Dr Louis J Avvento, MD - Medicare Medical Oncology in Southampton, NY

Dr Louis J Avvento, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Southampton, New York. He graduated from medical school in 1981 and has 43 years of diverse experience with area of expertise as Medical Oncology. He is a member of the group practice North Shore Hematology Oncology Associates Pc and his current practice location is 640 County Road 39, Southampton, New York. You can reach out to his office (for appointments etc.) via phone at (631) 751-3000.

Dr Louis J Avvento is licensed to practice in New York (license number 161779) 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 1417999533.

Contact Information

Dr Louis J Avvento, MD
640 County Road 39,
Southampton, NY 11968-5219
(631) 751-3000
(631) 509-6559

Map and Direction




Physician's Profile

Full NameDr Louis J Avvento
GenderMale
SpecialityMedical Oncology
Experience43 Years
Location640 County Road 39, Southampton, 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 Louis J Avvento graduated from medical school in 1981
  NPI Data:
  • NPI Number: 1417999533
  • Provider Enumeration Date: 06/12/2006
  • Last Update Date: 01/30/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 7214017516
  • Enrollment ID: I20080404000553

Medical Identifiers

Medical identifiers for Dr Louis J Avvento such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417999533NPI-NPPES
830007838OtherNYRAIL ROAD MEDICARE
01104521MedicaidNY
14B862OtherNYBLUE CROSS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 161779 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
East End Hospice, IncWesthampton beach, NYHospice
Suny/stony Brook University HospitalStony brook, NYHospital
Peconic Bay Medical CenterRiverhead, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North Shore Hematology Oncology Associates Pc1456243641344

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. Dr Louis J Avvento allows following entities to bill medicare on his behalf.
Entity NameNorth Shore Hematology Oncology Associates Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396794574
PECOS PAC ID: 1456243641
Enrollment ID: O20040324001766

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 Louis J Avvento 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 Louis J Avvento, MD
1500 Route 112 Bldg 4,
Port Jefferson Station, NY 11776-8055

Ph: (631) 751-0000
Dr Louis J Avvento, MD
640 County Road 39,
Southampton, NY 11968-5219

Ph: (631) 751-3000

Reviews and Comments


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Practice Location: 325 Meeting House Ln Ste 302, Southampton, NY 11968
Phone: 631-283-8008    Fax: 631-283-8870

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).

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