MARRIAM AALAI, M.D. — NPI 1487003984 (Licensed & Credentialed Allopathic & Osteopathic Physicians

CMS-1500 Box 24J / 33a • NPI

1487003984

Type 1 Individual Rendering/Ordering

HIPAA NUCC Taxonomy • CMS Code

207ZC0500X (CMS 22)

Licensed & Credentialed Allopathic & Osteopathic Physicians — Pathology, Cytopathology

Box 32 Service Location & ZIP+4

3600 JOSEPH SIEWICK DR, FAIRFAX, VA, 22033-1709

✓ 9-Digit EDI 837 ZIP+4 (22033-1709)

Practice Phone & Referral Fax

(703) 391-3600

Fax: (703) 391-3414

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1487003984 (MARRIAM AALAI, M.D.) 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).

Empirical CMS Medicare Claims, CPT Utilization & Part D Prescribing (NPI #1487003984)

Medicare Beneficiaries

407

Total Billed Services

1,732

Distinct CPT/HCPCS Codes

Medicare Allowed Total

$66,496.15

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1487003984` (NPI-1 Individual Practitioner)
Provider / Legal Name	MARRIAM AALAI, M.D.
Plain-English Specialty	Licensed & Credentialed Allopathic & Osteopathic Physicians — Pathology, Cytopathology NUCC Code: `207ZC0500X` (Pathology, Cytopathology)
Certifying / Licensing Body	State Medical / Healthcare Licensing Board & National Specialty Board
Practice Location Address	3600 JOSEPH SIEWICK DR, FAIRFAX, VA, 22033-1709
Practice Telephone / Fax	Tel: (703) 391-3600 \| Fax: (703) 391-3414
Administrative Mailing Address	3600 JOSEPH SIEWICK DR, FAIRFAX, VA, 22033-1709
Enumeration & Last Sync	Enumerated: 2016-06-07 \| CMS Record Updated: 2022-12-10

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

3600 JOSEPH SIEWICK DR, FAIRFAX, VA, 22033-1709

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Plain-English Taxonomy & CMS Crosswalk (207ZC0500X)

What Does Taxonomy Code 207ZC0500X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207ZC0500X translates to:
"Licensed & Credentialed Allopathic & Osteopathic Physicians — Pathology, Cytopathology"

CMS-1500 Medicare Specialty Crosswalk: CMS Code 22 (Physician/Pathology)
Certifying / Accrediting Authority: State Medical / Healthcare Licensing Board & National Specialty Board
Clinical Scope: Consult a verified Pathology, Cytopathology for specialized diagnostic evaluation, treatment planning, and continuity of care.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (MARRIAM AALAI, M.D.)

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
`207ZC0500X` — Pathology, Cytopathology Plain English: Licensed & Credentialed Allopathic & Osteopathic Physicians — Pathology, Cytopathology	State: VA \| License: `0101274321` \| Primary: Yes (Primary)

Medical Billing, RCM & Hospital Credentialing Teams:

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MARRIAM AALAI, M.D. (NPI #1487003984)