Doctor profile · Federal record
Dr. Siamak Tabib, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Los Angeles, CA
- NPI 1063555845
- Accepts Medicare
- MIPS 6.9 / 100 · 2023
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
8631 W 3Rd St, Suite 1015E
Los Angeles, CA 900485901
(310) 652-4472
fax (310) 358-2266
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- December 27, 2012
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A66169
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1063555845. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
985
Distinct HCPCS
9
Medicare allowed
$136,474
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 550 | 231 | $139 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 112 | 109 | $52 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 79 | 76 | $75 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 77 | 77 | $180 | |
45388 |
Destruction of polyp or growth of large bowel using a flexible endoscope | 67 | 65 | $282 | |
43270 |
Destruction of polyp or growth of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 51 | 51 | $179 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 21 | 15 | $194 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 16 | 16 | $144 | |
45381 |
Injection beneath lining of large bowel using a flexible endoscope | 12 | 12 | $17 |
In context: peer comparison
Among 52 peers in Los Angeles Gastroenterology Physician, average services per provider: 124. This provider delivers 7.9× the peer median.Open Payments
Industry payments received
All-time total
$1,050
Transactions
46
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 17 | $258.45 | |
| Aimmune Therapeutics, INC. | 5 | $135.56 | |
| Lilly USA, LLC | 1 | $119.36 | |
| Novartis Pharmaceuticals Corporation | 3 | $77.80 | |
| Janssen Biotech, INC. | 3 | $70.33 | |
| Abbvie INC. | 3 | $62.89 | |
| Merck Sharp & Dohme LLC | 2 | $55.22 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 3 | $47.22 | |
| Qol Medical, LLC | 2 | $46.55 | |
| Edwards Lifesciences Corporation | 1 | $40.50 | |
| Mirum Pharmaceuticals, INC. | 2 | $36.85 | |
| Madrigal Pharmaceuticals | 1 | $26.33 | |
| Regeneron Healthcare Solutions, INC. | 1 | $25.77 | |
| Ironwood Pharmaceuticals, INC | 1 | $24.81 | |
| Alnylam Pharmaceuticals INC. | 1 | $22.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
515
Patients
182
Total drug cost
$190,792
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 109 | 36 | $3,254 |
| Omeprazole | Generic | 86 | 24 | $1,144 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 76 | 70 | $6,333 |
| Pantoprazole Sodium | Generic | 58 | 20 | $1,291 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 43 | 11 | $16,905 |
| Mesalamine | Generic | 38 | 0 | $40,746 |
| Creon (Lipase/Protease/Amylase) | Brand | 29 | 0 | $104,290 |
| Suprep (Sodium, Potassium,Mag Sulfates) | Brand | 23 | 21 | $2,696 |
| Lansoprazole | Generic | 15 | 0 | $668 |
| Ursodiol | Generic | 15 | 0 | $4,827 |
Hospital affiliations
Frequently asked questions
What is Dr. Siamak Tabib's medical specialty?
Dr. Siamak Tabib practices Gastroenterology Physician in Los Angeles, CA.
Where does Dr. Siamak Tabib practice?
Dr. Siamak Tabib practices at 8631 W 3Rd St, Los Angeles, CA 900485901. Office phone: 3106524472.
What is Dr. Siamak Tabib's NPI?
Dr. Siamak Tabib's National Provider Identifier (NPI) is 1063555845, issued by NPPES.
Does Dr. Siamak Tabib accept Medicare assignment?
Yes. Dr. Siamak Tabib accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Siamak Tabib commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.