Dr Gregory Ajemian, MD - Medicare in W Hempstead, NY

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Dr Gregory Ajemian, MD is a medicare enrolled "Internal Medicine" physician in W Hempstead, New York. His current practice location is 225 Nassau Blvd # B, W Hempstead, New York. You can reach out to his office (for appointments etc.) via phone at (516) 775-9292.

Dr Gregory Ajemian is licensed to practice in New York (license number 171659) 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 1962407627.

Contact Information

Dr Gregory Ajemian, MD
225 Nassau Blvd # B,
W Hempstead, NY 11552-2247
(516) 775-9292
(516) 775-9294

Map and Direction




Physician's Profile

Full NameDr Gregory Ajemian
GenderMale
Speciality
Experience Years
Location225 Nassau Blvd # B, W Hempstead, 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 Gregory Ajemian attended and graduated from in
  NPI Data:
  • NPI Number: 1962407627
  • Provider Enumeration Date: 06/17/2005
  • Last Update Date: 09/24/2025
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for Dr Gregory Ajemian such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1962407627NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD040599L (Pennsylvania)Secondary
207R00000XInternal Medicine 171659 (New York)Primary

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 Gregory Ajemian 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 Gregory Ajemian, MD
1010 Northern Blvd Ste 328,
Great Neck, NY 11021-5329

Ph: (516) 233-2484		Dr Gregory Ajemian, MD
225 Nassau Blvd # B,
W Hempstead, NY 11552-2247

Ph: (516) 775-9292

Reviews and Comments


Internal Medicine Doctors in W Hempstead, NY

Dr. Annamaria Patelli, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 225 Nassau Blvd # B, W Hempstead, NY 11552
Phone: 516-775-9292    Fax: 516-775-9294
Richard Mermelstein, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 225 Nassau Blvd # B, W Hempstead, NY 11552
Phone: 516-656-1919    Fax: 833-968-3330
Dr. Olanrewaju Olusola Esan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 320 Wilson St, Ste 2, W Hempstead, NY 11552
Phone: 516-485-5864    Fax: 516-485-0151

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.