Nathalie Rioux, MD - Medicare Ophthalmology in Greenfield, MA

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Nathalie Rioux, MD is a medicare enrolled "Ophthalmology - Glaucoma Specialist" physician in Greenfield, Massachusetts. She graduated from medical school in 1991 and has 33 years of diverse experience with area of expertise as Ophthalmology. Her current practice location is Pioneer Valley Ophthalmic Consultants, 489 Bernardston Road, Greenfield, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (413) 775-9900.

Nathalie Rioux is licensed to practice in Massachusetts (license number 156165) 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 1164510095.

Contact Information

Nathalie Rioux, MD
Pioneer Valley Ophthalmic Consultants, 489 Bernardston Road,
Greenfield, MA 01301
(413) 775-9900
Not Available

Map and Direction




Physician's Profile

Full NameNathalie Rioux
GenderFemale
SpecialityOphthalmology
Experience33 Years
LocationPioneer Valley Ophthalmic Consultants, Greenfield, 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:
  • Nathalie Rioux graduated from medical school in 1991
  NPI Data:
  • NPI Number: 1164510095
  • Provider Enumeration Date: 10/10/2006
  • Last Update Date: 01/15/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 0143288415
  • Enrollment ID: I20050103000899

Medical Identifiers

Medical identifiers for Nathalie Rioux such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164510095NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207WX0009XOphthalmology - Glaucoma Specialist 156165 (Massachusetts)Primary
207W00000XOphthalmology 156165 (Massachusetts)Secondary

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. Nathalie Rioux allows following entities to bill medicare on her behalf.
Entity NamePioneer Valley Ophthalmic Consultants, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619025061
PECOS PAC ID: 2062470321
Enrollment ID: O20050103000866
Entity NameRioux Eye Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508527037
PECOS PAC ID: 0547654568
Enrollment ID: O20220308000756

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. Nathalie Rioux 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
Nathalie Rioux, MD
Pioneer Valley Ophthalmic, 489 Bernardston Road,
Greenfield, MA 01301

Ph: (413) 775-9900		Nathalie Rioux, MD
Pioneer Valley Ophthalmic Consultants, 489 Bernardston Road,
Greenfield, MA 01301

Ph: (413) 775-9900

Reviews and Comments


Ophthalmology Doctors in Greenfield, MA

Robert J Austin, M.D.
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Phone: 413-774-3320    
Dr. John F Warren, MD
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Practice Location: 33 Riddell St, Greenfield, MA 01301
Phone: 413-774-7016    Fax: 413-773-7596

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.