William Michael Gerba, M.D.
Pediatric Hematology & Oncology Physician · Great Neck, NY
William Michael Gerba, M.D. is a pediatric hematology & oncology physician with a practice address in Great Neck, New York, and NPI 1568548949, issued on Oct 28, 2006. Check the license (New York 124840, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William Michael Gerba
- Credential
- M.D.
- Primary taxonomy
- Pediatric Hematology & Oncology Physician 2080P0207X
- License number
- 124840 NY
Self-reported in NPPES; status is on the state search - Practice location
- 935 Northern Blvd, Great Neck, NY 11021
- Phone
- (516) 466-9062
- Enumerated
- Oct 28, 2006
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (516) 466-9081
- Entity
- Type 1 · individual
Also registered at 935 Northern Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Ellen Cassidy, PAPhysician Assistant1114101615
- Katharine Donnelly, PH.D.Clinical Psychologist1710313770
- Michael Eisenberg, MD, MPHAddiction Medicine (Psychiatry & Neurology) Physician1881703452
- Gholamali Farahani, MDObstetrics & Gynecology Physician1386709665
- Pierangela Frisina, NPPediatric Nurse Practitioner1891417978
- Genevieve Gans, LMSWSocial Worker1316311756
Verify William Michael Gerba in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 124840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average pediatric hematology & oncology physician in 2024
15 Medicare Part D claims, against an average of 94 among the 300 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $336.66
16 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 1,215 providers of this specialty with any payment received $7,404.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Pediatric Hematology & Oncology Physician providers in New York
There are 289 pediatric hematology & oncology physician records in New York.
Other pediatric hematology & oncology physician records in New York
- Cori Abikoff, MDValhalla, NY1235330283
- Suchitra Acharya, MDNew York, NY1871683052
- Olubunmi Afonja, MB, BSNew York, NY1194719492
- Manpreet Ahluwalia, M.D.Bronx, NY1477751147
- Opeyemi Ajibade, M.D.Bronx, NY1386176915
- Alexander Aledo, M.D.Flushing, NY1548235625
- Jeffrey Allen, MDNew York, NY1154397727
- Abdullrahman Alsultan, MBBSNew York, NY1144305376
- Srikanth Ambati, M.DNew York, NY1295977981
- Steven Ambrusko, MDBuffalo, NY1205047461
Common questions
What is William Michael Gerba, M.D.'s NPI number?
William Michael Gerba, M.D.'s National Provider Identifier (NPI) is 1568548949, issued on Oct 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Michael Gerba, M.D. located?
The NPPES record lists a practice address at 935 Northern Blvd, Great Neck, NY, 11021. Phone: (516) 466-9062. Providers update this record themselves, so call before visiting.
How can I verify William Michael Gerba, M.D.'s license?
NPPES lists New York license number 124840, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Michael Gerba, M.D. prescribe under Medicare Part D?
In 2024, William Michael Gerba, M.D. had 15 Medicare Part D claims; the average among pediatric hematology & oncology physician prescribers was 94. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.