Melissa Longjohn
NPI 1427570779 · Addiction (Substance Use Disorder) Counselor · Lancaster, CA
Melissa Longjohn is a Addiction (Substance Use Disorder) Counselor provider in Lancaster, CA (NPI 1427570779).
Provider details
- NPI number
- 1427570779
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- R1252200517 (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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 7101 Baird AveReseda, CA 91335-4150Phone: (818) 342-5897Fax: (818) 996-1051
Registry dates
- Enumerated
- 2017-07-07
- Last updated
- 2022-07-21
- Certified
- 2020-05-05
Frequently asked questions
- What is Melissa Longjohn's NPI number?
- Melissa Longjohn's National Provider Identifier (NPI) is 1427570779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Longjohn's specialty?
- Melissa Longjohn is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Melissa Longjohn located?
- Melissa Longjohn's practice location on file with NPPES is 44447 10th St W, Lancaster, CA 93534-3324.
- What is Melissa Longjohn's phone number?
- The practice phone number listed in the NPPES registry for Melissa Longjohn is (661) 726-2630.
- Is Melissa Longjohn's NPI active?
- Yes — Melissa Longjohn's NPI (1427570779) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.