DR. LAURA ORTIZ GUILLEN PH.D.
NPI 1871790030
Psychologist - Counseling in Berkeley, CA

NPI Status: Active since June 29, 2007

Contact Information

2222 BANCROFT EXT
BERKELEY, CA
ZIP 94720
Phone: (510) 643-2896

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  • Individual
  • Female
  • Psychologist
  • Counseling

About LAURA GUILLEN

This page provides the complete NPI Profile along with additional information for Laura Guillen, a provider established in Berkeley, California with a medical specialization in Psychologist, focusing in counseling . The healthcare provider is registered in the NPI registry with number 1871790030 assigned on June 2007. The practitioner's primary taxonomy code is 103TC1900X with license number 21282 (CA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1871790030
Provider Name
DR. LAURA ORTIZ GUILLEN PH.D.
Gender
Female
Entity Type
Individual
Location Address
2222 BANCROFT EXT BERKELEY, CA 94720
Location Phone
(510) 643-2896
Mailing Address
510 CANYON OAKS DR APT. A OAKLAND, CA 94605
Mailing Phone
(510) 568-3905
Is Sole Proprietor?
No
Enumeration Date
06-29-2007
Last Update Date
07-08-2007
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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

Psychologist Counseling

Taxonomy Code
103TC1900X
Type
Behavioral Health & Social Service Providers
License No.
21282
License State
CA
Taxonomy Description
A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.

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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 1871790030, 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
8
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
1
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
0
Unchanged
Pos 9
3
Doubled → 6
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 7 → 14 → 5 7 → 14 → 5 0 → 0 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 4 + 1 + 1 + 4 + 9 + 0 + 0 + 6 + 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 1871790030.

Other Providers at the Same Location


The following 16 providers are registered at the same or a nearby location.

Family Medicine (Sports Medicine)
2222 BANCROFT EXT, UNIVERSITY HEALTH SERVICE- CLINICAL SERVICES
BERKELEY, CA 94720
Internal Medicine
2222 BANCROFT EXT, UNIVERSITY HEALTH SERVICES, UC BERKELEY
BERKELEY, CA 94720
Nurse Practitioner (Adult Health)
2222 BANCROFT EXT
BERKELEY, CA 94720
Nurse Practitioner (Family)
2222 BANCROFT EXT
BERKELEY, CA 94720
Nurse Practitioner (Primary Care)
2222 BANCROFT EXT
BERKELEY, CA 94720
Family Medicine (Sports Medicine)
2222 BANCROFT EXT
BERKELEY, CA 94720
Nurse Practitioner (Occupational Health)
2222 BANCROFT EXT
BERKELEY, CA 94720
Preventive Medicine (Preventive Medicine/Occupational Environmental Medicine)
2222 BANCROFT EXT
BERKELEY, CA 94720
Obstetrics & Gynecology
2222 BANCROFT EXT
BERKELEY, CA 94720
Internal Medicine
2222 BANCROFT EXT
BERKELEY, CA 94720
Social Worker (Clinical)
2222 BANCROFT EXT
BERKELEY, CA 94720
Optometrist
2222 BANCROFT EXT
BERKELEY, CA 94720
Optometrist
2222 BANCROFT EXT
BERKELEY, CA 94720
Nurse Practitioner (Family)
2222 BANCROFT EXT
BERKELEY, CA 94720
Optometrist
2222 BANCROFT EXT
BERKELEY, CA 94720
Specialist/Technologist (Athletic Trainer)
2222 BANCROFT EXT
BERKELEY, CA 94720

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1871790030, enumerated as an "individual" on June 29, 2007.

The provider is located at 2222 BANCROFT EXT BERKELEY, CA 94720 and the phone number is (510) 643-2896.

Psychologist with taxonomy code 103TC1900X and a focus in Counseling.