Richard C Mcmahon, MD - Medicare Internal Medicine in Hudson, MA

Richard C Mcmahon, MD is a medicare enrolled "Internal Medicine" physician in Hudson, Massachusetts. He went to Tufts University School Of Medicine and graduated in 1977 and has 47 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Charles River Medical Associates, Pc and his current practice location is 101 Coolidge St, Downstairs, Hudson, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (978) 562-0757.

Richard C Mcmahon is licensed to practice in Massachusetts (license number 51250) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1114949823.

Contact Information

Richard C Mcmahon, MD
101 Coolidge St, Downstairs,
Hudson, MA 01749-1354
(978) 562-0757
(978) 562-9299

Map and Direction




Physician's Profile

Full NameRichard C Mcmahon
GenderMale
SpecialityInternal Medicine
Experience47 Years
Location101 Coolidge St, Hudson, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Richard C Mcmahon attended and graduated from Tufts University School Of Medicine in 1977
  NPI Data:
  • NPI Number: 1114949823
  • Provider Enumeration Date: 07/24/2006
  • Last Update Date: 01/17/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 2567418387
  • Enrollment ID: I20050324000776

Medical Identifiers

Medical identifiers for Richard C Mcmahon such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1114949823NPI-NPPES
6177093MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 51250 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Preferred Transitions Home Health Care IncMilford, MAHome health agency
Umass Memorial Healthcare-marlborough HospitalMarlborough, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Charles River Medical Associates, Pc347663045098

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. Richard C Mcmahon allows following entities to bill medicare on his behalf.
Entity NameCharles River Medical Associates, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598215204
PECOS PAC ID: 3476630450
Enrollment ID: O20161122000110

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. Richard C Mcmahon 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
Richard C Mcmahon, MD
171 Main St Ste 203b,
Ashland, MA 01721-1187

Ph: (508) 881-3029
Richard C Mcmahon, MD
101 Coolidge St, Downstairs,
Hudson, MA 01749-1354

Ph: (978) 562-0757

Reviews and Comments


Internal Medicine Doctors in Hudson, MA

Michele S Goh, MD
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Practice Location: 157 Washington St, Hudson, MA 01749
Phone: 978-562-0564    Fax: 978-562-5646
Dr. David W Duhme, M.D.
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Practice Location: 53 Deer Path, Hudson, MA 01749
Phone: 978-310-7038    
Kanwon Shaw, PA-C
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Phone: 978-562-3536    Fax: 978-562-4626
Anupam Mathur, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 157 Washington St, Hudson, MA 01749
Phone: 978-562-0564    Fax: 978-562-5646
Christian L Potter-kablotsky, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 1 Cabot Rd, Hudson, MA 01749
Phone: 978-562-4160    Fax: 978-562-4626

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.