John Mroz
NPI 1578004750 · Psychiatric/Mental Health Nurse Practitioner · Patchogue, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mroz is a Psychiatric/Mental Health Nurse Practitioner provider in Patchogue, NY (NPI 1578004750).
Provider details
- NPI number
- 1578004750
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 402110 (NY)
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 tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
495 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 484 | $88 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 11 | $182 |
Typical Medicare-allowed amounts for these services range $88–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 114 | 22 |
| Trazodone Hcl | 114 | 16 |
| Lamotrigine | 107 | 19 |
| Fluoxetine Hcl | 107 | 16 |
| Quetiapine Fumarate | 106 | 11 |
| Bupropion Hclbrand: Bupropion Xl | 101 | 21 |
| Hydroxyzine Hcl | 90 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$619 across 30 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-20
- Last updated
- 2017-03-20
Frequently asked questions
- What is John Mroz's NPI number?
- John Mroz's National Provider Identifier (NPI) is 1578004750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mroz's specialty?
- John Mroz is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Mroz located?
- John Mroz's practice location on file with NPPES is 450 Waverly Ave, Patchogue, NY 11772-1555.
- What is John Mroz's phone number?
- The practice phone number listed in the NPPES registry for John Mroz is (631) 730-7503.
- Does John Mroz accept Medicare?
- John Mroz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mroz's NPI active?
- Yes — John Mroz's NPI (1578004750) is active in the NPPES registry as of the last update on 2017-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.