Anna Andrzejczyk, - Medicare Internal Medicine in Stony Brook, NY

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Anna Andrzejczyk, is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Stony Brook, New York. Her current practice location is Dept. Of Internal Medicine, Hsc Level 16-020, Suny Stony Brook, Stony Brook, New York. You can reach out to her office (for appointments etc.) via phone at (631) 444-2493.

Anna Andrzejczyk is licensed to practice in New York (license number 318693-01) 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 1275030231.

Contact Information

Anna Andrzejczyk,
Dept. Of Internal Medicine, Hsc Level 16-020, Suny Stony Brook,
Stony Brook, NY 11794
(631) 444-2493
Not Available

Map and Direction




Physician's Profile

Full NameAnna Andrzejczyk
GenderFemale
SpecialityInternal Medicine - Hematology & Oncology
LocationDept. Of Internal Medicine, Stony Brook, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1275030231
  • Provider Enumeration Date: 04/06/2018
  • Last Update Date: 09/18/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 6800125121
  • Enrollment ID: I20240722001773

Medical Identifiers

Medical identifiers for Anna Andrzejczyk such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1275030231NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 318693-01 (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. Anna Andrzejczyk allows following entities to bill medicare on her behalf.
Entity NameStony Brook Internists University Faculty Practice Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295778371
PECOS PAC ID: 9133019821
Enrollment ID: O20040317000450
Entity NameStony Brook Internists University Faculty Practice Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659310241
PECOS PAC ID: 9133019821
Enrollment ID: O20040731000094

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. Anna Andrzejczyk 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
Anna Andrzejczyk,
Dept. Of Internal Medicine, Hsc Level 16-020, Suny Stony Brook,
Stony Brook, NY 11794

Ph: () -		Anna Andrzejczyk,
Dept. Of Internal Medicine, Hsc Level 16-020, Suny Stony Brook,
Stony Brook, NY 11794

Ph: (631) 444-2493

Reviews and Comments


Internal Medicine Doctors in Stony Brook, NY

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Dr. Richard Lin, M.D.
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Phone: 631-444-5400    Fax: 631-444-7538
Dr. John Anthony Savino Iii, M.D.
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Practice Location: 1320 Stony Brook Rd Bldg D, Stony Brook, NY 11790
Phone: 212-241-1653    Fax: 212-289-6393

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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