Dawn E Williamson, MD - Medicare Internal Medicine in Long Beach, NY

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Dawn E Williamson, MD is a medicare enrolled "Internal Medicine" physician in Long Beach, New York. Her current practice location is 455 E Bay Dr, Long Beach, New York. You can reach out to her office (for appointments etc.) via phone at (516) 897-1100.

Dawn E Williamson is licensed to practice in New York (license number 190633) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1073592549.

Contact Information

Dawn E Williamson, MD
455 E Bay Dr,
Long Beach, NY 11561-2301
(516) 897-1100
(516) 897-1106

Map and Direction




Physician's Profile

Full NameDawn E Williamson
GenderFemale
SpecialityInternal Medicine
Location455 E Bay Dr, Long Beach, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1073592549
  • Provider Enumeration Date: 01/12/2006
  • Last Update Date: 09/11/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 6002807765
  • Enrollment ID: I20040520001295

Medical Identifiers

Medical identifiers for Dawn E Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1073592549NPI-NPPES
063AL1OtherNYBLUECROSS BLUESHIELD
01604993MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 190633 (New York)Secondary
207R00000XInternal Medicine 190633 (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. Dawn E Williamson allows following entities to bill medicare on her 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 NameNes Medical Services Of New York Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215455191
PECOS PAC ID: 0840181392
Enrollment ID: O20040323001392
Entity NameNassau Health Care Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902822992
PECOS PAC ID: 2961315221
Enrollment ID: O20040619000043
Entity NameNorth Shore-lij Medical Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053688572
PECOS PAC ID: 3375701568
Enrollment ID: O20120220000262
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. Dawn E Williamson 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
Dawn E Williamson, MD
2 Astro Pl,
Dix Hills, NY 11746-5707

Ph: (631) 848-8064		Dawn E Williamson, MD
455 E Bay Dr,
Long Beach, NY 11561-2301

Ph: (516) 897-1100

Reviews and Comments


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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.