DR. CATHERINE ANNE RIORDAN MD - NPI 1952305997

Q: What is Catherine Riordan's NPI number?

The NPI number for Catherine Riordan is 1952305997. It was assigned to this individual provider in the NPPES registry on June 8, 2005.

Q: What is Catherine Riordan's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Catherine Riordan was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

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About Dr. Catherine Anne Riordan Md NPPES

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

DR. CATHERINE ANNE RIORDAN MD (NPI 1952305997) is an individual pediatrics provider in Worcester, Massachusetts, licensed in Massachusetts (80757) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1952305997

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. CATHERINE ANNE RIORDANCredential: MD

Location Address421 CHANDLER STWorcester, MA 01602-2915

Mailing Address421 Chandler StWorcester, MA 01602-2915 · (508) 752-4511 · Fax (508) 797-4729

Phone(508) 752-4511

Fax(508) 797-4729

Sole ProprietorNo

Enumeration DateJune 8, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1952305997 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MA · 80757

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

421 CHANDLER ST, Worcester, MA 01602

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Other Identifiers 1

Medicaid9774343MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Catherine Anne Riordan Md 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 01602 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

$90.70 typical visit price

range $58.86 – $177.36

Typical copayment $22.67 (range $14.71 – $44.34)

Most-billed visit code 99203

Established Patient

$103.48 typical visit price

range $19.11 – $144.84

Typical copayment $25.87 (range $4.77 – $36.21)

Most-billed visit code 99214

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 5

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

DR. LYNDA M YOUNG MD

Pediatrics