: 02-07-2020
Last Update Date: 07-10-2026
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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: Counselor Professional
Taxonomy Code: 101YP2500X
Type: Behavioral Health & Social Service Providers
License No.: 22972
License State: CA

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 1750913638, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 6

Check

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 5 → 10 → 1 9 → 18 → 9 3 → 6 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 1 + 8 + 1 + 6 + 6 + 6 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1750913638.