NATHALIE RIOUX (M.D.) – Glaucoma Specialist (Ophthalmology) Physician, NPI 1164510095

NATHALIE RIOUX (M.D.) is a healthcare provider. based in Greenfield, Massachusetts. specializing in OPHTHALMOLOGY. They hold the professional credentials M.D.. They hold a License No. 156165 (MA). The NPI Number for NATHALIE RIOUX (M.D.) is 1164510095

Main info

Female
35 Years Of Experience
Accepts Medicare Assignment
Name
NATHALIE RIOUX (M.D.)
NPI
1164510095
Phone
(413) 775-9900
Address
PIONEER VALLEY OPHTHALMIC CONSULTANTS
Enumeration Date
10 October 2006
Last Update Date
15 January 2022

Doctor Profile

Medical School Name
OTHER
Secondary Phone
4137759900
Graduation Year
1991 (35 years ago)
PAC ID
0143288415
Group Practice PAC ID
0547654568
Professional Enrollment ID
I20050103000899
Address ID
MA013011239GR489XXRDXX301
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience67
Completeness75
Years active:19State licenses:1Digital endpointsOther names

801 OPHTHALMOLOGY in MA

Provider Addresses for NATHALIE RIOUX (M.D.)

  • PIONEER VALLEY OPHTHALMIC CONSULTANTS

    489 BERNARDSTON ROAD

    GREENFIELD, MA 01301

    Phone: (413) 775-9900

    Type: Location

  • PIONEER VALLEY OPHTHALMIC

    489 BERNARDSTON ROAD

    GREENFIELD, MA 01301

    Phone: (413) 775-9900

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 19 Open Payments records for all available years, with a total value of $363.

Total Amount is formed as General ($363) + Research ($0) + Ownership ($0) = $363.

Last reported payment date: 2024-11-12 • Largest payer in this snapshot: Ocular Therapeutix, Inc. ($180).

Total Amount

$363

General + Research + Ownership

Payments

19

Total payment records

General Amount

$363

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-11-12

Latest reported date

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2005-01-03

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20050103000899IOphthalmologyMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
92014Established patient complete exam of visual system1,4511,330$0
92012Established patient problem focused exam of visual system952665$0
92133Imaging of optic nerve850652$0
92083Exam of visual field with extended testing427401$0
92134Imaging of retina338282$0
View full utilization report →

Insurance plans in this area (ZIP 01301)

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Provider's Procedures

NATHALIE RIOUX (M.D.) performs procedures in OPHTHALMOLOGY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
OPHTHALMOLOGYMA92083Measurement of field of vision during daylight conditions490463
OPHTHALMOLOGYMA92134Diagnostic imaging of retina3635

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 0547654568View full group profile
NameSpecialtyState
O P T O M E T R YMA

Reviews

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Frequently asked questions

Is NATHALIE RIOUX (M.D.) listed with a National Provider Identifier?
Yes — NATHALIE RIOUX (M.D.) has NPI 1164510095 on file in the registry.
Is NATHALIE RIOUX (M.D.) shown as active in public data?
Registry records indicate NATHALIE RIOUX (M.D.) maintains an active NPI.
What clinical focus is listed for NATHALIE RIOUX (M.D.)?
At a glance, NATHALIE RIOUX (M.D.) is tied to Glaucoma Specialist (Ophthalmology) Physician. Clinical services aligned with this taxonomy classification.
What practice footprint exists for NATHALIE RIOUX (M.D.)?
Travel planning: use Greenfield, Massachusetts as the reference point for NATHALIE RIOUX (M.D.), then confirm.
When was this NPI issued?
Enumeration for NATHALIE RIOUX (M.D.) is noted as October 10, 2006 where the registry provides it.

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