MARY FAILLA (RD, LDN) – Registered Dietitian, NPI 1659747921

MARY FAILLA (RD, LDN) is a healthcare provider. based in Plainfield, Illinois. specializing in REGISTERED DIETITIAN OR NUTRITION PROFESSIONAL. They hold the professional credentials RD, LDN. They hold a License No. 164.005814 (IL). The NPI Number for MARY FAILLA (RD, LDN) is 1659747921

Main info

Female
15 Years Of Experience
Accepts Medicare Assignment
Name
MARY FAILLA (RD, LDN)
NPI
1659747921
Phone
Not provided
Address
16940 S PLAINSMAN CT
Enumeration Date
20 August 2015
Last Update Date
22 January 2021

Doctor Profile

Medical School Name
OTHER
Secondary Phone
6309862800
Graduation Year
2011 (15 years ago)
PAC ID
7315214699
Group Practice PAC ID
4183126261
Professional Enrollment ID
I20170517002678
Address ID
IL601943550SC25XXXRDXX400

Contacts

Secure Messaging
mary.hayen.1@380.direct.athenahealth.com
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience44
Completeness85
Years active:10State licenses:1Other namesUpdated within 12 months

311 REGISTERED DIETITIAN OR NUTRITION PROFESSIONAL in IL

Provider Addresses for MARY FAILLA (RD, LDN)

  • 16940 S PLAINSMAN CT

    PLAINFIELD, IL 605869270

    Phone:

    Type: Mailing

  • 25 E SCHAUMBURG RD

    SUITE 101

    SCHAUMBURG, IL 601943550

    Phone: (847) 252-6098

    Type: Location

  • 25 E SCHAUMBURG RD STE 101

    SCHAUMBURG, IL 601943548

    Phone: (847) 252-6090

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

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: 2017-05-17

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
I20170517002678IRegistered Dietitian Or Nutrition ProfessionalILTBD

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.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60586)

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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: 4183126261View full group profile
NameSpecialtyState
Nurse PractitionerIL
Registered Dietitian Or Nutrition ProfessionalIL
Family PracticeIL
Registered Dietitian Or Nutrition ProfessionalIL
Family PracticeIL
Registered Dietitian Or Nutrition ProfessionalIL
Nurse PractitionerIL
Nurse PractitionerIL
Nurse PractitionerWI
Nurse PractitionerIL

Reviews

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Frequently asked questions

What unique ID ties claims to MARY FAILLA (RD, LDN)?
NPI 1659747921 is assigned to MARY FAILLA (RD, LDN) under the national enumeration system.
Is MARY FAILLA (RD, LDN)'s NPI currently valid?
The extract we use shows MARY FAILLA (RD, LDN) as active.
Does MARY FAILLA (RD, LDN) list a primary specialty?
If you are matching referrals, note Registered Dietitian for MARY FAILLA (RD, LDN). Clinical services aligned with this taxonomy classification.
What location metadata exists for MARY FAILLA (RD, LDN)?
The page summarizes Plainfield, Illinois for MARY FAILLA (RD, LDN); expand the address list for detail.
Is this NPI for an individual or an organization?
This listing corresponds to an Individual Provider.

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