John Mroz Psychiatric Nurse Practitioner PLLC
NPI 1578334660 · Psychiatric/Mental Health Nurse Practitioner · East Islip, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mroz Psychiatric Nurse Practitioner PLLC is a Psychiatric/Mental Health Nurse Practitioner organization in East Islip, NY (NPI 1578334660).
Provider details
- NPI number
- 1578334660
- Entity type
- Organization
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- John Mroz, Pmhnp(631) 666-1615
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
- 2024-01-09
- Last updated
- 2024-01-09
- Certified
- 2024-01-09
Frequently asked questions
- What is John Mroz Psychiatric Nurse Practitioner PLLC's NPI number?
- John Mroz Psychiatric Nurse Practitioner PLLC's National Provider Identifier (NPI) is 1578334660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Mroz Psychiatric Nurse Practitioner PLLC?
- John Mroz Psychiatric Nurse Practitioner PLLC is classified in the NPPES registry as Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Mroz Psychiatric Nurse Practitioner PLLC located?
- John Mroz Psychiatric Nurse Practitioner PLLC's practice location on file with NPPES is 107 W Main St, East Islip, NY 11730-2337.
- What is John Mroz Psychiatric Nurse Practitioner PLLC's phone number?
- The practice phone number listed in the NPPES registry for John Mroz Psychiatric Nurse Practitioner PLLC is (631) 666-1615.
- Does John Mroz Psychiatric Nurse Practitioner PLLC accept Medicare?
- John Mroz Psychiatric Nurse Practitioner PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for John Mroz Psychiatric Nurse Practitioner PLLC?
- The authorized official listed on John Mroz Psychiatric Nurse Practitioner PLLC's NPPES record is John Mroz, Pmhnp. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Mroz Psychiatric Nurse Practitioner PLLC's NPI active?
- Yes — John Mroz Psychiatric Nurse Practitioner PLLC's NPI (1578334660) is active in the NPPES registry as of the last update on 2024-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.