Dr William Shestak, DO - Medicare Emergency Medicine in Mineola, NY

Dr William Shestak, DO is a medicare enrolled "Emergency Medicine" physician in Mineola, New York. He went to New York College Of Osteo Medicine Of New York Institute Of Technology and graduated in 1996 and has 28 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Greenwich Hospital and his current practice location is 259 1st St, Mineola, New York. You can reach out to his office (for appointments etc.) via phone at (516) 663-2727.

Dr William Shestak is licensed to practice in New York (license number 212656-1) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1285680348.

Contact Information

Dr William Shestak, DO
259 1st St,
Mineola, NY 11501-3957
(516) 663-2727
(516) 663-8549

Map and Direction




Physician's Profile

Full NameDr William Shestak
GenderMale
SpecialityEmergency Medicine
Experience28 Years
Location259 1st St, Mineola, New York
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr William Shestak attended and graduated from New York College Of Osteo Medicine Of New York Institute Of Technology in 1996
  NPI Data:
  • NPI Number: 1285680348
  • Provider Enumeration Date: 05/26/2006
  • Last Update Date: 11/18/2009
  Medicare PECOS Information:
  • PECOS PAC ID: 0143363523
  • Enrollment ID: I20140423000942

Medical Identifiers

Medical identifiers for Dr William Shestak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285680348NPI-NPPES
01922238MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 212656-1 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Greenwich Hospital Association -Greenwich, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Greenwich Hospital367847671066

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr William Shestak allows following entities to bill medicare on his behalf.
Entity NameGreenwich Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1609846088
PECOS PAC ID: 3678476710
Enrollment ID: O20040128000288

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr William Shestak is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr William Shestak, DO
700 Hicksville Rd, Suite 204,
Bethpage, NY 11714-3471

Ph: (516) 576-5812
Dr William Shestak, DO
259 1st St,
Mineola, NY 11501-3957

Ph: (516) 663-2727

Reviews and Comments


Emergency Medicine Doctors in Mineola, NY

Dr. Heather A Posillico, DO
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 259 First Street, Emergency Department, Mineola, NY 11501
Phone: 516-663-2211    
Dr. Martin S. Kohn, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 259 1st St, Mineola, NY 11501
Phone: 516-663-2727    Fax: 516-663-8549
Dr. Edward Mintz, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 259 1st St, Mineola, NY 11501
Phone: 516-663-2727    Fax: 516-663-8549
Scott A. Gorenstein, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 120 Mineola Blvd, Suite 360, Mineola, NY 11501
Phone: 516-663-8498    Fax: 516-663-9765
Dr. Kenneth Steinberg, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 292 Herricks Rd, Mineola, NY 11501
Phone: 516-294-8910    Fax: 516-294-4009
Mrs. Jane Avella, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 292 Herricks Rd, Mineola, NY 11501
Phone: 516-294-8910    Fax: 516-294-4009
Jessica Leigh Harmon, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 259 1st St, Mineola, NY 11501
Phone: 516-663-2211    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.