Margaret M Andersen, MD - Medicare Internal Medicine in Valhalla, NY

Margaret M Andersen, MD is a medicare enrolled "Internal Medicine" physician in Valhalla, New York. She went to State University Of New York At Stony Brook, School Of Medicine and graduated in 1994 and has 30 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Westchester Health Medical Pc and her current practice location is 465 Columbus Ave Ste 370, Valhalla, New York. You can reach out to her office (for appointments etc.) via phone at (914) 769-1600.

Margaret M Andersen is licensed to practice in New York (license number 202880) 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 1679642938.

Contact Information

Margaret M Andersen, MD
465 Columbus Ave Ste 370,
Valhalla, NY 10595-1336
(914) 769-1600
(914) 769-1610

Map and Direction




Physician's Profile

Full NameMargaret M Andersen
GenderFemale
SpecialityInternal Medicine
Experience30 Years
Location465 Columbus Ave Ste 370, Valhalla, 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:
  • Margaret M Andersen attended and graduated from State University Of New York At Stony Brook, School Of Medicine in 1994
  NPI Data:
  • NPI Number: 1679642938
  • Provider Enumeration Date: 11/08/2006
  • Last Update Date: 10/27/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 7012925399
  • Enrollment ID: I20060328000550

Medical Identifiers

Medical identifiers for Margaret M Andersen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1679642938NPI-NPPES
01749233MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 202880 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northern Westchester HospitalMount kisco, NYHospital
Phelps Memorial Hospital CenterSleepy hollow, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Westchester Health Medical Pc731522175171

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. Margaret M Andersen allows following entities to bill medicare on her behalf.
Entity NameWestchester Health Medical Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386188647
PECOS PAC ID: 7315221751
Enrollment ID: O20170316000446

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. Margaret M Andersen 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
Margaret M Andersen, MD
465 Columbus Ave Ste 370,
Valhalla, NY 10595-1336

Ph: (914) 769-1600
Margaret M Andersen, MD
465 Columbus Ave Ste 370,
Valhalla, NY 10595-1336

Ph: (914) 769-1600

Reviews and Comments


Internal Medicine Doctors in Valhalla, NY

Radhika Voleti, M.D
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Phone: 914-493-7000    
Thai Quoc Nguyen, MD
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Practice Location: 100 Woods Rd, Valhalla, NY 10595
Phone: 347-944-4364    
Fareena Nawaz, MD
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Phone: 914-493-7000    
Dr. Steven Silverman, M.D.
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Practice Location: 401 Columbus Ave, Valhalla, NY 10595
Phone: 914-769-0268    Fax: 914-769-6303
Ms. Dana Rachel Berg, M.D.
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Practice Location: 100 Woods Rd, Valhalla, NY 10595
Phone: 914-533-4111    
Dr. Leanne Michelle Forman, MD
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Medicare: Accepting Medicare Assignments
Practice Location: Westchester Medical Center, Grasslands Road, Cedarwood Hall Occupational Health, Valhalla, NY 10595
Phone: 914-493-5140    Fax: 914-493-7359
Dr. Jane Mencher Gold, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 401 Columbus Ave, Suite Ll1, Valhalla, NY 10595
Phone: 914-769-0268    Fax: 914-769-6303

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.