William Piacitelli, APCC
NPI 1477438539 · Professional Counselor · Santa Ana, CA
William Piacitelli, APCC is a Professional Counselor provider in Santa Ana, CA (NPI 1477438539).
Provider details
- NPI number
- 1477438539
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- APCC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 19611 (CA)
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
Under 1 yr in 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
- 2025-08-07
- Last updated
- 2025-09-29
- Certified
- 2025-09-29
Frequently asked questions
- What is William Piacitelli's NPI number?
- William Piacitelli's National Provider Identifier (NPI) is 1477438539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Piacitelli's specialty?
- William Piacitelli is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is William Piacitelli located?
- William Piacitelli's practice location on file with NPPES is 405 W 5th St, Santa Ana, CA 92701-4599.
- What is William Piacitelli's phone number?
- The practice phone number listed in the NPPES registry for William Piacitelli is (714) 834-8991.
- Is William Piacitelli's NPI active?
- Yes — William Piacitelli's NPI (1477438539) is active in the NPPES registry as of the last update on 2025-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.