KIRSTIN ANASTASIA, APRN, BC — NPI 1639203979 (Licensed & Credentialed Physician Assistants & Advanced Practice Nursing Providers — Clinical Nurse Specialist, Psychiatric — Mental Health, Child & Adolescent in FAIRFIELD, CT)

CMS-1500 Box 24J / 33a • NPI

1639203979

Type 1 Individual Rendering/Ordering

HIPAA NUCC Taxonomy • CMS Code

364SP0807X (CMS 89)

Licensed & Credentialed Physician Assistants & Advanced Practice Nursing Providers — Clinical Nurse Specialist, Psychiatric — Mental Health, Child & Adolescent

Box 32 Service Location & ZIP+4

1901 POST RD # B, FAIRFIELD, CT, 06824-5721

✓ 9-Digit EDI 837 ZIP+4 (06824-5721)

Practice Phone & Referral Fax

(203) 254-9214

Direct NPPES Verification Line

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1639203979 (KIRSTIN ANASTASIA, APRN, BC) 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

This practitioner does not currently appear in the CMS individual Order & Referring PECOS file (may practice in pediatrics, commercial-only networks, or hospital-employed settings).

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1639203979` (NPI-1 Individual Practitioner)
Provider / Legal Name	KIRSTIN ANASTASIA, APRN, BC
Plain-English Specialty	Licensed & Credentialed Physician Assistants & Advanced Practice Nursing Providers — Clinical Nurse Specialist, Psychiatric — Mental Health, Child & Adolescent NUCC Code: `364SP0807X` (Clinical Nurse Specialist, Psych/Mental Health, Child & Adolescent)
Certifying / Licensing Body	State Medical / Healthcare Licensing Board & National Specialty Board
Practice Location Address	1901 POST RD # B, FAIRFIELD, CT, 06824-5721
Practice Telephone / Fax	Tel: (203) 254-9214
Administrative Mailing Address	245 UNQUOWA RD, FAIRFIELD, CT, 06824-5057
Enumeration & Last Sync	Enumerated: 2007-03-16 \| CMS Record Updated: 2007-07-08

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

1901 POST RD # B, FAIRFIELD, CT, 06824-5721

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Plain-English Taxonomy & CMS Crosswalk (364SP0807X)

What Does Taxonomy Code 364SP0807X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 364SP0807X translates to:
"Licensed & Credentialed Physician Assistants & Advanced Practice Nursing Providers — Clinical Nurse Specialist, Psychiatric — Mental Health, Child & Adolescent"

CMS-1500 Medicare Specialty Crosswalk: CMS Code 89 (Certified Clinical Nurse Specialist)
Certifying / Accrediting Authority: State Medical / Healthcare Licensing Board & National Specialty Board
Clinical Scope: Consult a verified Clinical Nurse Specialist, Psych/Mental Health, Child & Adolescent for specialized diagnostic evaluation, treatment planning, and continuity of care.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (KIRSTIN ANASTASIA, APRN, BC)

Typical CPT / Diagnostic Procedures:

Comprehensive Outpatient & Inpatient Clinical Evaluation (CPT 99202–99215)
Diagnostic Workup, Laboratory Ordering & Evidence-Based Care Coordination
Preventive Screening, Patient Counseling & Multidisciplinary Referral

Common Therapeutic Classes:

Evidence-Based Specialty Pharmacotherapy & Preventive Regimens (CMS Part D Standard)

All Registered NUCC Taxonomies & State Licenses

Taxonomy Code & Plain-English Description	State License & Primary Status
`364SP0807X` — Clinical Nurse Specialist, Psych/Mental Health, Child & Adolescent Plain English: Licensed & Credentialed Physician Assistants & Advanced Practice Nursing Providers — Clinical Nurse Specialist, Psychiatric — Mental Health, Child & Adolescent	State: CT \| License: `003230` \| Primary: Yes (Primary)

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KIRSTIN ANASTASIA, APRN, BC (NPI #1639203979)