Doctor profile · Federal record
Dr. Siamak Saadat, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Medical Oncology Physician · Colton, CA
- NPI 1992018642
- Accepts Medicare
- MIPS 91.9 / 100 · 2023
- 18 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
400 N Pepper Ave
Colton, CA 923241801
(909) 580-2775 - Additional location
-
7455 Birkdale Dr
Newark, CA 945601509
(510) 386-9896 - Mailing address
-
Po Box 512185
Los Angeles, CA 900510185
Credentials & registration
- NPI registered
- July 2010 — 16 yrs on file
- Profile last updated
- November 5, 2020
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #A113413
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992018642. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
163
Distinct HCPCS
5
Medicare allowed
$15,191
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 49 | 16 | $121 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 20 | $81 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 30 | 26 | $100 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 27 | 27 | $67 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 11 | 11 | $67 |
In context: peer comparison
Among 1 peers in Colton Hematology & Oncology Physician, average services per provider: 32. This provider delivers 5.1× the peer median.Open Payments
Industry payments received
All-time total
$89,131
Transactions
260
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | 58 | $51,787.00 | |
| Lilly USA, LLC | 20 | $16,921.74 | |
| Pfizer INC. | 39 | $10,486.84 | |
| Sobi, INC | 9 | $4,938.64 | |
| AstraZeneca Pharmaceuticals Lp | 14 | $726.16 | |
| Novartis Pharmaceuticals Corporation | 33 | $553.81 | |
| Merck Sharp & Dohme LLC | 18 | $499.71 | |
| Janssen Biotech, INC. | 12 | $283.58 | |
| Genentech USA, INC. | 10 | $209.12 | |
| Eisai INC. | 8 | $203.34 | |
| Aveo Pharmaceuticals, INC. | 6 | $198.58 | |
| BeiGene USA, INC. | 8 | $194.15 | |
| Astellas Pharma US INC | 12 | $189.28 | |
| Dendreon Pharmaceuticals LLC | 6 | $175.98 | |
| Abbvie INC. | 7 | $153.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
31
Patients
0
Total drug cost
$189,280
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 19 | 0 | $339 |
| Kisqali Femara Co-Pack (Ribociclib Succinate/Letrozole) | Brand | 12 | 0 | $188,942 |
Frequently asked questions
What is Dr. Siamak Saadat's medical specialty?
Dr. Siamak Saadat practices Hematology & Oncology Physician in Colton, CA.
Where does Dr. Siamak Saadat practice?
Dr. Siamak Saadat practices at 400 N Pepper Ave, Colton, CA 923241801. Office phone: 9095802775.
What is Dr. Siamak Saadat's NPI?
Dr. Siamak Saadat's National Provider Identifier (NPI) is 1992018642, issued by NPPES.
Does Dr. Siamak Saadat accept Medicare assignment?
Yes. Dr. Siamak Saadat accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Siamak Saadat commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.