IndividualActive
William Christiana, PSY.D.
NPI 1356732895 · Psychologist · Chatham, NJ
William Christiana, PSY.D. is a Psychologist provider in Chatham, NJ (NPI 1356732895).
Provider details
- NPI number
- 1356732895
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 020992 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(74/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
10 Parrott Mill Rd Ste B
Chatham, NJ 07928-2744
Phone: (973) 635-2444
Street-level locationGet directions
Mailing address
102 Union St
Cedar Grove, NJ 07009-1928
Registry dates
- Enumerated
- 2015-02-05
- Last updated
- 2025-05-21
- Certified
- 2025-05-21
Frequently asked questions
- What is William Christiana's NPI number?
- William Christiana's National Provider Identifier (NPI) is 1356732895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Christiana's specialty?
- William Christiana is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Christiana located?
- William Christiana's practice location on file with NPPES is 10 Parrott Mill Rd Ste B, Chatham, NJ 07928-2744.
- What is William Christiana's phone number?
- The practice phone number listed in the NPPES registry for William Christiana is (973) 635-2444.
- Is William Christiana's NPI active?
- Yes — William Christiana's NPI (1356732895) is active in the NPPES registry as of the last update on 2025-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.