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Nathaniel Sahyouni, PSYD
NPI 1609333962 · Clinical Psychologist · Chicago, IL
Nathaniel Sahyouni, PSYD is a Clinical Psychologist provider in Chicago, IL (NPI 1609333962).
Provider details
- NPI number
- 1609333962
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 071.009970 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(66/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
111 N Wabash Ave Ste 1400
Chicago, IL 60602-3074
Phone: (312) 436-1657
Street-level locationGet directions
Mailing address
111 N Wabash Ave Ste 1400
Chicago, IL 60602-3074
Registry dates
- Enumerated
- 2019-02-22
- Last updated
- 2019-02-22
Frequently asked questions
- What is Nathaniel Sahyouni's NPI number?
- Nathaniel Sahyouni's National Provider Identifier (NPI) is 1609333962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Sahyouni's specialty?
- Nathaniel Sahyouni is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Nathaniel Sahyouni located?
- Nathaniel Sahyouni's practice location on file with NPPES is 111 N Wabash Ave Ste 1400, Chicago, IL 60602-3074.
- What is Nathaniel Sahyouni's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Sahyouni is (312) 436-1657.
- Is Nathaniel Sahyouni's NPI active?
- Yes — Nathaniel Sahyouni's NPI (1609333962) is active in the NPPES registry as of the last update on 2019-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.