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MARY MAZGAJ
NPI 1861743742
Nurse Practitioner in New York, NY

Active since October 02, 2012PECOS Enrolled
1199 PARK AVE APT 1C, NEW YORK, NY 10128(212) 828-7473 Get Directions Write a Review

NPPES record last updated: August 7, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 7, 2024, Jul 12, 2024, May 24, 2021 and 3 more (6 updates tracked since 2015).

About Mary Mazgaj NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY MAZGAJ (NPI 1861743742) is an individual nurse practitioner in New York, New York, licensed in New York (404621) and active in the NPI registry since October 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861743742
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY MAZGAJ
Location Address1199 PARK AVE APT 1CNew York, NY 10128-1712
Mailing Address1199 Park Ave Apt 1cNew York, NY 10128-1712
Phone(212) 828-7473
Sole ProprietorNo
Enumeration DateOctober 2, 2012
Last NPPES UpdateAugust 7, 20246 updates tracked since enumeration
NPPES CertifiedAugust 7, 2024
✔ NPI 1861743742 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in NY · 404621
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
1199 PARK AVE APT 1C, New York, NY 10128
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Mazgaj is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Mazgaj reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Great Lakes Physician Practice PC
289 mi
Internal Medicine
15 S MAIN ST
Jamestown, NY 14701
  • Reassigned Medicare billing, New York enrollment
  • 233 clinicians in this Medicare group
NPI 1730599176 (716) 488-1877

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$102.04 typical visit price
range $65.69 – $198.19
Typical copayment $25.51 (range $16.42 – $49.54)
Most-billed visit code 99203
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARNEGIE HILL PSYCHIATRY, PC
Psychiatry & Neurology (Psychiatry)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473
MS. WHITTNEY YOUNG LMHC-D
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473
MS. DANIELLE FRANCESCA LOUIS LMHC, LPCC
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473
RACHEL LANDMAN
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (347) 822-6251
DR. LAURI ANN LISKIN MD
Psychiatry & Neurology (Psychiatry)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-6888
MS. ANNABELLE ANG MHC-LP
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473
WEI ZHANG
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473
GABRIELA ARIFIN
Counselor (Mental Health)
1199 PARK AVE APT 1C
NEW YORK, NY 10128
New York County (212) 828-7473

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Mazgaj's NPI number?

The NPI number for Mary Mazgaj is 1861743742. It was assigned to this individual provider in the NPPES registry on October 2, 2012.

Where is Mary Mazgaj located?

Mary Mazgaj practices at 1199 Park Ave Apt 1C, New York, NY 10128. The listed phone number is (212) 828-7473.

What is Mary Mazgaj's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Mary Mazgaj enrolled in Medicare?

Yes. Mary Mazgaj is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Mazgaj's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mazgaj reassigns Medicare benefits to Great Lakes Physician Practice PC (Jamestown, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Mazgaj's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Mazgaj was last updated on August 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.