Alexandra B Kiefer, MD - Medicare Obstetrics & Gynecology in Stony Brook, NY

Alexandra B Kiefer, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Stony Brook, New York. Her current practice location is 101 Nicolls R Obgyn Dept Hsc Level 9, Stony Brook, New York. You can reach out to her office (for appointments etc.) via phone at (631) 444-4686.

Alexandra B Kiefer is licensed to practice in New York (license number 315865) 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 1689107641.

Contact Information

Alexandra B Kiefer, MD
101 Nicolls R Obgyn Dept Hsc Level 9,
Stony Brook, NY 11794-0001
(631) 444-4686
Not Available

Map and Direction




Physician's Profile

Full NameAlexandra B Kiefer
GenderFemale
SpecialityObstetrics & Gynecology
Location101 Nicolls R Obgyn Dept Hsc Level 9, 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: 1689107641
  • Provider Enumeration Date: 04/06/2017
  • Last Update Date: 05/08/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 2668700196
  • Enrollment ID: I20220714001865

Medical Identifiers

Medical identifiers for Alexandra B Kiefer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1689107641NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 315865 (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. Alexandra B Kiefer allows following entities to bill medicare on her behalf.
Entity NameUniversity Associates In Obstetrics & Gynecology University Faculty P
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538114723
PECOS PAC ID: 9032001045
Enrollment ID: O20040325001243

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. Alexandra B Kiefer 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
Alexandra B Kiefer, MD
101 Nicolls R Obgyn Dept Hsc Level 9,
Stony Brook, NY 11794-0001

Ph: (631) 444-4686
Alexandra B Kiefer, MD
101 Nicolls R Obgyn Dept Hsc Level 9,
Stony Brook, NY 11794-0001

Ph: (631) 444-4686

Reviews and Comments


Obstetrics & Gynecology Doctors in Stony Brook, NY

Noel Omar Mohammed, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 1 Stadium Rd., Stony Brook University Student Health Service, Stony Brook, NY 11790
Phone: 631-632-6740    
Dr. Michael L. Pearl, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: Hsc 9th Fl. Rm 065, Stony Brook University Hospital, Stony Brook, NY 11790
Phone: 631-444-6907    
Dr. Andre Plair, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: Stony Brook University Medical Ctr, Department Of Ob/gyn, Hsc, T9, Stony Brook, NY 11794
Phone: 631-444-4686    Fax: 631-444-4622
Scott Berman, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Nesconset Hwy, Building 12 Suite 45, Stony Brook, NY 11790
Phone: 631-675-9010    Fax: 631-675-9009
Dr. Christian P Westermann, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 2500 Route 347, Building 19c, Suite 72, Stony Brook, NY 11790
Phone: 631-751-9700    Fax: 631-751-6979
Nicole Lynn Massad, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 101 Nicolls Rd, Stony Brook, NY 11794
Phone: 631-689-8333    
Dr. Diana Calero-kunda, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 101 Nicolls Road Hsc Level 9 Rm 090, Stony Brook, NY 11794
Phone: 631-444-2757    Fax: 631-444-6155

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.