What is Hallie O'Brien's NPI number?

Hallie O'Brien's National Provider Identifier (NPI) is 1386529758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Hallie O'Brien's specialty?

Hallie O'Brien is listed in the NPPES registry with a primary specialty of School Counselor (Behavioral Health & Social Service Providers).

Where is Hallie O'Brien located?

Hallie O'Brien's practice location on file with NPPES is 19445 Sitting Bull Rd, Apple Valley, CA 92308-5002.

What is Hallie O'Brien's phone number?

The practice phone number listed in the NPPES registry for Hallie O'Brien is (760) 961-8479.

Is Hallie O'Brien's NPI active?

Yes — Hallie O'Brien's NPI (1386529758) is active in the NPPES registry as of the last update on 2025-08-06.

IndividualActive

Hallie O'Brien, PPS

NPI 1386529758 · School Counselor · Apple Valley, CA

Hallie O'Brien, PPS is a School Counselor provider in Apple Valley, CA (NPI 1386529758).

Provider details

NPI number: 1386529758
Entity type: Individual
Primary specialty: School CounselorBehavioral Health & Social Service Providers
Credential: PPS
Sex: Female
Sole proprietor: No

Specialties & taxonomies

School CounselorPrimary101YS0200X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

19445 Sitting Bull Rd

Apple Valley, CA 92308-5002

Phone: (760) 961-8479

Street-level locationGet directions

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Mailing address