A. BYRNE, DMD, J. ZERELLA, DMD, MDS, LLC — NPI 1518040641 (Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD) in FAIRFIELD, CT)

CMS-1500 Box 24J / 33a • NPI

1518040641

Type 2 Organization (Box 32a/33a)

HIPAA NUCC Taxonomy • CMS Code

1223E0200X

Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD)

Box 32 Service Location & ZIP+4

1275 POST RD, SUITE 217, FAIRFIELD, CT, 06824-6015

✓ 9-Digit EDI 837 ZIP+4 (06824-6015)

Practice Phone & Referral Fax

(203) 259-3399

Fax: (203) 254-7998

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1518040641 (A. BYRNE, DMD, J. ZERELLA, DMD, MDS, LLC) has 0 active federal exclusions across all 84,224 HHS OIG LEIE sanction records (Database Verified: 2026-11-11).

CMS Medicare Order & Referring PECOS Eligibility

Institutional Type-2 NPI facilities enroll via CMS-855A institutional provider agreements rather than individual Order & Referring PECOS.

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1518040641` (NPI-2 Organization / Facility)
Provider / Legal Name	A. BYRNE, DMD, J. ZERELLA, DMD, MDS, LLC
Plain-English Specialty	Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD) NUCC Code: `1223E0200X` (Dentist, Endodontics)
Certifying / Licensing Body	American Dental Association (ADA) / State Board of Dental Examiners
Practice Location Address	1275 POST RD, SUITE 217, FAIRFIELD, CT, 06824-6015
Practice Telephone / Fax	Tel: (203) 259-3399 \| Fax: (203) 254-7998
Administrative Mailing Address	1275 POST RD, FAIRFIELD, CT, 06824-6015
Enumeration & Last Sync	Enumerated: 2006-10-23 \| CMS Record Updated: 2020-08-22
Authorized Official	JOSEPH ZERELLA (Owner/Partner)

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

1275 POST RD, SUITE 217, FAIRFIELD, CT, 06824-6015

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Plain-English Taxonomy & CMS Crosswalk (1223E0200X)

What Does Taxonomy Code 1223E0200X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 1223E0200X translates to:
"Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD)"

CMS-1500 Medicare Specialty Crosswalk: Standard HIPAA X12N 837P / CMS-1500
Certifying / Accrediting Authority: American Dental Association (ADA) / State Board of Dental Examiners
Clinical Scope: Routine 6-month dental checkups, toothache, dental abscess, bleeding gums (periodontitis), or wisdom tooth extraction.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (A. BYRNE, DMD, J. ZERELLA, DMD, MDS, LLC)

Typical CPT / Diagnostic Procedures:

Comprehensive Oral Evaluation, Digital Dental Radiographs & Prophylaxis
Restorative Composite Fillings, Crowns, Endodontic Root Canal & Extractions

Common Therapeutic Classes:

Amoxicillin, Metronidazole & Clindamycin (Odontogenic Infections)
Chlorhexidine Gluconate 0.12% Oral Rinse & High-Fluoride Varnish

All Registered NUCC Taxonomies & State Licenses

Taxonomy Code & Plain-English Description	State License & Primary Status
`1223E0200X` — Dentist, Endodontics Plain English: Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD)	State: CT \| License: `008617` \| Primary: Secondary
`1223E0200X` — Dentist, Endodontics Plain English: Licensed Doctor of Dental Surgery (DDS) / Doctor of Medicine in Dentistry (DMD)	State: CT \| License: `008866` \| Primary: Yes (Primary)

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A. BYRNE, DMD, J. ZERELLA, DMD, MDS, LLC (NPI #1518040641)