Rebecca Zash, MD - Medicare Internal Medicine in Boston, MA

Rebecca Zash, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Boston, Massachusetts. She graduated from medical school in 2008 and has 16 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc and her current practice location is 330 Brookline Ave, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 677-7000.

Rebecca Zash is licensed to practice in Massachusetts (license number 262823) 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 1326214099.

Contact Information

Rebecca Zash, MD
330 Brookline Ave,
Boston, MA 02215-5400
(617) 677-7000
Not Available

Map and Direction




Physician's Profile

Full NameRebecca Zash
GenderFemale
SpecialityInternal Medicine
Experience16 Years
Location330 Brookline Ave, Boston, Massachusetts
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:
  • Rebecca Zash graduated from medical school in 2008
  NPI Data:
  • NPI Number: 1326214099
  • Provider Enumeration Date: 05/02/2008
  • Last Update Date: 07/11/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 2769778208
  • Enrollment ID: I20160908001912

Medical Identifiers

Medical identifiers for Rebecca Zash such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1326214099NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 262823 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc44865671041337

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. Rebecca Zash allows following entities to bill medicare on her behalf.
Entity NameHarvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194765438
PECOS PAC ID: 4486567104
Enrollment ID: O20031204000918
Entity NameBeth Israel Deaconess Medical Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548202641
PECOS PAC ID: 8123936119
Enrollment ID: O20041001000827
Entity NameAssociated Physicians Of Harvard Medical Faculty Physicians At Beth Is
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497151773
PECOS PAC ID: 6305749987
Enrollment ID: O20150211001099

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. Rebecca Zash 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
Rebecca Zash, MD
13 Montvale Rd,
Worcester, MA 01609-1716

Ph: (617) 275-6630
Rebecca Zash, MD
330 Brookline Ave,
Boston, MA 02215-5400

Ph: (617) 677-7000

Reviews and Comments


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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.