Mr John Grassi, PA - Medicare Physician Assistant in Manhasset, NY

Mr John Grassi, PA is a medicare enrolled "Emergency Medicine" physician in Manhasset, New York. He graduated from medical school in 1998 and has 26 years of diverse experience with area of expertise as Physician Assistant. He is a member of the group practice Optum Medical Care Pc, Optum Urgent Care Pllc and his current practice location is 300 Community Dr, Manhasset, New York. You can reach out to his office (for appointments etc.) via phone at (516) 562-3090.

Mr John Grassi is licensed to practice in New York (license number 006579) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1457471450.

Contact Information

Mr John Grassi, PA
300 Community Dr,
Manhasset, NY 11030-3816
(516) 562-3090
(516) 562-3680

Map and Direction




Physician's Profile

Full NameMr John Grassi
GenderMale
SpecialityPhysician Assistant
Experience26 Years
Location300 Community Dr, Manhasset, New York
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mr John Grassi graduated from medical school in 1998
  NPI Data:
  • NPI Number: 1457471450
  • Provider Enumeration Date: 03/31/2007
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 9234363656
  • Enrollment ID: I20131017001274

Medical Identifiers

Medical identifiers for Mr John Grassi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1457471450NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 006579 (New York)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Optum Medical Care Pc9931013240997
Optum Urgent Care Pllc862829951888

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. Mr John Grassi 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
Mr John Grassi, PA
972 Brush Hollow Rd,
Westbury, NY 11590-1740

Ph: (516) 876-5555
Mr John Grassi, PA
300 Community Dr,
Manhasset, NY 11030-3816

Ph: (516) 562-3090

Reviews and Comments


Emergency Medicine Doctors in Manhasset, NY

Annabella Salvador,
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 300 Community Drive, Nsuh-dept Of Emergency Medicine, Manhasset, NY 11030
Phone: 516-562-4125    
Jeffrey Greco,
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Community Dr, Manhasset, NY 11030
Phone: 516-562-0100    
Ingrid Llovera, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Nsuh Dept Of Emergency Medicine, 300 Community Drive, Manhasset, NY 11030
Phone: 516-562-3090    
Dr. Rachel Shively, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Community Dr, Manhasset, NY 11030
Phone: 847-567-4404    
Dr. Justin Chen, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Community Dr, Manhasset, NY 11030
Phone: 516-562-2925    
Dr. Juan Camilo Mendez, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Community Dr, North Shore-lij Office Of Graduate Medical Education, Manhasset, NY 11030
Phone: 646-883-2290    Fax: 844-867-7210
Ajay Kumar Puri, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Community Drive, Concourse Level, Manhasset, NY 11030
Phone: 516-470-7873    

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.