Richard Mermelstein, MD - Medicare Internal Medicine in W Hempstead, NY

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Richard Mermelstein, 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) 656-1919.

Richard Mermelstein is licensed to practice in New York (license number 290500) 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 1629488440.

Contact Information

Richard Mermelstein, MD
225 Nassau Blvd # B,
W Hempstead, NY 11552-2247
(516) 656-1919
(833) 968-3330

Map and Direction




Physician's Profile

Full NameRichard Mermelstein
GenderMale
SpecialityInternal Medicine
Location225 Nassau Blvd # B, W Hempstead, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1629488440
  • Provider Enumeration Date: 05/01/2014
  • Last Update Date: 07/17/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5092019372
  • Enrollment ID: I20180403000375

Medical Identifiers

Medical identifiers for Richard Mermelstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629488440NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 290500 (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. Richard Mermelstein allows following entities to bill medicare on his behalf.
Entity NamePrine Health Medical Group, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1144790163
PECOS PAC ID: 1557600384
Enrollment ID: O20190222000152

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. Richard Mermelstein 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
Richard Mermelstein, MD
15 Smith Place,
Williston Park, NY 11596

Ph: (718) 806-1434		Richard Mermelstein, MD
225 Nassau Blvd # B,
W Hempstead, NY 11552-2247

Ph: (516) 656-1919

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
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
Dr. Gregory Ajemian, 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

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.