Nastassia De Souza, MD - Medicare Endocrinology in Bellport, NY

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Nastassia De Souza, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Bellport, New York. She graduated from medical school in 2013 and has 11 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice New York University and her current practice location is 515 Bellport Ave, Bellport, New York. You can reach out to her office (for appointments etc.) via phone at (631) 288-7120.

Nastassia De Souza is licensed to practice in New York (license number 323186) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1891178836.

Contact Information

Nastassia De Souza, MD
515 Bellport Ave,
Bellport, NY 11713-1711
(631) 288-7120
(929) 455-9423

Map and Direction




Physician's Profile

Full NameNastassia De Souza
GenderFemale
SpecialityEndocrinology
Experience11 Years
Location515 Bellport Ave, Bellport, New York
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Nastassia De Souza graduated from medical school in 2013
  NPI Data:
  • NPI Number: 1891178836
  • Provider Enumeration Date: 07/08/2015
  • Last Update Date: 09/18/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0244531184
  • Enrollment ID: I20230628001030

Medical Identifiers

Medical identifiers for Nastassia De Souza such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891178836NPI-NPPES
103292986MedicaidPA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MT209620 (Pennsylvania)Secondary
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 323186 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Long Island Community HospitalPatchogue, NYHospital
York HospitalYork, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
New York University13552324224431

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. Nastassia De Souza allows following entities to bill medicare on her behalf.
Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20081202000185
Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20090822000026

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. Nastassia De Souza 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
Nastassia De Souza, MD
515 Bellport Ave,
Bellport, NY 11713-1711

Ph: (631) 288-7120		Nastassia De Souza, MD
515 Bellport Ave,
Bellport, NY 11713-1711

Ph: (631) 288-7120

Reviews and Comments


Internal Medicine Doctors in Bellport, NY

Anthonette Rosemarie Desire, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 1 Station Ct, Building A Suite 1, Bellport, NY 11713
Phone: 631-803-8247    Fax: 631-803-8251
Dr. Richard Edward Edstrom Jr., M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 926 S Country Rd, Bellport, NY 11713
Phone: 631-286-6130    Fax: 631-286-6130
Dr. Nathanael Desire, D.O.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 1 Station Ct, Bldg A Suite 1, Bellport, NY 11713
Phone: 631-803-8247    Fax: 631-803-8251

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.