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

DR. JOHN L GUARIGLIA DDS
NPI 1891779278
Dentist - Oral and Maxillofacial Surgery in Brentwood, NY

Q: What is John Guariglia's NPI number?

The NPI number for John Guariglia is 1891779278. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Q: What is John Guariglia's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

Q: When was this NPI record last updated?

The NPPES record for John Guariglia 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 33 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 November 30, 2005PECOS Enrolled

601 SUFFOLK AVENUE, STE 2, BRENTWOOD, NY 11717(631) 273-4888(631) 273-4042 Get Directions Write a Review

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

On this page

About Dr. John L Guariglia Dds NPPES

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

DR. JOHN L GUARIGLIA DDS (NPI 1891779278) is an individual oral and maxillofacial surgery provider in Brentwood, New York, licensed in New York (042338) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891779278

Entity TypeIndividualMale

Primary Taxonomy1223S0112X

Provider Legal NameDR. JOHN L GUARIGLIACredential: DDS

Location Address601 SUFFOLK AVENUE, STE 2Brentwood, NY 11717

Mailing Address1 Galloway CourtEast Setauket, NY 11733 · (631) 751-6495

Phone(631) 273-4888

Fax(631) 273-4042

Sole ProprietorNo

Enumeration DateNovember 30, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1891779278 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers

Taxonomy Code1223S0112X

License✔ Licensed in NY · 042338

Definition

An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.

601 SUFFOLK AVENUE, Brentwood, NY 11717

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.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. John L Guariglia Dds 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 11717 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

$83.44 typical visit price

range $21.66 – $164.45

Typical copayment $20.86 (range $5.41 – $41.11)

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

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

BRENTWOOD VISION CENTER INC

Optometrist

601 SUFFOLK AVENUE, SUITE 1
BRENTWOOD, NY 11717

Suffolk County (631) 273-3335

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 John Guariglia's NPI number?

The NPI number for John Guariglia is 1891779278. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Where is John Guariglia located?

John Guariglia practices at 601 Suffolk Avenue Ste 2, Brentwood, NY 11717. The listed phone number is (631) 273-4888.

What is John Guariglia's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

Is John Guariglia enrolled in Medicare?

Yes. John Guariglia is registered in the Medicare PECOS enrollment system.

What insurance does John Guariglia accept?

Health plans from BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Florida Combined Life and 4 other insurers list John Guariglia as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Guariglia 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 33 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.