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

CATHERINE L MATHIEU M.D.
NPI 1447249057
Pathology - Clinical Pathology/Laboratory Medicine in Winchester, VA

Q: What is Catherine Mathieu's NPI number?

The NPI number for Catherine Mathieu is 1447249057. It was assigned to this individual provider in the NPPES registry on October 17, 2005.

Q: What is Catherine Mathieu's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology/Laboratory Medicine, with taxonomy code 207ZP0105X.

Q: When was this NPI record last updated?

The NPPES record for Catherine Mathieu 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 40 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.

Active since October 17, 2005PECOS Enrolled

1840 AMHERST ST, WINCHESTER, VA 22601(540) 536-8790 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Catherine L Mathieu M.d. NPPES

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

CATHERINE L MATHIEU M.D. (NPI 1447249057) is an individual clinical pathology/laboratory medicine provider in Winchester, Virginia, licensed in Virginia (0101057138) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447249057

Entity TypeIndividualFemale

Primary Taxonomy207ZP0105X

Provider Legal NameCATHERINE L MATHIEUCredential: M.D.

Location Address1840 AMHERST STWinchester, VA 22601-2808

Mailing Address560 Glendobbin RdWinchester, VA 22603-3327 · (540) 678-0939

Phone(540) 536-8790

Sole ProprietorNo

Enumeration DateOctober 17, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1447249057 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 6

★ Primary SpecialtyPathology · Clinical Pathology/Laboratory MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0105X

License✔ Licensed in VA · 0101057138

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X · License 0101057138 (VA)

Also ListedPathology · CytopathologyTaxonomy 207ZC0500X · License 0101057138 (VA)

Also ListedPathology · HematologyTaxonomy 207ZH0000X · License 0101057138 (VA)

Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X · License 0101057138 (VA)

Also ListedPathology · Chemical PathologyTaxonomy 207ZP0104X · License 0101057138 (VA)

1840 AMHERST ST, Winchester, VA 22601

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Other Identifiers 1

Medicaid6606997VA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Catherine L Mathieu M.d. 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 22601 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Quantitative Immunohistochemical (IHC) Evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) for Breast Cancer Patients

This is a measure based on whether quantitative evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) by immunohistochemistry (IHC) uses the system recommended in the current ASCO/CAP Guidelines for Human Epidermal Growth Factor Receptor 2…

100%36 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

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