DR. AHMAD ABOU ABBASS M.D
NPI 1790946895
Surgery - Surgical Oncology in Mission Viejo, CA

Q: What is Ahmad Abou Abbass's NPI number?

The NPI number for Ahmad Abou Abbass is 1790946895. It was assigned to this individual provider in the NPPES registry on June 20, 2008.

Q: What is Ahmad Abou Abbass's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

Q: When was this NPI record last updated?

The NPPES record for Ahmad Abou Abbass was last updated on April 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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 June 20, 2008PECOS EnrolledAccepts Medicare Assignment

86.06/100

CMS Quality Rating

26732 CROWN VALLEY PKWY STE 351, MISSION VIEJO, CA 92691(949) 364-1007(949) 364-6057 Get Directions Write a Review

NPPES record last updated: April 9, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 9, 2026, Aug 10, 2018, Aug 2, 2018 (3 updates tracked since 2018).

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About Dr. Ahmad Abou Abbass M.d NPPES

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

DR. AHMAD ABOU ABBASS M.D (NPI 1790946895) is an individual surgical oncology provider in Mission Viejo, California, licensed in California (A152200) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Irvine, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1790946895

Entity TypeIndividualMale

Primary Taxonomy2086X0206X

Provider Legal NameDR. AHMAD ABOU ABBASSCredential: M.D

Location Address26732 CROWN VALLEY PKWY STE 351Mission Viejo, CA 92691

Mailing Address26732 Crown Valley Pkwy Ste 351Mission Viejo, CA 92691-6374 · (949) 364-1007 · Fax (949) 364-6057

Phone(949) 364-1007

Fax(949) 364-6057

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateJune 20, 2008

Last NPPES UpdateApril 9, 20263 updates tracked since enumeration

NPPES CertifiedApril 9, 2026

✔ NPI 1790946895 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Surgical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2086X0206X

License✔ Licensed in CA · A152200

Definition

A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

Also ListedTransplant SurgeryTaxonomy 204F00000X · License 4301091303 (MI)

Also ListedSurgeryTaxonomy 208600000X · License 4301091303 (MI)

26732 CROWN VALLEY PKWY STE 351, Mission Viejo, CA 92691

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Secondary Practice Location 1

Location 11000 Fivepoint Ste AIrvine, CA 92618-2621 · Phone (949) 671-8000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ahmad Abou Abbass M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2466684758

PECOS Enrollment IDI20180511001475

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.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

54 services52 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

48 services29 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

32 services32 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

29 services29 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

29 services27 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

27 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92691 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

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.06/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

80.77

Promoting Interoperability

100

Improvement Activities

Cost

64.07

Reported Quality Measures

Advance Care Plan

3%432 patients1/55-star benchmark: 100%

Closing the Referral Loop: Receipt of Specialist Report

25%93 patients2/55-star benchmark: 87%

Documentation of Current Medications in the Medical Record

72%1,288 patients3/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

29%763 patients2/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

15%1,047 patients2/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 39% · 571 patients

39%571 patients

Provide Patients Electronic Access to Their Health Information

79%457 patients4/55-star benchmark: 100%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 327 patients

Patients totalRate: 0% · 327 patients

0%327 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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Other Providers at the Same Location NPPES 5

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

MR. MATTHEW THOMAS BRADY

Surgery