OrganizationActive
Seiden & Porjesz LLP
NPI 1225127434 · Clinical Psychologist · New York, NY
Seiden & Porjesz LLP is a Clinical Psychologist organization in New York, NY (NPI 1225127434).
Provider details
- NPI number
- 1225127434
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Yvonne Porjesz, Clinical Psychologist(212) 874-5437
- License
- 005106 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
525 West End Ave Suite #7e
Yvonne Porjesz PHD
New York, NY 10024-3207
Phone: (212) 874-5437
Fax: (212) 874-5437
Street-level locationGet directions
Mailing address
525 West End Ave Suite #7e
New York, NY 10024-3207
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2020-08-22
Frequently asked questions
- What is Seiden & Porjesz LLP's NPI number?
- Seiden & Porjesz LLP's National Provider Identifier (NPI) is 1225127434, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Seiden & Porjesz LLP?
- Seiden & Porjesz LLP is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Seiden & Porjesz LLP located?
- Seiden & Porjesz LLP's practice location on file with NPPES is 525 West End Ave Suite #7e, New York, NY 10024-3207.
- What is Seiden & Porjesz LLP's phone number?
- The practice phone number listed in the NPPES registry for Seiden & Porjesz LLP is (212) 874-5437.
- Who is the authorized official for Seiden & Porjesz LLP?
- The authorized official listed on Seiden & Porjesz LLP's NPPES record is Yvonne Porjesz, Clinical Psychologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Seiden & Porjesz LLP's NPI active?
- Yes — Seiden & Porjesz LLP's NPI (1225127434) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.