John Matsen, LMHC
NPI 1194429530 · Mental Health Counselor · Brooklyn, NY
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Matsen, LMHC is a Mental Health Counselor provider in Brooklyn, NY (NPI 1194429530).
Provider details
- NPI number
- 1194429530
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 009512 (NY)
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
3 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
- 2023-03-29
- Last updated
- 2023-03-29
- Certified
- 2023-03-29
Frequently asked questions
- What is John Matsen's NPI number?
- John Matsen's National Provider Identifier (NPI) is 1194429530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Matsen's specialty?
- John Matsen is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is John Matsen located?
- John Matsen's practice location on file with NPPES is 2233 Nostrand Ave Ste 3, Brooklyn, NY 11210-3029.
- What is John Matsen's phone number?
- The practice phone number listed in the NPPES registry for John Matsen is (646) 819-3390.
- Does John Matsen accept Medicare?
- John Matsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Matsen's NPI active?
- Yes — John Matsen's NPI (1194429530) is active in the NPPES registry as of the last update on 2023-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.