What is Nadia Tiongson's NPI number?

Nadia Tiongson's National Provider Identifier (NPI) is 1598653321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Nadia Tiongson's specialty?

Nadia Tiongson is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).

Where is Nadia Tiongson located?

Nadia Tiongson's practice location on file with NPPES is 315 Centennial Way, Tustin, CA 92780-3714.

What is Nadia Tiongson's phone number?

The practice phone number listed in the NPPES registry for Nadia Tiongson is (949) 250-1101.

Is Nadia Tiongson's NPI active?

Yes — Nadia Tiongson's NPI (1598653321) is active in the NPPES registry as of the last update on 2025-06-27.

IndividualActive

Nadia Tiongson

NPI 1598653321 · Behavior Analyst · Tustin, CA

Nadia Tiongson is a Behavior Analyst provider in Tustin, CA (NPI 1598653321).

Provider details

NPI number: 1598653321
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior AnalystPrimary103K00000X
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
1 yr in NPPES 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

315 Centennial Way

Tustin, CA 92780-3714

Phone: (949) 250-1101

Fax: (949) 250-1103

Street-level locationGet directions

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Mailing address