KATHLEEN RIORDAN – Acute Care Nurse Practitioner, NPI 1639555345

KATHLEEN RIORDAN is a healthcare provider. based in Milton, Massachusetts. specializing in NURSE PRACTITIONER. They hold a License No. RN2292187 (MA). The NPI Number for KATHLEEN RIORDAN is 1639555345

Main info

Female
Sole Proprietor
11 Years Of Experience
Accepts Medicare Assignment
Name
KATHLEEN RIORDAN
NPI
1639555345
Phone
(617) 480-0834
Address
3 WALDO RD
Enumeration Date
4 August 2015
Last Update Date
4 August 2015

Doctor Profile

Medical School Name
OTHER
Secondary Phone
-
Graduation Year
2015 (11 years ago)
PAC ID
3476863564
Group Practice PAC ID
4486567104
Professional Enrollment ID
I20151102000876
Address ID
MA022155400BO330XXAVEX300
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience34
Completeness75
Years active:10State licenses:1Digital endpointsOther names

8,971 NURSE PRACTITIONER in MA

Provider Addresses for KATHLEEN RIORDAN

  • 3 WALDO RD

    MILTON, MA 021861723

    Phone: (617) 480-0834

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $224.

Total Amount is formed as General ($224) + Research ($0) + Ownership ($0) = $224.

Last reported payment date: 2023-11-14 • Largest payer in this snapshot: Chiesi USA, Inc. ($117).

Total Amount

$224

General + Research + Ownership

Payments

2

Total payment records

General Amount

$224

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-11-14

Latest reported date

Top Companies

Largest payers in this snapshot

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: 2015-11-02

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
I20151102000876INurse PractitionerMATBD

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
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes1815$0
View full utilization report →

Insurance plans in this area (ZIP 02186)

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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: 4486567104View full group profile

Reviews

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Frequently asked questions

Where can patients find KATHLEEN RIORDAN's NPI?
You can confirm KATHLEEN RIORDAN with NPI 1639555345; it appears in the national provider directory.
Is KATHLEEN RIORDAN's enrollment marked active?
An active flag here means the NPI record is not in a deactivated state.
Does KATHLEEN RIORDAN list a primary specialty?
If you are matching referrals, note Acute Care Nurse Practitioner for KATHLEEN RIORDAN. Clinical services aligned with this taxonomy classification.
Where is KATHLEEN RIORDAN's primary listing?
We display Milton, Massachusetts because that is what the record indicates for KATHLEEN RIORDAN.
Does Medicare enrollment show here?
Medicare enrollment screens are separate from the basic NPI extract shown here.

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