Doctor profile · Federal record
Dr. Ahmad Abou Abbass, M.D
Surgical Oncology Physician (CMS: General Surgery) · Transplant Surgery Physician · Surgery Physician · Mission Viejo, CA
- NPI 1790946895
- Accepts Medicare
- MIPS 83.5 / 100 · 2023
- 24 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
26732 Crown Valley Pkwy Ste 351
Mission Viejo, CA 92691
(949) 364-1007
fax (949) 364-6057 - Additional location
-
1000 Fivepoint Ste A
Irvine, CA 926182621
(949) 671-8000
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- April 9, 2026
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 2086X0206X — NUCC code
- State licenses (2)
- California #A152200 · Michigan #4301091303
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790946895. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
388
Distinct HCPCS
10
Medicare allowed
$81,327
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 66 | 65 | $181 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 61 | 45 | $100 | |
47563 |
Removal of gallbladder with x-ray study of bile ducts using an endoscope | 37 | 37 | $764 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 37 | 37 | $80 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 36 | 20 | $82 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 28 | 23 | $127 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 26 | 23 | $196 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 25 | 25 | $123 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 24 | 23 | $141 | |
49650 |
Repair of groin hernia using an endoscope | 22 | 22 | $448 |
In context: peer comparison
Among 1 peers in Mission Viejo Surgical Oncology Physician, average services per provider: 32. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$104,009
Transactions
80
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Intuitive Surgical, INC. | 73 | $103,577.27 | |
| Dilon Technologies, INC. | 1 | $159.09 | |
| Davol INC. | 1 | $112.73 | |
| Medtronic, INC. | 2 | $101.23 | |
| Abbvie INC. | 2 | $33.45 | |
| Becton, Dickinson and Company | 1 | $25.69 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
19
Patients
0
Total drug cost
$11,774
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Creon (Lipase/Protease/Amylase) | Brand | 19 | 0 | $11,774 |
Hospital affiliations
Frequently asked questions
What is Dr. Ahmad Abou Abbass's medical specialty?
Dr. Ahmad Abou Abbass practices Surgical Oncology Physician in Mission Viejo, CA.
Where does Dr. Ahmad Abou Abbass practice?
Dr. Ahmad Abou Abbass practices at 26732 Crown Valley Pkwy Ste 351, Mission Viejo, CA 92691. Office phone: 9493641007.
What is Dr. Ahmad Abou Abbass's NPI?
Dr. Ahmad Abou Abbass's National Provider Identifier (NPI) is 1790946895, issued by NPPES.
Does Dr. Ahmad Abou Abbass accept Medicare assignment?
Yes. Dr. Ahmad Abou Abbass accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ahmad Abou Abbass commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Established patient office or other outpatient visit (HCPCS 99213); Removal of gallbladder with x-ray study of bile ducts using an endoscope (HCPCS 47563). Source: CMS Medicare Physician & Other Practitioners file.