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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. MARY ELLEN RIORDAN LICSW
NPI 1245288372
Social Worker - Clinical in Bedford, MA

Active since May 04, 2006PECOS Enrolled
200 SPRINGS RD, UNIT 62CDN, BEDFORD, MA 01730(781) 687-3306 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 13, 2026, Jul 21, 2022 (2 updates tracked since 2022).

About Ms. Mary Ellen Riordan Licsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARY ELLEN RIORDAN LICSW (NPI 1245288372) is an individual clinical provider in Bedford, Massachusetts, licensed in Massachusetts (110114) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245288372
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. MARY ELLEN RIORDANCredential: LICSW
Location Address200 SPRINGS RD, UNIT 62CDNBedford, MA 01730-1114
Mailing Address200 Springs Rd, Unit 62cdnBedford, MA 01730-1114 · (781) 687-3306
Phone(781) 687-3306
Sole ProprietorNo
Enumeration DateMay 4, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1245288372 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MA · 110114
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
200 SPRINGS RD, Bedford, MA 01730
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Mary Ellen Riordan Licsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01730 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $63.72 – $189.86
Typical copayment $0.00 (range $15.93 – $47.46)
Most-billed visit code NA
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIAN JAMES STEVENSON PH.D.
Psychologist (Counseling)
200 SPRINGS RD, PSYCHOLOGY DEPARTMENT
BEDFORD, MA 01730
Middlesex County (781) 687-3919
KATHERINE URBAN
Psychologist (Health Service)
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (781) 687-2000
DR. DANIEL DE LENA PHARMD
Pharmacist
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (508) 423-7544
JACOB PHILLIP MIHKELSON PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (781) 687-2000
JENNIFER CRONIN DPT
Physical Therapist
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (781) 687-2000
KERRI ARLENE ALLEY
Social Worker (Clinical)
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (781) 266-8347
MS. JANE E LIVELY RD
Dietitian, Registered
200 SPRINGS RD, ENRM VA HOSPITAL
BEDFORD, MA 01730
Middlesex County (781) 687-2570
AMY CLIFFORD
Physical Therapist
200 SPRINGS RD
BEDFORD, MA 01730
Middlesex County (781) 809-0531

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Ellen Riordan's NPI number?

The NPI number for Mary Ellen Riordan is 1245288372. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Mary Ellen Riordan located?

Mary Ellen Riordan practices at 200 Springs Rd Unit 62cdn, Bedford, MA 01730. The listed phone number is (781) 687-3306.

What is Mary Ellen Riordan's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Mary Ellen Riordan enrolled in Medicare?

Yes. Mary Ellen Riordan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Ellen Riordan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.