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DR. KATHRYN LEIGH MAZZA D.O.
NPI 1497196471
Internal Medicine in Guilford, CT

Active since July 08, 2013PECOS Enrolled
1591 BOSTON POST RD STE 100, GUILFORD, CT 06437(203) 453-9911(203) 458-1905 Get Directions Write a Review

NPPES record last updated: August 19, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 17, 2024, Sep 11, 2017 (2 updates tracked since 2017).

About Dr. Kathryn Leigh Mazza D.o. NPPES

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

DR. KATHRYN LEIGH MAZZA D.O. (NPI 1497196471) is an individual internal medicine provider in Guilford, Connecticut, licensed in Connecticut (079272) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS and maintains a secondary practice location in Bronx.

NPPES Registry Identity

NPI1497196471
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. KATHRYN LEIGH MAZZACredential: D.O.
Location Address1591 BOSTON POST RD STE 100Guilford, CT 06437-4335
Mailing Address55 Water St, Fl 12New York, NY 10041-0004 · (646) 680-2888
Phone(203) 453-9911
Fax(203) 458-1905
Sole ProprietorYes
Enumeration DateJuly 8, 2013
Last NPPES UpdateAugust 19, 20252 updates tracked since enumeration
NPPES CertifiedAugust 19, 2025
✔ NPI 1497196471 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 079272
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedFamily MedicineTaxonomy 207Q00000X · License 289426 (NY)
1591 BOSTON POST RD STE 100, Guilford, CT 06437
Open in Google Maps ↗

Secondary Practice Location 1

Location 11067 Ogden AveBronx, NY 10452-4601 · Phone (718) 992-7669

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. Kathryn Leigh Mazza D.o. 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 06437 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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 11

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

DR. JEFFREY CARLTON ROESER MD
Internal Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (203) 453-9911
TIMOTHY RAUSCH RN, MSN, FNP
Nurse Practitioner (Family)
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (475) 900-9800
ANTHONY MASCIA MD
Family Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (475) 900-9800
KEVIN M THARAKAN MD
Family Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (203) 932-6481
MONICA M MUNTEANU MD
Internal Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (475) 900-9800
MR. FRANK J ZIMMITTI PAC MS
Physician Assistant
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (203) 932-6481
JOSEPH BALSAMO M.D.
Internal Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (203) 932-6481
JENNIFER B THARAKAN MD
Family Medicine
1591 BOSTON POST RD STE 100
GUILFORD, CT 06437
South Central Connecticut Planning Region (203) 932-6481

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 Kathryn Mazza's NPI number?

The NPI number for Kathryn Mazza is 1497196471. It was assigned to this individual provider in the NPPES registry on July 8, 2013.

Where is Kathryn Mazza located?

Kathryn Mazza practices at 1591 Boston Post Rd Ste 100, Guilford, CT 06437. The listed phone number is (203) 453-9911.

What is Kathryn Mazza's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Kathryn Mazza enrolled in Medicare?

Yes. Kathryn Mazza is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Kathryn Mazza was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.