Noreen Riordan, PH.D., LLC
NPI 1578911798 · Psychologist · Portland, OR
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Noreen Riordan, PH.D., LLC is a Psychologist organization in Portland, OR (NPI 1578911798).
Provider details
- NPI number
- 1578911798
- Entity type
- Organization
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Noreen Riordan, Psychologist(503) 274-0040
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% 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
Mailing address
Registry dates
- Enumerated
- 2016-05-27
- Last updated
- 2016-05-27
Frequently asked questions
- What is Noreen Riordan, PH.D., LLC's NPI number?
- Noreen Riordan, PH.D., LLC's National Provider Identifier (NPI) is 1578911798, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Noreen Riordan, PH.D., LLC?
- Noreen Riordan, PH.D., LLC is classified in the NPPES registry as Psychologist (Behavioral Health & Social Service Providers).
- Where is Noreen Riordan, PH.D., LLC located?
- Noreen Riordan, PH.D., LLC's practice location on file with NPPES is 1020 Sw Taylor St, Portland, OR 97205-2543.
- What is Noreen Riordan, PH.D., LLC's phone number?
- The practice phone number listed in the NPPES registry for Noreen Riordan, PH.D., LLC is (503) 274-0040.
- Does Noreen Riordan, PH.D., LLC accept Medicare?
- Noreen Riordan, PH.D., LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Noreen Riordan, PH.D., LLC?
- The authorized official listed on Noreen Riordan, PH.D., LLC's NPPES record is Noreen Riordan, Psychologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Noreen Riordan, PH.D., LLC's NPI active?
- Yes — Noreen Riordan, PH.D., LLC's NPI (1578911798) is active in the NPPES registry as of the last update on 2016-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.