Joyce Mierzejwski, LPC
NPI 1417013962 · Mental Health Counselor · Montclair, NJ
Joyce Mierzejwski, LPC is a Mental Health Counselor provider in Montclair, NJ (NPI 1417013962).
Provider details
- NPI number
- 1417013962
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LPC
- Sex
- Female
- Sole proprietor
- Yes
- License
- PC0515 (NJ)
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
19 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
Mailing address
Registry dates
- Enumerated
- 2006-12-29
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is Joyce Mierzejwski's NPI number?
- Joyce Mierzejwski's National Provider Identifier (NPI) is 1417013962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Mierzejwski's specialty?
- Joyce Mierzejwski is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Joyce Mierzejwski located?
- Joyce Mierzejwski's practice location on file with NPPES is 8 Hillside Ave Ste 107, Montclair, NJ 07042-2129.
- What is Joyce Mierzejwski's phone number?
- The practice phone number listed in the NPPES registry for Joyce Mierzejwski is (973) 857-5333.
- Is Joyce Mierzejwski's NPI active?
- Yes — Joyce Mierzejwski's NPI (1417013962) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.