GABRIELA MARIA GRYCZYNSKI
NPI 1699018341
Counselor - Addiction (Substance Use Disorder) in Menlo Park, CA

NPI Status: Active since April 01, 2013

Contact Information

795 WILLOW RD BLDG 332
MENLO PARK, CA
ZIP 94025
Phone: (650) 376-8641

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  • Individual
  • Female
  • Counselor
  • Addiction (Substance Use Disorder)

About GABRIELA GRYCZYNSKI

This page provides the complete NPI Profile along with additional information for Gabriela Gryczynski, a provider established in Menlo Park, California with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1699018341 assigned on April 2013. The practitioner's primary taxonomy code is 101YA0400X. The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1699018341
Provider Name
GABRIELA MARIA GRYCZYNSKI
Gender
Female
Entity Type
Individual
Location Address
795 WILLOW RD BLDG 332 MENLO PARK, CA 94025
Location Phone
(650) 376-8641
Mailing Address
795 WILLOW RD BLDG 332 MENLO PARK, CA 94025
Is Sole Proprietor?
No
Enumeration Date
04-01-2013
Last Update Date
05-29-2026
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A Substance Abuse or Addiction Counselor like Gabriela Gryczynski advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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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

Counselor Addiction (Substance Use Disorder)

Taxonomy Code
101YA0400X
Type
Behavioral Health & Social Service Providers

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)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

 

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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 1699018341, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
9
Doubled → 18 → 1 + 8
Pos 4
9
Unchanged
Pos 5
0
Doubled → 0
Pos 6
1
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
3
Unchanged
Pos 9
4
Doubled → 8
Check
1
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 9 → 18 → 9 0 → 0 8 → 16 → 7 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 8 + 9 + 0 + 1 + 1 + 6 + 3 + 8 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1699018341.

Other Providers at the Same Location


The following 18 providers are registered at the same or a nearby location.

Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Exclusive Provider Organization
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Peer Specialist
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Registered Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Licensed Vocational Nurse
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025
Counselor (Addiction (Substance Use Disorder))
795 WILLOW RD BLDG 332
MENLO PARK, CA 94025

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1699018341, enumerated as an "individual" on April 01, 2013.

The provider is located at 795 WILLOW RD BLDG 332 MENLO PARK, CA 94025 and the phone number is (650) 376-8641.

Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).