John Macarthur
NPI 1417549403 · Addiction (Substance Use Disorder) Counselor · Lancaster, CA
John Macarthur is a Addiction (Substance Use Disorder) Counselor provider in Lancaster, CA (NPI 1417549403).
Provider details
- NPI number
- 1417549403
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2021-02-10
- Last updated
- 2021-02-10
- Certified
- 2021-02-10
Frequently asked questions
- What is John Macarthur's NPI number?
- John Macarthur's National Provider Identifier (NPI) is 1417549403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Macarthur's specialty?
- John Macarthur is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Macarthur located?
- John Macarthur's practice location on file with NPPES is 1331 W Avenue J Ste 206, Lancaster, CA 93534-2954.
- What is John Macarthur's phone number?
- The practice phone number listed in the NPPES registry for John Macarthur is (661) 802-7167.
- Is John Macarthur's NPI active?
- Yes — John Macarthur's NPI (1417549403) is active in the NPPES registry as of the last update on 2021-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.