AHMAD ABOU ABBASS, M.D — NPI 1790946895 (Licensed & Credentialed Allopathic & Osteopathic Physicians — Surgery

CMS-1500 Box 24J / 33a • NPI

1790946895

Type 1 Individual Rendering/Ordering

HIPAA NUCC Taxonomy • CMS Code

2086X0206X (CMS 02)

Licensed & Credentialed Allopathic & Osteopathic Physicians — Surgery — Surgical Oncology

Box 32 Service Location & ZIP+4

26732 CROWN VALLEY PKWY STE 351, MISSION VIEJO, CA, 92691

Official NPPES Practice Location

Practice Phone & Referral Fax

(949) 364-1007

Fax: (949) 364-6057

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1790946895 (AHMAD ABOU ABBASS, 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).

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1790946895` (NPI-1 Individual Practitioner)
Provider / Legal Name	AHMAD ABOU ABBASS, M.D
Plain-English Specialty	Licensed & Credentialed Allopathic & Osteopathic Physicians — Surgery — Surgical Oncology NUCC Code: `2086X0206X` (Surgery, Surgical Oncology)
Certifying / Licensing Body	State Medical / Healthcare Licensing Board & National Specialty Board
Practice Location Address	26732 CROWN VALLEY PKWY STE 351, MISSION VIEJO, CA, 92691
Practice Telephone / Fax	Tel: (949) 364-1007 \| Fax: (949) 364-6057
Administrative Mailing Address	26732 CROWN VALLEY PKWY STE 351, MISSION VIEJO, CA, 92691-6374
Enumeration & Last Sync	Enumerated: 2008-06-20 \| CMS Record Updated: 2026-04-09

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

26732 CROWN VALLEY PKWY STE 351, MISSION VIEJO, CA, 92691

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Plain-English Taxonomy & CMS Crosswalk (2086X0206X)

What Does Taxonomy Code 2086X0206X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 2086X0206X translates to:
"Licensed & Credentialed Allopathic & Osteopathic Physicians — Surgery — Surgical Oncology"

CMS-1500 Medicare Specialty Crosswalk: CMS Code 02 (Physician/General Surgery) • CMS Code 91 (Physician/Surgical Oncology)
Certifying / Accrediting Authority: State Medical / Healthcare Licensing Board & National Specialty Board
Clinical Scope: Consult a verified Surgery, Surgical Oncology for specialized diagnostic evaluation, treatment planning, and continuity of care.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (AHMAD ABOU ABBASS, 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
`204F00000X` — Transplant Surgery Plain English: Licensed & Credentialed Allopathic & Osteopathic Physicians — Transplant Surgery	State: MI \| License: `4301091303` \| Primary: Secondary
`2086X0206X` — Surgery, Surgical Oncology Plain English: Licensed & Credentialed Allopathic & Osteopathic Physicians — Surgery — Surgical Oncology	State: CA \| License: `A152200` \| Primary: Yes (Primary)
`208600000X` — Surgery Plain English: Board-Certified Orthopedic Surgeon (Bone, Joint, Spine & Sports Injury Surgeon)	State: MI \| License: `4301091303` \| Primary: Secondary

Medical Billing, RCM & Hospital Credentialing Teams:

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AHMAD ABOU ABBASS, M.D (NPI #1790946895)