Mallory Sin, LDN, RD - Medicare Dietitian in Boston, MA

Mallory Sin, LDN, RD is a medicare enrolled "Dietitian, Registered" provider in Boston, Massachusetts. She graduated from medical school in 2012 and has 12 years of diverse experience with area of expertise as Registered Dietitian Or Nutrition Professional. She is a member of the group practice Alisonrd Llc and her current practice location is One Joslin Place, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (917) 825-0376.

Mallory Sin is licensed to practice in Massachusetts (license number 1076733) 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 1821426826.

Contact Information

Mallory Sin, LDN, RD
One Joslin Place,
Boston, MA 02215-3432
(917) 825-0376
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameMallory Sin
GenderFemale
SpecialityRegistered Dietitian Or Nutrition Professional
Experience12 Years
LocationOne Joslin Place, 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:
  • Mallory Sin graduated from medical school in 2012
  NPI Data:
  • NPI Number: 1821426826
  • Provider Enumeration Date: 10/29/2013
  • Last Update Date: 11/27/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 2769724871
  • Enrollment ID: I20190419000524

Medical Identifiers

Medical identifiers for Mallory Sin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1821426826NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
133V00000XDietitian, Registered 1076733 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Alisonrd Llc69011633694

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. Mallory Sin allows following entities to bill medicare on her behalf.
Provider NameJoslin Clinic Inc
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1528003621
PECOS PAC ID: 5092794883
Enrollment ID: O20040715000769
Provider NameAlisonrd Llc
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1891221834
PECOS PAC ID: 6901163369
Enrollment ID: O20171121000082

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. Mallory Sin 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
Mallory Sin, LDN, RD
1290 Tremont St,
Roxbury, MA 02120-3432

Ph: () -
Mallory Sin, LDN, RD
One Joslin Place,
Boston, MA 02215-3432

Ph: (917) 825-0376

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.