DR. MERISSA ANN RZONCA MD
NPI 1366775181
Pediatrics in Stony Brook, NY

Q: What is Merissa Rzonca's NPI number?

The NPI number for Merissa Rzonca is 1366775181. It was assigned to this individual provider in the NPPES registry on September 11, 2009.

Q: What is Merissa Rzonca'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 Merissa Rzonca was last updated on July 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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 September 11, 2009PECOS Enrolled

100 NICOLLS RD, STONY BROOK, NY 11794(631) 444-0650 Get Directions Write a Review

NPPES record last updated: July 25, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 25, 2024, Jul 30, 2022 (2 updates tracked since 2022).

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About Dr. Merissa Ann Rzonca Md NPPES

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

DR. MERISSA ANN RZONCA MD (NPI 1366775181) is an individual pediatrics provider in Stony Brook, New York, licensed in New York (255077) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366775181

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. MERISSA ANN RZONCACredential: MD

Location Address100 NICOLLS RDStony Brook, NY 11794-0989

Mailing AddressPo Box 1559Stony Brook, NY 11790-0989

Phone(631) 444-0650

Sole ProprietorNo

Enumeration DateSeptember 11, 2009

Last NPPES UpdateJuly 25, 20242 updates tracked since enumeration

NPPES CertifiedJuly 25, 2024

✔ NPI 1366775181 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in NY · 255077

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.

100 NICOLLS RD, Stony Brook, NY 11794

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Merissa Ann Rzonca 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.

Medicare Billing Reassignment

Medicare enrollment records show Merissa Rzonca reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Stony Brook Children's Service, University Faculty Practice Corporatio

0.3 mi

Pediatrics

SUNY @ STONY BROOK, HSC, L11, RM 020
Stony Brook, NY 11794

Reassigned Medicare billing, New York enrollment
191 clinicians in this Medicare group

NPI 1083660575 (631) 444-1362

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11794 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

$105.06 typical visit price

range $67.40 – $203.53

Typical copayment $26.26 (range $16.85 – $50.88)

Most-billed visit code 99203

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

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 20

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

MALWINA WLOCH M.D.

Anesthesiology

100 NICOLLS RD, SUNY AT STONY BROOK - DEPARTMENT OF ANESTHESIOLOGY
STONY BROOK, NY 11794

Suffolk County (631) 444-2968

CHABIDOU SAMPAIN FNP

Psychiatry & Neurology (Geriatric Psychiatry)