OLIVIA HALLORAN RYT 200
NPI 1699565226
Counselor - Mental Health in Newport Beach, CA

NPI Status: Active since May 07, 2025

Contact Information

307 PLACENTIA AVE
NEWPORT BEACH, CA
ZIP 92663
Phone: (949) 393-2240

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  • Individual
  • Female
  • Counselor
  • Mental Health

About OLIVIA HALLORAN

This page provides the complete NPI Profile along with additional information for Olivia Halloran, a provider established in Newport Beach, California with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1699565226 assigned on May 2025. The practitioner's primary taxonomy code is 101YM0800X with license number 451177 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1699565226
Provider Name
OLIVIA HALLORAN RYT 200
Gender
Female
Entity Type
Individual
Location Address
307 PLACENTIA AVE NEWPORT BEACH, CA 92663
Location Phone
(949) 393-2240
Mailing Address
825 CENTER ST APT J252 COSTA MESA, CA 92627
Mailing Phone
(949) 600-3808
Is Sole Proprietor?
Yes
Enumeration Date
05-07-2025
Last Update Date
05-07-2025
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A mental health counselor like Olivia Halloran provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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 Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
451177
License State
CA

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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 1699565226, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
5
Doubled → 10 → 1 + 0
Pos 6
6
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
2
Unchanged
Pos 9
2
Doubled → 4
Check
6
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 5 → 10 → 1 5 → 10 → 1 2 → 4

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 + 1 + 0 + 6 + 1 + 0 + 2 + 4 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1699565226.

Other Providers at the Same Location


The following 17 providers are registered at the same or a nearby location.

Plastic Surgery
307 PLACENTIA AVE, STE 208
NEWPORT BEACH, CA 92663
Specialist
307 PLACENTIA AVE, SUITE # 111
NEWPORT BEACH, CA 92663
Dentist
307 PLACENTIA AVE, 201
NEWPORT BEACH, CA 92663
Dermatology
307 PLACENTIA AVE, #205
NEWPORT BEACH, CA 92663
Internal Medicine (Cardiovascular Disease)
307 PLACENTIA AVE, SUITE #203
NEWPORT BEACH, CA 92663
Internal Medicine
307 PLACENTIA AVE, 100
NEWPORT BEACH, CA 92663
Internal Medicine (Interventional Cardiology)
307 PLACENTIA AVE, SUITE 202
NEWPORT BEACH, CA 92663
Physician Assistant
307 PLACENTIA AVE, STE. #205
NEWPORT BEACH, CA 92663
Clinic/Center (Adolescent and Children Mental Health)
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Counselor
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Community/Behavioral Health
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Counselor (Professional)
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Health and Wellness Coach
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Nutritionist (Nutrition, Education)
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Health and Wellness Coach
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Health and Wellness Coach
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663
Health and Wellness Coach
307 PLACENTIA AVE
NEWPORT BEACH, CA 92663

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1699565226, enumerated as an "individual" on May 07, 2025.

The provider is located at 307 PLACENTIA AVE NEWPORT BEACH, CA 92663 and the phone number is (949) 393-2240.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.