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CASEY HASHER
NPI 1639891641
Nurse Practitioner - Adult Health in Roslyn, NY

Active since September 15, 2022PECOS Enrolled
100 PORT WASHINGTON BLVD, ROSLYN, NY 11576(516) 562-6000 Get Directions Write a Review

NPPES record last updated: September 15, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Casey Hasher NPPES

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

CASEY HASHER (NPI 1639891641) is an individual adult health provider in Roslyn, New York, licensed in New York (F310773) and active in the NPI registry since September 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639891641
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameCASEY HASHER
Location Address100 PORT WASHINGTON BLVDRoslyn, NY 11576-1353
Mailing Address100 Port Washington BlvdRoslyn, NY 11576-1353 · (516) 562-6000
Phone(516) 562-6000
Sole ProprietorYes
Enumeration DateSeptember 15, 2022
NPPES CertifiedMay 16, 2022
✔ NPI 1639891641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in NY · F310773
100 PORT WASHINGTON BLVD, Roslyn, NY 11576
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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)

Casey Hasher 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 Reassignments

2

Medicare enrollment records show Casey Hasher reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Samaritan Medical Services, P.C.
21 mi
Internal Medicine
1000 MONTAUK HWY
West Islip, NY 11795
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Samaritan Medical Services PC
  • 209 clinicians in this Medicare group
NPI 1124184544 (631) 376-4003
North Shore Hematology Oncology Associates PC
33 mi
Specialist
49 NESCONSET HWY
Port Jefferson Station, NY 11776
  • Reassigned Medicare billing, New York enrollment
  • 636 clinicians in this Medicare group
NPI 1396794574 (631) 751-3000

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 11576 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

ERIN MARIE MARKEY R.N.,M.S.,APRN-BC
Nurse Practitioner (Acute Care)
100 PORT WASHINGTON BLVD
ROSLYN, NY 11576
Nassau County (516) 562-6351
DR. MENA YACOUB D.O
Internal Medicine (Clinical Cardiac Electrophysiology)
100 PORT WASHINGTON BLVD
ROSLYN, NY 11576
Nassau County (718) 689-0316
JULIA COHEN
Physician Assistant
100 PORT WASHINGTON BLVD
ROSLYN, NY 11576
Nassau County (516) 562-6000
PEDIATRIC CARDIOLOGY OF LI PC
Pediatrics (Pediatric Cardiology)
100 PORT WASHINGTON BLVD, SUITE 108
ROSLYN, NY 11576
Nassau County (516) 365-3340
PATRICK BRENNAN P.A.
Physician Assistant
100 PORT WASHINGTON BLVD
ROSLYN, NY 11576
Nassau County (516) 338-5358
KENNETH ZIELINSKI P.A.
Physician Assistant
100 PORT WASHINGTON BLVD
ROSLYN, NY 11576
Nassau County (516) 338-5358
DR. STEFAN MILTON MUEHLBAUER M.D., PHD
Emergency Medicine
100 PORT WASHINGTON BLVD, DEPT OF EMERGENCY MEDICINE
ROSLYN, NY 11576
Nassau County (165) 626-6055
MRS. MELISSA A MORELLI FNP-C
Nurse Practitioner (Family)
100 PORT WASHINGTON BLVD, ST. FRANCIS HOSPITAL EMERGENCY ROOM
ROSLYN, NY 11576
Nassau County (516) 562-6600

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 Casey Hasher's NPI number?

The NPI number for Casey Hasher is 1639891641. It was assigned to this individual provider in the NPPES registry on September 15, 2022.

Where is Casey Hasher located?

Casey Hasher practices at 100 Port Washington Blvd, Roslyn, NY 11576. The listed phone number is (516) 562-6000.

What is Casey Hasher's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Casey Hasher enrolled in Medicare?

Yes. Casey Hasher is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Casey Hasher's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Casey Hasher reassigns Medicare benefits to 2 organizations: Samaritan Medical Services, P.C. (West Islip, NY) and North Shore Hematology Oncology Associates PC (Port Jefferson Station, NY). Each 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 Casey Hasher'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 Casey Hasher was last updated on September 15, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.