Katherine O'brien, RD, LDN - Medicare Dietitian in Acton, MA

Katherine O'brien, RD, LDN is a medicare enrolled "Dietitian, Registered" provider in Acton, Massachusetts. Her current practice location is 321 Main St, Acton, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (978) 635-8700.

Katherine O'brien is licensed to practice in Massachusetts (license number 4418) 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 1588129639.

Contact Information

Katherine O'brien, RD, LDN
321 Main St,
Acton, MA 01720-3799
(978) 635-8700
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameKatherine O'brien
GenderFemale
SpecialityDietitian, Registered
Location321 Main St, Acton, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1588129639
  • Provider Enumeration Date: 02/04/2019
  • Last Update Date: 02/11/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 0345589420
  • Enrollment ID: I20190307001491

Medical Identifiers

Medical identifiers for Katherine O'brien such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1588129639NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
133V00000XDietitian, Registered 4418 (Massachusetts)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. Katherine O'brien allows following entities to bill medicare on her behalf.
Provider NameActon Medical Associates Pc
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1447365408
PECOS PAC ID: 7315919404
Enrollment ID: O20040810000196

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. Katherine O'brien 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
Katherine O'brien, RD, LDN
33 Marlboro Rd,
Stow, MA 01775-1401

Ph: (978) 467-5533
Katherine O'brien, RD, LDN
321 Main St,
Acton, MA 01720-3799

Ph: (978) 635-8700

Reviews and Comments


Dietitian, Registered in Acton, MA

Jessica Beler,
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Shane Erica Lazar, RDN
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Meera Boghani, R.D.
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Julie Teal, RD, LDN
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Practice Location: 20 Main St, Acton, MA 01720
Phone: 978-631-0322    
Sheryl Fox, MS, RD
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Phone: 978-631-4157    
Tealtrition, Llc
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Practice Location: 20 Main St, Acton, MA 01720
Phone: 978-631-0322    

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.