ALLISON PIERCE-GAY
NPI 1619821691
Marriage & Family Therapist in Santa Rosa, CA
NPI Status: Active since February 25, 2026
Contact Information
341 IRWIN LN
SANTA ROSA, CA
ZIP 95401
Phone: (707) 360-1500
- Individual
- Female
- Marriage & Family Therapist
About ALLISON PIERCE-GAY
This page provides the complete NPI Profile along with additional information for Allison Pierce-gay, a provider established in Santa Rosa, California with a medical specialization in Marriage & Family Therapist. The healthcare provider is registered in the NPI registry with number 1619821691 assigned on February 2026. The practitioner's primary taxonomy code is 106H00000X with license number 158399 (CA). The provider is registered as an individual and her NPI record was last updated February 2026.
- NPI
- 1619821691
- Provider Name
- ALLISON PIERCE-GAY
- Other Name
- ALLISON PIERCE
- Other Name Type
- Former Name (1)
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 341 IRWIN LN SANTA ROSA, CA 95401
- Location Phone
- (707) 360-1500
- Mailing Address
- 341 IRWIN LN SANTA ROSA, CA 95401
- Mailing Phone
- (707) 360-1500
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-25-2026
- Last Update Date
- 02-25-2026
- Code Navigator
A marriage and family therapist like Allison Pierce-gay help patients manage problems with their family and other relationships. Marriage and family therapists encourage clients to discuss their emotions and experiences and, develop strategies and skills to change behavior and cope with difficult situations. Many therapists apply cognitive behavioral therapy to help patients understand harmful thoughts, feelings, and also teach patients how to replace them with positive, life-enhancing ones.
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
Marriage & Family Therapist
- Taxonomy Code
- 106H00000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 158399
- License State
- CA
- Taxonomy Description
- A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
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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 1619821691, 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
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.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SANTA ROSA, CA 95401
SANTA ROSA, CA 95401
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1619821691, enumerated as an "individual" on February 25, 2026.
The provider is located at 341 IRWIN LN SANTA ROSA, CA 95401 and the phone number is (707) 360-1500.
Marriage & Family Therapist with taxonomy code 106H00000X.
