Gary Greenwald, MD - Medicare Emergency Medicine in New Hyde Park, NY

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Gary Greenwald, MD is a medicare enrolled "Emergency Medicine" physician in New Hyde Park, New York. His current practice location is 2800 Marcus Ave, New Hyde Park, New York. You can reach out to his office (for appointments etc.) via phone at (516) 622-6000.

Gary Greenwald is licensed to practice in New York (license number 154918-1) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1942287024.

Contact Information

Gary Greenwald, MD
2800 Marcus Ave,
New Hyde Park, NY 11042-1113
(516) 622-6000
Not Available

Map and Direction




Physician's Profile

Full NameGary Greenwald
GenderMale
SpecialityEmergency Medicine
Location2800 Marcus Ave, New Hyde Park, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1942287024
  • Provider Enumeration Date: 12/29/2005
  • Last Update Date: 02/19/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 2466627039
  • Enrollment ID: I20111209000001

Medical Identifiers

Medical identifiers for Gary Greenwald such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942287024NPI-NPPES
01008259MedicaidNY
773V41OtherNYBLUECROSS BLUESHIELD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 154918-1 (New York)Primary

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. Gary Greenwald allows following entities to bill medicare on his behalf.
Entity NameIsland Emergency Medical Services Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1639160385
PECOS PAC ID: 4981503513
Enrollment ID: O20040102000662
Entity NameSouth Nassau Physician Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922460542
PECOS PAC ID: 2264707884
Enrollment ID: O20171009001038

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. Gary Greenwald 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
Gary Greenwald, MD
Po Box 826223,
Philadelphia, PA 19182-6223

Ph: (866) 898-7142		Gary Greenwald, MD
2800 Marcus Ave,
New Hyde Park, NY 11042-1113

Ph: (516) 622-6000

Reviews and Comments


Emergency Medicine Doctors in New Hyde Park, NY

Robert Silverman,
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 270-05 76th Avenue, Lijmc-emergency Medicine, New Hyde Park, NY 11040
Phone: 718-470-7501    
Dr. Adam J Berman, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 27005 76th Ave, Lij Emergency Medicine, New Hyde Park, NY 11040
Phone: 718-470-7874    Fax: 718-470-9113
Barbara Barnett,
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: Lijmc-emergency Medicine, 270 05 76th Avenue, New Hyde Park, NY 11040
Phone: 718-470-7565    
Michael Locurto, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Lijmc-dept Of Emergency Medicine, 270-05 76th Avenue, New Hyde Park, NY 11040
Phone: 718-470-7501    
Dr. Leah Shaen Honigman Warner, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 27005 76th Ave, New Hyde Park, NY 11040
Phone: 718-470-7500    
Dario Gonzalez,
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Lijmc - Dept Of Emergency Medicine, 270-05 76th Avenue, New Hyde Park, NY 11040
Phone: 718-470-7501    
Aimee Tang, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 27005 76th Ave, New Hyde Park, NY 11040
Phone: 718-470-7501    

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.