Doctor profile · Federal record
Dr. Siamak Nabili, M.D.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Irvine, CA
- NPI 1407892490
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
11 Technology Dr
Irvine, CA 926182302
(855) 206-6764
fax (949) 923-3575 - Mailing address
-
Po Box 35380
Las Vegas, NV 891335380
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- August 5, 2025
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A83984
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1407892490. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
255
Distinct HCPCS
5
Medicare allowed
$23,785
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 122 | 54 | $83 | |
99239 |
Hospital discharge day management, more than 30 minutes | 52 | 51 | $121 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 41 | 23 | $52 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 23 | 17 | $125 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 | $137 |
In context: peer comparison
Among 17 peers in Irvine Hospitalist Physician, average services per provider: 151. This provider delivers 1.7× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 1 | $19.83 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
90
Patients
44
Total drug cost
$754
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 19 | 13 | $248 |
| Furosemide | Generic | 19 | 18 | $78 |
| Potassium Chloride | Generic | 15 | 0 | $143 |
| Pantoprazole Sodium | Generic | 14 | 13 | $106 |
| Levothyroxine Sodium | Generic | 12 | 0 | $143 |
| Prednisone | Generic | 11 | 0 | $36 |
Frequently asked questions
What is Dr. Siamak Nabili's medical specialty?
Dr. Siamak Nabili practices Hospitalist Physician in Irvine, CA.
Where does Dr. Siamak Nabili practice?
Dr. Siamak Nabili practices at 11 Technology Dr, Irvine, CA 926182302. Office phone: 8552066764.
What is Dr. Siamak Nabili's NPI?
Dr. Siamak Nabili's National Provider Identifier (NPI) is 1407892490, issued by NPPES.
Does Dr. Siamak Nabili accept Medicare assignment?
Yes. Dr. Siamak Nabili accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Siamak Nabili commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.