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WILLIAM MICHAEL GERBA M.D.
NPI 1568548949
Pediatrics - Pediatric Hematology-Oncology in Great Neck, NY

Active since October 28, 2006PECOS Enrolled
935 NORTHERN BLVD, STE 300, GREAT NECK, NY 11021(516) 466-9062(516) 466-9081 Get Directions Write a Review

NPPES record last updated: December 20, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About William Michael Gerba M.d. NPPES

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

WILLIAM MICHAEL GERBA M.D. (NPI 1568548949) is an individual pediatric hematology-oncology provider in Great Neck, New York, licensed in New York (124840) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1568548949
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameWILLIAM MICHAEL GERBACredential: M.D.
Location Address935 NORTHERN BLVD, STE 300Great Neck, NY 11021-5309
Mailing Address935 Northern Blvd, Ste 300Great Neck, NY 11021-5309 · (516) 466-9062 · Fax (516) 466-9081
Phone(516) 466-9062
Fax(516) 466-9081
Sole ProprietorNo
Enumeration DateOctober 28, 2006
Last NPPES UpdateDecember 20, 2021
NPPES CertifiedDecember 20, 2021
✔ NPI 1568548949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in NY · 124840
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Also ListedPediatricsTaxonomy 208000000X · License 124840 (NY)
935 NORTHERN BLVD, Great Neck, NY 11021
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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)

William Michael Gerba M.d. 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 William Gerba reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New York University
1,047 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

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

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.

IDIDA KAPLAN M.D.
Ophthalmology
935 NORTHERN BLVD, SUITE 204
GREAT NECK, NY 11021
Nassau County (516) 466-1168
BIO BEHAVIORAL PSYCHOLOGY P.C.
Psychologist (Clinical)
935 NORTHERN BLVD, SUITE 102
GREAT NECK, NY 11021
Nassau County (516) 487-7116
ALLIAD PEDIATRICS
Physician Assistant (Medical)
935 NORTHERN BLVD
GREAT NECK, NY 11021
Nassau County (516) 466-5437
GREAT NECK RADIOLOGISTS, PC
Radiology (Diagnostic Radiology)
935 NORTHERN BLVD, SUITE 200
GREAT NECK, NY 11021
Nassau County (516) 829-4414
HILMA M YU M.D.
Obstetrics & Gynecology
935 NORTHERN BLVD, SUITE 105
GREAT NECK, NY 11021
Nassau County (516) 773-8080
MARY ELLEN CASSIDY PA
Physician Assistant
935 NORTHERN BLVD, SUITE 300
GREAT NECK, NY 11021
Nassau County (516) 466-9062
DR. SONY KHEMLANI-PATEL PH.D.
Psychologist (Clinical)
935 NORTHERN BLVD, SUITE 102
GREAT NECK, NY 11021
Nassau County (516) 487-7116
NASSAU PLASTIC SURGICAL SUITES PC
Clinic/Center (Ambulatory Surgical)
935 NORTHERN BLVD, SUITE 302
GREAT NECK, NY 11021
Nassau County (516) 829-7505

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 William Gerba's NPI number?

The NPI number for William Gerba is 1568548949. It was assigned to this individual provider in the NPPES registry on October 28, 2006.

Where is William Gerba located?

William Gerba practices at 935 Northern Blvd Ste 300, Great Neck, NY 11021. The listed phone number is (516) 466-9062.

What is William Gerba's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is William Gerba enrolled in Medicare?

Yes. William Gerba is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Gerba's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Gerba reassigns Medicare benefits to New York University (Boynton Beach, FL). 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 William Gerba'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 William Gerba was last updated on December 20, 2021. 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.